Can I rent the equipment and do it myself?
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While we encourage DIY on many things to save money, spray polyurethane foam (SPF) equipment is expensive and requires a lot of training. Installation of SPF needs to be done by a well-trained and certified installer. Certified It's not as easy as it looks. There are some small kits on the market, but they are made for very small projects like sealing joints and cracks.
I see spray foam being advertised by my local hardware store, can't I just buy that and do it myself?
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There are some small kits on the market, but they are made for very small projects like sealing joints and cracks.
At what point in the construction should the foam be applied?
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Typically spray foam insulation is installed at the same point in the construction as other types of insulation. It should be installed after the rough plumbing, electrical and heating and air conditioning ducts have been installed. If you decide to seal the entire exterior shell with spray polyurethane, spray insulation may need to be applied in some areas before the ductwork is installed. If we can't get to it we can not spray it.
Do I need to have a vapor barrier over the foam?
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2 inches of foam provides insulation as well as acts as a vapor barrier
What is the R value of spray foam insulation?
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The LTTR value of Genyk Boreal is 6.2/in
How does spray foam work?
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A two-part mixture is applied by trained professionals to the surface to be insulated. The spray mixture expands rapidly to fill all cracks and voids, completely and permanently adhering to wood, masonry, metal, concrete, and most other construction materials.