{"product_id":"radiant-barrier-perforated-4-x-250-1000-sq-ft","title":"Perforated Radiant Barrier Foil - 4' X 250' (1,000 sq ft)","description":"\u003cp\u003e\u003cem\u003eAlso available in \u003ca href=\"https:\/\/www.ecofoil.com\/products\/radiant-barrier-perforated-4-x-125-500-sq-ft\" title=\"Perforated Radiant Barrier Foil for Attics - 500 sq ft rolls\"\u003e500 sq ft\u003c\/a\u003e rolls.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eEcoFoil Perforated Radiant Barrier uses reflective technology to increase the energy efficiency and comfort level of your home. A radiant barrier is made of a thin layer of woven polyethylene which is sandwiched between two layers of a highly reflective metalized coating. With the polyethylene core, the perforated foil cannot be ripped or torn. It blocks 96% of radiant heat transfer, helping keep your home cooler in the summer and warmer in the winter.\u003c\/p\u003e\n\u003cp\u003ePerforated radiant barrier has tiny pin holes punched every 1\/4\" throughout the roll, making it the only product to be used as a radiant barrier for your \u003ca href=\"\/pages\/attic-insulation\" data-mce-href=\"\/pages\/attic-insulation\"\u003eattic\u003c\/a\u003e. This is because Perforated Radiant Barrier allows moisture, at a molecular level, to pass through it. Perforated foil works by reflecting heat away from the attic during long, hot summer days and reflecting heat back into your living space during those cold winter nights.\u003c\/p\u003e\n\u003cp\u003eIn a warm climate or Summer application, the best installation is on the bottom of the rafters or trusses with staples. In a cold climate or Winter application, the best installation is over the insulation on the attic floor, laid right on top. For dual climates and maximum efficiency it is recommended to install attic radiant barrier in both places. \u003cspan data-mce-fragment=\"1\"\u003eThis 1,000 square foot roll is perfect for a DIY or large-scale project. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cspan class=\"s1\"\u003eR-Value Of Radiant Barriers\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cspan class=\"s1\"\u003eRather than rating by R-value, all radiant barrier products are measured by their\u003cspan\u003e \u003c\/span\u003e\u003ci\u003ereflective\u003c\/i\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eemissive\u003c\/i\u003e\u003cspan\u003e \u003c\/span\u003eproperties. EcoFoil perforated radiant barrier foil is 96% reflective and 4% emissive, meaning the product only allows 4% of radiant heat to pass through. \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cspan\u003eFor more information on R-values, see our \u003c\/span\u003e\u003ca href=\"https:\/\/www.ecofoil.com\/pages\/how-does-radiant-barrier-work\" title=\"How radiant barrier works\" data-mce-href=\"https:\/\/www.ecofoil.com\/pages\/how-does-radiant-barrier-work\"\u003eHow It Works\u003c\/a\u003e\u003cspan\u003e page or contact a member of our service team via chat, calling (888) 349-3645, or using the form \u003c\/span\u003e\u003ca href=\"https:\/\/www.ecofoil.com\/pages\/contact-us\" title=\"Contact EcoFoil\" data-mce-href=\"https:\/\/www.ecofoil.com\/pages\/contact-us\"\u003ehere\u003c\/a\u003e\u003cspan\u003e.  \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003eImportant\u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e- It is\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eNOT RECOMMENDED\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eto use any type of tape on the EcoFoil Perforated Radiant Barrier in your attic. The tape will block the perforations and allow condensation to form in these places.\u003c\/p\u003e","brand":"Ecofoil","offers":[{"title":"Default Title","offer_id":31789762510922,"sku":"EFM4800-48-250PERF","price":195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/9961\/8634\/files\/Amz22_e011baec-397a-4ad3-a7b4-633d47a50d23.jpg?v=1694806943","url":"https:\/\/www.ecofoil.com\/products\/radiant-barrier-perforated-4-x-250-1000-sq-ft","provider":"EcoFoil","version":"1.0","type":"link"}