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Icynene Spray Foam Insulation provides a complete seal that not only stops air leakage but also mitigates the penetration of allergens and pollutants, dampens noise, and reduces fire risk in unvented attics. Icynene helps trim heating and cooling bills by up to 50 percent, saving you hundreds of energy dollars annually.
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Trying to decide the best insulation for your home? Compare the different types of insulation with The Money Pit Guide to Insulation
Hey Tom, nice posting about using Icynene spray foam. We also do spray foam works. What is the foam to use for rooftops during winter time projects?
I caught the tail end of your segment regarding foam insulation. The part I heard indicated that foam insulation was also useful in sealing around girders, rafters and joists in the attic. I have been battling a leaky roof for years, despite putting a on a new roof. When I mention using any type of foam sealant from the underside of the roof, my roofers all say it is a bad idea as water will just leak in between the roof and the sealant. Who’s right?
I’m a bit confused about your reference to using spray foam insulation to seal out water leaks — that’s not what it’s designed for. No matter what type of insulation you use, your roof should be water tight regardless.
Typically however, there is confusion amount roofers and other trade professionals about why spray foam can be applied to the underside of a roof (from the attic). The key differences is this. Batt insulation like fiberglass MUST be ventilated. If not, it will get damp, not insulate very well and can leak to decay of at least the roof sheathing. This type of attic would be referred to as an “unconditioned”. With spray foam insulation, no ventilation is needed. The attic can and should be completely sealed in as its designed for a “conditioned” space. I have personally converted my attic insulation from batts to using spray foam insulation and the increased comfort and decreased energy bills were very significant. You can read more about my experience with spray foam in our insulation guide here: https://www.moneypit.com/guides/money-pit-guide-home-insulation/.