Foams are often used for insulation with a wide variety of applications. They’re found in walls, ceilings, roofs, attics, structural insulated panels (SIPs), patio assemblies, and in the case of geofoam, as a foundation for laying roads. NTA understands that different foams serve different needs, and each is subject to different standards for code compliance. Four common foams are:
Expanded polystyrene (EPS): A rigid, closed-cell foam usually made of pre-expanded polystyrene beads and manufactured in large blocks.
Extruded polystyrene (XPS): A rigid, closed-cell foam that consists of melted polystyrene crystals, which are combined with additives, forced through a die, and then cooled and trimmed.
Preformed polyisocyanurate: Typically produced as a foam and manufactured in blocks.
Spray polyurethane (SPF): A spray-applied insulating foam. It’s manufactured as liquid, but expands and hardens upon application.
Chapter 26 of the International Building Code outlines the code compliance requirements for foam plastic insulation used in exterior walls. NTA can verify code compliance through these generally required tests (although other tests, such as ASTM C297, could also be performed):
Potential heat (NFPA 259)
Flame-spread and smoke-developed indices (ASTM E84)
Fire propagation (NFPA 285)
Ignition (NFPA 268)
What NTA can do
NTA can help you demonstrate that your products meet code requirements. NTA can also conduct tests to several different methods, including but not limited to:
Leachable chloride, fluoride, silicate and sodium ions
Response to thermal and humid aging
NTA offers a single solution for all testing, inspection, certification, evaluation, and follow-up services. Having all the required services performed by a single vendor saves you a significant amount of time and money.