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	<id>https://energyeducation.ca/wiki/index.php?action=history&amp;feed=atom&amp;title=Window_frame</id>
	<title>Window frame - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://energyeducation.ca/wiki/index.php?action=history&amp;feed=atom&amp;title=Window_frame"/>
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	<updated>2026-04-04T16:53:32Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=6721&amp;oldid=prev</id>
		<title>Jmdonev: 1 revision imported: Doing upload, largely of old redirects.</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=6721&amp;oldid=prev"/>
		<updated>2018-06-04T16:52:22Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported: Doing upload, largely of old redirects.&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 16:52, 4 June 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
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		<author><name>Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=6720&amp;oldid=prev</id>
		<title>Jmdonev at 17:18, 1 June 2018</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=6720&amp;oldid=prev"/>
		<updated>2018-06-01T17:18:31Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 17:18, 1 June 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2015&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;04&lt;/del&gt;-01]]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Done &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2018&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;06&lt;/ins&gt;-01]]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:345px-Vinyl_window_frame_0800.jpg|400px|framed|right|Figure 1. A cross section of a vinyl window frame with two panes of glass.&amp;lt;ref&amp;gt;&amp;quot;Vinyl window frame 0800&amp;quot; Own work. Licensed under CC BY-SA 4.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Vinyl_window_frame_0800.JPG#/media/File:Vinyl_window_frame_0800.JPG&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:345px-Vinyl_window_frame_0800.jpg|400px|framed|right|Figure 1. A cross section of a vinyl window frame with two panes of glass.&amp;lt;ref&amp;gt;&amp;quot;Vinyl window frame 0800&amp;quot; Own work. Licensed under CC BY-SA 4.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Vinyl_window_frame_0800.JPG#/media/File:Vinyl_window_frame_0800.JPG&amp;lt;/ref&amp;gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;The &#039;&#039;&#039;window frame&#039;&#039;&#039; is the portion of the [[window]] that holds the [[glazing]] and sits between the glazing and the wall of the [[building envelope|building]] when installed. The frame can be fairly simple in a non-operable window to very complex with numerous moving parts in an operable, multi-pane window.&amp;lt;/onlyinclude&amp;gt; Overall, the main function of a frame is to hold the panes of the window in &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;place - with &lt;/del&gt;the aid of [[spacers]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;- and &lt;/del&gt;hold the window into the wall of a building.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;onlyinclude&amp;gt;The &#039;&#039;&#039;window frame&#039;&#039;&#039; is the portion of the [[window]] that holds the [[glazing]] and sits between the glazing and the wall of the [[building envelope|building]] when installed. The frame can be fairly simple in a non-operable window to very complex with numerous moving parts in an operable, multi-pane window.&amp;lt;/onlyinclude&amp;gt; Overall, the main function of a frame is to hold the panes of the window in &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;place—with &lt;/ins&gt;the aid of [[spacers]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;—and &lt;/ins&gt;hold the window into the wall of a building.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Taking into account the frame as well as the glazing when choosing a window is vitally important in ensuring that the [[energy]] efficiency of the window is suitable. Looking at the [[U-value]]s of windows along with their frames can provide a more complete idea of how well a window will [[insulation|insulate]].&amp;lt;ref name=&quot;RE2&quot;&amp;gt;Energy.Gov. (April 28, 2015). &#039;&#039;Window Types&#039;&#039; [Online]. Available: http://energy.gov/energysaver/articles/window-types&amp;lt;/ref&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;As well&lt;/del&gt;, the choice of the right window frame, especially a modern window frame, can cut air infiltration in a home down to nearly zero by covering cracks and creating a good seal. This can cut up to 40% off of [[home temperature control|heating and cooling]] bills.