{"id":4427,"date":"2017-09-30T21:04:04","date_gmt":"2017-10-01T02:04:04","guid":{"rendered":"https:\/\/www.summet.com\/blog\/?p=4427"},"modified":"2017-12-26T08:21:54","modified_gmt":"2017-12-26T13:21:54","slug":"garage-insulation-part-2-reflectix-radiant-heat-barrier","status":"publish","type":"post","link":"https:\/\/www.summet.com\/blog\/2017\/09\/30\/garage-insulation-part-2-reflectix-radiant-heat-barrier\/","title":{"rendered":"Garage Door Insulation \u2014 Part 2 (Reflectix  radiant heat barrier)"},"content":{"rendered":"<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/QkxGTHtozWk?rel=0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>After installing the <a href=\"https:\/\/www.summet.com\/blog\/2017\/09\/30\/garage-insulation-part-1-fiberglass-door-insulation\/\">R-8 fiberglass batt with white vinyl backing<\/a>, my garage doors were relatively well insulated, but I decided to add a layer of reflectix as a radiant heat barrier.<\/p>\n<p><a href=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_090345.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-4417\" src=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_090345-1024x768.jpg\" alt=\"\" width=\"584\" height=\"438\" srcset=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_090345-1024x768.jpg 1024w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_090345-300x225.jpg 300w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_090345-768x576.jpg 768w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_090345-400x300.jpg 400w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>In this situation, with one side facing the open air of the garage, it adds about a 3 to the R factor. I also like the aesthetics of the silver bubblewrap more than the white puffy vinyl.<\/p>\n<p>Unfortunately, unlike the Dow Corning fiberglass batt which is designed for garage doors and comes pre-cut at the factory to the correct height, I had to measure and cut the reflectix down from a 24 inch roll.<\/p>\n<p><a href=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_205558.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-4428\" src=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_205558-1024x768.jpg\" alt=\"\" width=\"584\" height=\"438\" srcset=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_205558-1024x768.jpg 1024w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_205558-300x225.jpg 300w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_205558-768x576.jpg 768w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170811_205558-400x300.jpg 400w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>If you don&#8217;t have support bars, it&#8217;s relatively easy to install. Just make a few cuts to go around the upright bars and tuck the top and bottom inside the lips of the door panels. I was going to move the white plastic clips that hold the fiberglass in to outside the reflectix, but so far, a pure friction fit is holding it just fine.<\/p>\n<p>The panels with support bars require more work. I guess it would be possible to remove the support bars and then re-install them on top of the reflectix, but I chose to measure and mark each bar location by cutting the edge of the reflectix, then taking it down and cutting the proper length. I installed the reflectix panel under the horizontal support bar, and made sure that the top lined up just under the height of the panel. Then I notched around the vertical bars so that I could get the top in place.<\/p>\n<p>So far, they all stay in place with nothing more than a friction fit. The bottom panels that don&#8217;t have a horizontal support bar holding the reflectix bow the most when overhead and may pose a problem as they age, but if I run into issues, I&#8217;ll just take the plastic clips that hold the fiberglass on and move them to the outside of the reflectix to help hold it in place as well.<\/p>\n<p><a href=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170930_220118.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-4429\" src=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170930_220118-1024x768.jpg\" alt=\"\" width=\"584\" height=\"438\" srcset=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170930_220118-1024x768.jpg 1024w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170930_220118-300x225.jpg 300w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170930_220118-768x576.jpg 768w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2017\/09\/IMG_20170930_220118-400x300.jpg 400w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>Next, I&#8217;m going to cut <a href=\"https:\/\/www.summet.com\/blog\/2017\/12\/26\/garage-door-insulation-part-3-window-openings\/\">aluminum faced polyiso foam insulation<\/a> for the spaces around the windows in the top panels.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>After installing the R-8 fiberglass batt with white vinyl backing, my garage doors were relatively well insulated, but I decided to add a layer of reflectix as a radiant heat barrier. In this situation, with one side facing the open &hellip; <a href=\"https:\/\/www.summet.com\/blog\/2017\/09\/30\/garage-insulation-part-2-reflectix-radiant-heat-barrier\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[125],"class_list":["post-4427","post","type-post","status-publish","format-standard","hentry","category-projects","tag-garage"],"_links":{"self":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/4427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/comments?post=4427"}],"version-history":[{"count":5,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/4427\/revisions"}],"predecessor-version":[{"id":4515,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/4427\/revisions\/4515"}],"wp:attachment":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/media?parent=4427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/categories?post=4427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/tags?post=4427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}