IS polyisocyanurate toxic?

IS polyisocyanurate toxic?

Polyisocyanurate (Polyiso) Halogenated flame retardants are considered a very high concern to avoid because they can be persistent and toxic.

What is polyisocyanurate foam?

Polyisocyanurate (Polyiso) is a closed-cell, rigid foam board insulation that is bonded to facers on both sides, which are composed of various organic and inorganic materials. Polyiso is used in roof, wall, ceiling and specialty applications within commercial and residential buildings of all types.

Is polyisocyanurate a foam plastic?

Polyisocyanurate foam plastic insulation, or polyiso for short, meets the most stringent building code requirements for use in buildings of any construction type and is one of the most regulated building products used in the construction of building envelopes.

Is polyisocyanurate foam flammable?

“Rigid polyurethane and polyisocyanurate foams will, when ignited, burn rapidly and produce intense heat, dense smoke and gases which are irritating, flammable and/or toxic. As with other organic [carbon based petrochemical] materials the most significant gas is usually carbon monoxide.

How long can polyiso be exposed?

Once installed, AP Foil-Faced Polyiso Continuous Insulation may be left exposed for up to 60 days. Consult your local building department for code requirements. Thermal Insulation: inch for inch, polyiso has one of the highest energy efficiencies.

Can polyiso be left exposed?

The Dow techline says that exposure up to 45 days is ok, but then the R-Value will change due to water and sun. Depending on location on the house, the reduction will vary.

Is polyiso insulation good?

Polyisocyanurate (Polyiso) insulation is an excellent choice for a variety of renovation applications because of its excellent energy conserving qualities. Common construction applications require compressive strengths adequate for polyisocyanurate to maintain its shape during installation, as well as during use.

Can polyiso insulation wet?

If an insulation, polyiso or polystyrene, is submerged in water, the insulation benefit disappears as the water short circuits around the insulation. Insulations must be kept dry. If minor contact does occur, the foil facings and closed cells of polyiso provide excellent water resistance.

Does polyiso off gas?

As an insulation it is non-toxic, and unlike foam products there are no blowing agents that will off-gas into your home.

Does Polyiso melt?

Polyiso insulation can withstand high temperatures and passes both FM 4450 and ANSI/UL 1256. Polystyrene is a thermoplastic material that softens at 165 degrees F and melts between 200 degrees F to 210 degrees F, making it incapable of reaching the standard 30-minute fire exposure.

Is Rmax fire rated?

Rmax ECOMAXci® FR Ply is a Class A energy-efficient thermal insulation board composed of a closed-cell polyisocyanurate (polyiso) foam core with glass fiber reinforced aluminum facers on both sides bonded to 5/8” or 3/4” fire retardant treated plywood.

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