Air flow carries moisture that impacts the temperature and integrity of the building. Air-flow affects a building's behavior in fire (spread of toxic smoke and gasses). Air barriers also separate garages from conditioned spaces. In this case an air barrier would also serve as a "gas barrier" an obvious safety feature.
Prodex Total = Air Barrier + Insulation + Radiant Barrier + Vapor Barrier All in One Product. One solution to Cold, Heat and Condensation - You'll be warm in winter, cool in summer and dry all the time.
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New Prodex Total 5M Plus - R17. 5mm (0.2") closed cell polyethylene foam covered on both sides with reflective reinforced foil facing. Roll Sizes : Technical Brochure
New White Prodex Total 5M Plus: R15.3. 5mm (0.2") closed cell polyethylene foam with reflective reinforced foil facing on one side and plastic white finish film on the other side. Technical brochure
New Prodex Total 10M Plus - R22. Twice as thick as regular Prodex Total. 10mm (0.4") closed cell polyethylene foam covered on both sides with reflective reinforced foil facing. Technical brochure
Any metal building or pole barn that uses fiberglass insulation rather than Prodex Total will have moisture issues (typically hidden behind facing), Loss of R-value (consequence of the moisture) and heat gain.
Air Infiltration - Air sealing and moisture control make a building more comfortable inside and save energy by making insulation more effective. A significant amount of moisture enters the walls through air leaks and capillary action from ground water below. When installed over the studs Prodex Total will act as an air infiltration barrier thereby sealing the wall to reduce heat loss from expanding warm air and prevent water vapor in the air from entering the wall cavity. Fiberglass and cellulose with a stated R-value of 25 placed in an improperly sealed house will allow wind to blow through it as if there were no insulation at all. The US Department of Energy estimate that in a 100 sq. ft. wall, one cup of water can diffuse through the drywall without a vapor barrier in a year, but 50 cups can enter through a 1/2 -inch round hole. Sealing air leaks is estimated at 10 to 100 times more important that installing a vapor barrier.
To have a total insulation system your insulation must include an air barrier - Prodex Total Air Barrier Insulation = Air Barrier + Insulation + Radiant barrier + Vapor barrier All in One Product
It's a lot easier and less expensive to install a 5 or 10 mm roll of Prodex than a bulky 6 inch roll of fiberglass.
June 12, 2018
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