definition
strict definition
phenolic foam
Related terms: tripolymer spray foam
Phenolic polymer foam applied in place within wall or roof cavities for thermal insulation.
Phenolic foam is a synthetic polymer insulating material which is inserted or layered into wall or roof cavities as an air-propelled spray. It can contribute to air sealing and acoustic insulation, and it can be inserted into spaces where other forms of insulation (such as fiberglass or cellulose) are present.
The definition concerns foam inserted or sprayed in place. Rigid phenolic insulation boards have a separate panel form.
The foam can occupy cavities alongside other insulation materials. Some phenolic foams shrink after curing, which can affect contact with the surrounding surfaces.
Related definitions
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cellulose spray
A mass of fine particulate plant fiber sprayed into wall and roof cavities for thermal insulation. -
cementitious foam
Thermal and acoustic insulation formed from magnesium oxide cement with air pockets introduced during foaming. -
polyethylene foam
Thermal insulation made from polyethylene plastic foam containing gas-filled cavities. -
polyisocyanurate foam
Insulating foam made from polyisocyanurate, a plastic similar to polyurethane. -
polyurethane foam
Insulating foam made from polyurethane and sprayed onto a surface or into a cavity. -
urea-formaldehyde foam
Sprayed insulation consisting of urea-formaldehyde, a yellowish synthetic resin.