&amp;lt;ref name=&quot;RE3&quot;&amp;gt;Fran J. Donegan. (April 28, 2015). &#039;&#039;Clear Choices for Windows&#039;&#039; [Online]. Available: http://www.thisoldhouse.com/toh/article/0,,332482,00.html&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Taking into account the frame as well as the glazing when choosing a window is vitally important in ensuring that the [[energy]] efficiency of the window is suitable. Looking at the [[U-value]]s of windows along with their frames can provide a more complete idea of how well a window will [[insulation|insulate]].&amp;lt;ref name=&quot;RE2&quot;&amp;gt;Energy.Gov. (April 28, 2015). &#039;&#039;Window Types&#039;&#039; [Online]. Available: http://energy.gov/energysaver/articles/window-types&amp;lt;/ref&amp;gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;In addition&lt;/ins&gt;, the choice of the right window frame, especially a modern window frame, can cut air infiltration in a home down to nearly zero by covering cracks and creating a good seal. This can cut up to 40% off of [[home temperature control|heating and cooling]] bills.&amp;lt;ref name=&quot;RE3&quot;&amp;gt;Fran J. Donegan. (April 28, 2015). &#039;&#039;Clear Choices for Windows&#039;&#039; [Online]. Available: http://www.thisoldhouse.com/toh/article/0,,332482,00.html&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Window frames can be made out of a wide variety of materials, and can be made solely out of one material or a composite of numerous materials. The most common frame types are wood, vinyl, aluminum, and more recently fiberglass frames. Composite frames include vinyl or aluminum clad wood products, wood clad vinyl products and other combinations to meet a variety of demands.&amp;lt;ref name=&quot;RE4&quot;&amp;gt;Window &amp;amp; Door. (April 28, 2015). &#039;&#039;Material Choices&#039;&#039; [Online]. Available: http://windowanddoor.com/article/consumer-info/material-choices-windows-doors&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Window frames can be made out of a wide variety of materials, and can be made solely out of one material or a composite of numerous materials. The most common frame types are &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;wood&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;, vinyl, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;aluminum&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;, and more recently fiberglass frames. Composite frames include vinyl or aluminum clad wood products, wood clad vinyl products and other combinations to meet a variety of demands.&amp;lt;ref name=&quot;RE4&quot;&amp;gt;Window &amp;amp; Door. (April 28, 2015). &#039;&#039;Material Choices&#039;&#039; [Online]. Available: http://windowanddoor.com/article/consumer-info/material-choices-windows-doors&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Building Materials==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Building Materials==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Modern window frames can be made &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;of &lt;/del&gt;a variety of materials, each with their own benefits and drawbacks. The four main materials used in building window frames are:&amp;lt;ref name=&quot;RE1&quot;&amp;gt;Milgard Windows &amp;amp; Doors. (April 28, 2015). &#039;&#039;Window Frame Materials&#039;&#039; [Online]. Available: http://www.milgard.com/materials&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Modern window frames can be made &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;from &lt;/ins&gt;a variety of materials, each with their own benefits and drawbacks. The four main materials used in building window frames are:&amp;lt;ref name=&quot;RE1&quot;&amp;gt;Milgard Windows &amp;amp; Doors. (April 28, 2015). &#039;&#039;Window Frame Materials&#039;&#039; [Online]. Available: http://www.milgard.com/materials&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &#039;&#039;&#039;Wood&#039;&#039;&#039;: Wood frames have been used extensively in window frame construction for their warm look, insulating properties, and the ability to paint them to refresh how the frames look. Wood frames are the most common choice for frames as they can be &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pained &lt;/del&gt;a solid colour or stained and sealed. However, compared to vinyl and fiberglass frames, wood frames require more maintenance including regular sealing, staining, and painting. Although affordable, they may not provide the highest levels of insulation and are prone to cracking, in turn letting untreated air and water into the home.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &#039;&#039;&#039;Wood&#039;&#039;&#039;: Wood frames have been used extensively in window frame construction for their warm look, insulating properties, and the ability to paint them to refresh how the frames look. Wood frames are the most common choice for frames as they can be &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;painted &lt;/ins&gt;a solid colour or stained and sealed. However, compared to vinyl and fiberglass frames, wood frames require more maintenance including regular sealing, staining, and painting. Although affordable, they may not provide the highest levels of insulation and are prone to cracking, in turn letting untreated air and water into the home.