BLD20161651 Fire Insulation Letter.pdf
January, 2017
Re.: Spray Polyurethane Foam Compatibility with other Construction Products
Spray polyurethane foams have been used as a superior insulation material throughout the world for more than two
decades and are some of the most extensively tested construction materials in use today. Literally hundreds of third party
laboratory test have been performed by internationally recognized agencies to verify the fire safety, durability, air and
vapor permeability, non-corrosiveness, compatibility with other construction materials, air quality and the energy and
health benefits of polyurethane foam products.
Accella Polyurethane Systems manufactures QuadFoam 500, QuadFoam NatureSeal OCX, and QuadFoam 2.0 spray
®®®®
polyurethane insulation systems which have been safely used in thousands of applications, structures, and homes. The
PH of foam is near neutral. Its auto ignition point (the point at which it will ignite) is much higher than wood; e.g., the
auto ignition points for QuadFoam 500, NatureSeal OCX and QuadFoam 2.0 are over 850°F while most framing woods
are less than 500°F. It has been proven compatible on literally millions of feet of other construction materials without any
detrimental effects to the materials. These materials include, but are not limited to, masonry, wood, wood composition,
Mylar, various types of metals (primed, painted, unpainted and galvanized), PVC, CPVC, PEC, PEX, and vinyl.
When an electrical wire is under duress either by exceeding the capacity or due to damage, the resulting failure will lead
to arcing, carbonization, and potentially a fire. In most cases, when this occurs, the spray polyurethane foam will not
ignite, however under rare circumstances a fire might start. The result of an electrical fire may cause the foam to carbonize
in a localized manner however the fire will not propagate once the current has been shut down.
Electrical wiring, when properly installed and the amperage/voltage is within tolerance, in contact with properly installed
spray polyurethane foam will not cause the wiring to overheat or otherwise fail. There is no evidence to suggest that
polyurethane foam would cause this to happen.
Our materials have been evaluated and are compliant with the International Residential Code (IRC), the International
Energy Conservation Code (IECC), and the International Building Code (IBC).
Please feel free to contact the Accella Building Science Team should you have any questions or need any further
information.
Sincerely,
--Stephen Davis
North American Product Manager Insulation Systems
Building Science Engineer
Accella Polyurethane Systems