Additionally, at least one contractor has offered (for > $900) to remove our existing rock wool & R-13 fibreglass from the attic floor to "increase cross-ventilation into the attic". I have printed out your article and the blogs to give to my contractors and architect, but I would really appreciate your comments on the products being used in my part of the US. We are thinking of all our customers in these truly unprecedented times and would like to thank you for your patience. Well we are here to alleviate all the misconceptions. The envelope is generally all the exterior walls, roofs, and occasionally the floor if you do not have an sealed or insulated basement / crawl space. I employed a company to insulate my three story house in 2011. Personal protective clothing and gear ensures that the spray foam applicator: Icynene items have the best safety record that exceeds expectations; this record spans over more than 25 years and covers more than 350,000 insulation done using Icynene. Many builders or homeowners don't know how to find one, however, and that's where third party inspections come in. As of October 2012, 1 year and 2 months of dealing with the contractor I told them I want proof that what has been installed carries a warranty or I want my money back and I will fix the problems myself. Great post; very thorough. Some people have the mistaken impression that if you get spray foam in your house, your home will outperform all others. Points well taken, however I must dissect 'but in the end you can't separate spray foam insulation from its installation' to some degree. exposed roof deck, and am also concerned about the air pockets/gaps that exist behind every baffle. VERY cold winter. The rest of the house will have fiberglass insulation. The problem was that the installer was doing his first spray foam job ever, and the thickness of the insulation varied from zero (visible roof deck) to about 9". Before getting our home insulation done. Has a measure of safety around high-pressure spray equipment. He said that sometimes just letting the hose idle for a while causes the foam to overheat and pull away like that. Seems to me I can't both minimize fumes AND increase cross-ventilation. I did this partly because it's worthy of an article all by itself, but mainly I didn't include it because, despite all the warnings the two sides issue about the other, I've never personally seen a problem caused by using open cell where they should've used closed cell or vice versa. Air sealing your home using Icynene spray foam roof insulation cost creates a cocoon effect, increasing the comfort of your home. We noticed recently that some of the foam was shrinking and seperating from the floor joists. Developed 31 years ago, Icynene has been the No.1 insulation in North America and has now taken the UK by storm. Service Experts Heating & Air Conditioning. For example, when encapsulating an attic by foaming along roof rafters and decking, the entire attic must be sealed to bring the attic inside the thermal boundary. We are Icynene accredited contractors, and you can take advantage of our free site survey service to get an experienced surveyor to come and inspect your site. You will most likely have comfort and efficiency problems. Once I got a call to look at a 10,000 square foot house that had spray foam throughout, but the owners had a serious problem in their first summer in the house. I'm sure things like that happen; I just haven't seen it yet. People just need to get referrals and do their homework whenever they research a spray foam contractor. Hope you and Parker are doing well. We live in the Northeast and having trouble finding out if spraying closed cell poly foam in the crawlspace under our bedroom floor is a health benefit or health hazard. Either he wasn't properly trained or if he was,he wasn't doing his job! 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