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;Fiberglass&amp;#039;&amp;#039;&amp;#039;: Fiberglass window frames are beneficial as they are extremely strong, low maintenance, look traditional, and are paintable window frame options. These frames are composed of glass fibers and resin, and are very well suited for [[environment]]s with drastically changing [[temperature]]s as the frames are resistant to expansion and contraction due to [[weather]] changes. These frames are desirable as they replicate the look and feel of wood without swelling, rotting, or warping and they are more [[energy efficient building design|energy efficient]] than wood frames. However, fiberglass frames are significantly more expensive than wooden frames.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;Fiberglass&amp;#039;&amp;#039;&amp;#039;: Fiberglass window frames are beneficial as they are extremely strong, low maintenance, look traditional, and are paintable window frame options. These frames are composed of glass fibers and resin, and are very well suited for [[environment]]s with drastically changing [[temperature]]s as the frames are resistant to expansion and contraction due to [[weather]] changes. These frames are desirable as they replicate the look and feel of wood without swelling, rotting, or warping and they are more [[energy efficient building design|energy efficient]] than wood frames. However, fiberglass frames are significantly more expensive than wooden frames.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &#039;&#039;&#039;Vinyl&#039;&#039;&#039;: Vinyl frames are a newer type of frame, made primarily of polyvinyl chloride or PVC. These frames are durable, extremely energy efficient, not susceptible to corrosion, and are essentially maintenance-free. Different vinyl composites &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;can be used &lt;/del&gt;that contain different additives to give the frame different qualities. The addition of titanium dioxide makes the vinyl frames more [[heat]] resistant, for example. Vinyl frames are the least expensive of all material options, but their lack of maintenance and good insulating qualities also make vinyl frames an appealing option.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &#039;&#039;&#039;Vinyl&#039;&#039;&#039;: Vinyl frames are a newer type of frame, made primarily of polyvinyl chloride or PVC. These frames are durable, extremely energy efficient, not susceptible to corrosion, and are essentially maintenance-free. Different vinyl composites that contain different additives &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;can be used &lt;/ins&gt;to give the frame different qualities. The addition of titanium dioxide makes the vinyl frames more [[heat]] resistant, for example. Vinyl frames are the least expensive of all material options, but their lack of maintenance and good insulating qualities also make vinyl frames an appealing option.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &#039;&#039;&#039;Aluminum&#039;&#039;&#039;: Aluminum window frames are valued for their slim profile but durability, along with their low maintenance and strength. Due to their lightweight construction and strength, aluminum window frames are able to be configured in a variety of ways. This makes them beneficial for multi-panel systems or large windows. However, aluminum frames are not recommended in wet areas or areas that have high levels of salty water and air due to their corrosion. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;As well&lt;/del&gt;, the welded joints can weaken over time, resulting in cracking and breaking. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;As well&lt;/del&gt;, compared to vinyl, fiberglass, and wood frames aluminum frames are the least energy efficient as they conduct heat well. To reduce this, some companies have equipped aluminum frames with thermal breaks that separate the interior and exterior surfaces of the frame to reduce [[heat transfer]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &#039;&#039;&#039;Aluminum&#039;&#039;&#039;: Aluminum window frames are valued for their slim profile but durability, along with their low maintenance and strength. Due to their lightweight construction and strength, aluminum window frames are able to be configured in a variety of ways. This makes them beneficial for multi-panel systems or large windows. However, aluminum frames are not recommended in wet areas or areas that have high levels of salty water and air due to their corrosion. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;In addition&lt;/ins&gt;, the welded joints can weaken over time, resulting in cracking and breaking. