Spray Foam Roof Insulation Thickness

What s the recommended thickness of a spray foam roof.

Spray foam roof insulation thickness.

The icc es report for insulstar spray foam from ncfi esr 1615 issued february 1 2005 lists a maximum thickness of only 2 inches. Again the thickness or thermal resistance of the high density closed cell spray foam is specified by the international residential code irc based on climate zone. There you have it. I can also tell you that 73 of all statistics are made up on the spot so please don t ask for.

Open cell spray foam is a perfectly acceptable insulation product to use in attics. Do it right and your roof will not rot. Beware of roofers in homes with spray foam insulation. A 3 in thick layer of open cell spray foam has a permeance grade of 16.

Ultimately the spray foam insulation cost will be predominately influenced by the type of spray foam insulation you need the thickness and area that you want to insulate. But what thickness is most beneficial to my roof. Spray foam insulation cost may be a more expensive option in the beginning but in as little as 1 3 years you will have made the money back by the amount you save in your. Most low slope roof construction using spray foam use a hybrid approach where a combination of high density closed cell spray foam is used with fiberglass or cellulose insulation.

The movement of air into indirect conditioning of an unvented attic is a slow gradual process that will not be noticeable by occupants and typically will not put any strain on the hvac system. Choose foam it green spray foam insulation kits and don t settle for less than you deserve. The rapid growth of sprayed foam insulation in building construction thanks in part to its immediate and long term. Spray foam insulation is a great product.

I ve been in plenty of these homes and can tell you that when spray foam is installed properly they outperform 99 of fiberglass batt insulated stick built homes. Open cell spray foam insulation. Spray foam insulation comes in two types open cell and closed cell. Although spray foam insulation has been in use since the 1940s primarily for aircraft for the past 30 years continual product innovation has seen the increased adoption of spray foam insulation in residential and commercial construction.

I don t want the costs of applying additional foam to outweigh the benefits it will provide. Does your spray foam insulation need a thermal or ignition barrier. But spray foam insulation used at the underside of the roof deck would need to be covered by a thermal barrier and intumescent coatings are commonly used. Homes insulated with it can be some of the most efficient and comfortable homes built.

Open cell spray foam has a low density which makes it vapor permeable. You may be wondering spray foam roofs get spray applied meaning they can be a inch 2 inches or 10 inches or really any thickness a spray foam applicator feels like doing. The 1 question to ask before putting spray foam in your attic. If you d like to start saving money and time today buy foam it green spray foam insulation now or call us at 800 516 0949.