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;However&lt;/ins&gt;, compared to vinyl, fiberglass, and wood frames aluminum frames are the least energy efficient as they conduct heat well. To reduce this, some companies have equipped aluminum frames with thermal breaks that separate the interior and exterior surfaces of the frame to reduce [[heat transfer]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;Clad&amp;quot; frames are also a type of composite frame that are available. These frames consist of a vinyl or aluminum exterior and a wooden interior. These frames are more durable and require less maintenance, but are significantly more expensive than other frames.&amp;lt;ref&amp;gt;Patricia Cecil-Reed. (April 28, 2015). &amp;#039;&amp;#039;Common Window Frame Materials&amp;#039;&amp;#039; [Online]. Available: http://www.oldhouseweb.com/how-to-advice/framing-the-debate-what-materials-are-best-for-window-frames.shtml&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;quot;Clad&amp;quot; frames are also a type of composite frame that are available. These frames consist of a vinyl or aluminum exterior and a wooden interior. These frames are more durable and require less maintenance, but are significantly more expensive than other frames.&amp;lt;ref&amp;gt;Patricia Cecil-Reed. (April 28, 2015). &amp;#039;&amp;#039;Common Window Frame Materials&amp;#039;&amp;#039; [Online]. Available: http://www.oldhouseweb.com/how-to-advice/framing-the-debate-what-materials-are-best-for-window-frames.shtml&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==For Further Reading==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Window]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Energy efficient building design]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Insulation]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[R-value]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[[Door]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*Or explore a [[Special:Random| random page]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==References==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==References==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{reflist}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{reflist}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Uploaded]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Uploaded]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Jmdonev</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=1972&amp;oldid=prev</id>
		<title>J.williams: 1 revision imported</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=1972&amp;oldid=prev"/>
		<updated>2015-08-26T21:31:49Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:31, 26 August 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>J.williams</name></author>
	</entry>
	<entry>
		<id>https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=1971&amp;oldid=prev</id>
		<title>J.williams at 17:00, 12 August 2015</title>
		<link rel="alternate" type="text/html" href="https://energyeducation.ca/wiki/index.php?title=Window_frame&amp;diff=1971&amp;oldid=prev"/>
		<updated>2015-08-12T17:00:35Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Category:Done 2015-04-01]] &lt;br /&gt;
[[File:345px-Vinyl_window_frame_0800.jpg|400px|framed|right|Figure 1. A cross section of a vinyl window frame with two panes of glass.&amp;lt;ref&amp;gt;&amp;quot;Vinyl window frame 0800&amp;quot; Own work. Licensed under CC BY-SA 4.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Vinyl_window_frame_0800.JPG#/media/File:Vinyl_window_frame_0800.JPG&amp;lt;/ref&amp;gt;]]&lt;br /&gt;
&lt;br /&gt;
&amp;lt;onlyinclude&amp;gt;The &amp;#039;&amp;#039;&amp;#039;window frame&amp;#039;&amp;#039;&amp;#039; is the portion of the [[window]] that holds the [[glazing]] and sits between the glazing and the wall of the [[building envelope|building]] when installed. The frame can be fairly simple in a non-operable window to very complex with numerous moving parts in an operable, multi-pane window.&amp;lt;/onlyinclude&amp;gt; Overall, the main function of a frame is to hold the panes of the window in place - with the aid of [[spacers]] - and hold the window into the wall of a building. &lt;br /&gt;
&lt;br /&gt;
Taking into account the frame as well as the glazing when choosing a window is vitally important in ensuring that the [[energy]] efficiency of the window is suitable. Looking at the [[U-value]]s of windows along with their frames can provide a more complete idea of how well a window will [[insulation|insulate]].&amp;lt;ref name=&amp;quot;RE2&amp;quot;&amp;gt;Energy.Gov. (April 28, 2015). &amp;#039;&amp;#039;Window Types&amp;#039;&amp;#039; [Online]. Available: http://energy.gov/energysaver/articles/window-types&amp;lt;/ref&amp;gt; As well, the choice of the right window frame, especially a modern window frame, can cut air infiltration in a home down to nearly zero by covering cracks and creating a good seal. This can cut up to 40% off of [[home temperature control|heating and cooling]] bills.&amp;lt;ref name=&amp;quot;RE3&amp;quot;&amp;gt;Fran J. Donegan. (April 28, 2015). &amp;#039;&amp;#039;Clear Choices for Windows&amp;#039;&amp;#039; [Online]. Available: http://www.thisoldhouse.com/toh/article/0,,332482,00.html&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Window frames can be made out of a wide variety of materials, and can be made solely out of one material or a composite of numerous materials. The most common frame types are wood, vinyl, aluminum, and more recently fiberglass frames. Composite frames include vinyl or aluminum clad wood products, wood clad vinyl products and other combinations to meet a variety of demands.&amp;lt;ref name=&amp;quot;RE4&amp;quot;&amp;gt;Window &amp;amp; Door. (April 28, 2015). &amp;#039;&amp;#039;Material Choices&amp;#039;&amp;#039; [Online]. Available: http://windowanddoor.com/article/consumer-info/material-choices-windows-doors&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Building Materials==&lt;br /&gt;
Modern window frames can be made of a variety of materials, each with their own benefits and drawbacks. The four main materials used in building window frames are:&amp;lt;ref name=&amp;quot;RE1&amp;quot;&amp;gt;Milgard Windows &amp;amp; Doors. (April 28, 2015). &amp;#039;&amp;#039;Window Frame Materials&amp;#039;&amp;#039; [Online]. Available: http://www.milgard.com/materials&amp;lt;/ref&amp;gt;&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Wood&amp;#039;&amp;#039;&amp;#039;: Wood frames have been used extensively in window frame construction for their warm look, insulating properties, and the ability to paint them to refresh how the frames look. Wood frames are the most common choice for frames as they can be pained a solid colour or stained and sealed. However, compared to vinyl and fiberglass frames, wood frames require more maintenance including regular sealing, staining, and painting. Although affordable, they may not provide the highest levels of insulation and are prone to cracking, in turn letting untreated air and water into the home.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Fiberglass&amp;#039;&amp;#039;&amp;#039;: Fiberglass window frames are beneficial as they are extremely strong, low maintenance, look traditional, and are paintable window frame options. These frames are composed of glass fibers and resin, and are very well suited for [[environment]]s with drastically changing [[temperature]]s as the frames are resistant to expansion and contraction due to [[weather]] changes. These frames are desirable as they replicate the look and feel of wood without swelling, rotting, or warping and they are more [[energy efficient building design|energy efficient]] than wood frames. However, fiberglass frames are significantly more expensive than wooden frames.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Vinyl&amp;#039;&amp;#039;&amp;#039;: Vinyl frames are a newer type of frame, made primarily of polyvinyl chloride or PVC. These frames are durable, extremely energy efficient, not susceptible to corrosion, and are essentially maintenance-free. Different vinyl composites can be used that contain different additives to give the frame different qualities. The addition of titanium dioxide makes the vinyl frames more [[heat]] resistant, for example. Vinyl frames are the least expensive of all material options, but their lack of maintenance and good insulating qualities also make vinyl frames an appealing option.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Aluminum&amp;#039;&amp;#039;&amp;#039;: Aluminum window frames are valued for their slim profile but durability, along with their low maintenance and strength. Due to their lightweight construction and strength, aluminum window frames are able to be configured in a variety of ways. This makes them beneficial for multi-panel systems or large windows. However, aluminum frames are not recommended in wet areas or areas that have high levels of salty water and air due to their corrosion. As well, the welded joints can weaken over time, resulting in cracking and breaking. As well, compared to vinyl, fiberglass, and wood frames aluminum frames are the least energy efficient as they conduct heat well. To reduce this, some companies have equipped aluminum frames with thermal breaks that separate the interior and exterior surfaces of the frame to reduce [[heat transfer]].&lt;br /&gt;
&amp;quot;Clad&amp;quot; frames are also a type of composite frame that are available. These frames consist of a vinyl or aluminum exterior and a wooden interior. These frames are more durable and require less maintenance, but are significantly more expensive than other frames.&amp;lt;ref&amp;gt;Patricia Cecil-Reed. (April 28, 2015). &amp;#039;&amp;#039;Common Window Frame Materials&amp;#039;&amp;#039; [Online]. Available: http://www.oldhouseweb.com/how-to-advice/framing-the-debate-what-materials-are-best-for-window-frames.shtml&amp;lt;/ref&amp;gt;&lt;br /&gt;
==References==&lt;br /&gt;
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		<author><name>J.williams</name></author>
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