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Frt plywood roof sheathing.
Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance.
In virtually all cases engineered wood sheathing is certified for type ii iii and v construction.
It was used on townhouses and condos roofs 4 feet on each side sometimes more of the walls separating each individual unit in the late 1970 s to early 1980 s.
This plywood has been grade stamped and third party inspected to ensure quality.
Frt or flame resistant plywood is or was required by building codes for certain structures such as on either side of the fire wall between building units in multiple living unit structures apartments condos townhouses.
Description documents flamepro frtw wood has been tested for fire performance by several independent laboratories and meets model code requirements for a class a class 1 fire retardant.
Abstract fire retardant treated frt plywood used as roof sheathing has exhibited strength degradation in some situations.
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Thermal degradation of fire retardant treated plywood between 1985 and 1995 approximately 750 000 multi family housing units experienced roofing problems due to fire retardant treated frt plywood sheathing failure figs.
Shipping ship to store free.
In addition it has a higher load span ratings than frtw plywood of the same thickness and can reduce labor costs and construction time compared to gypsum over wood options.
Dricon introduced in 1981 is a class a fire retardant and preservative intended for wood used in interior weather protected construction this effective treatment is applied during manufacture creating a built.
It s common for fire rated osb sheathing to be a code compliant component of numerous ul and intertek listed exterior and interior load bearing wall assemblies.
Whether you re using plywood or lumber dricon fire retardant treated frt wood has an unmatched record of protection against flame spread smoke development rot and decay.
Requirements specifications for fire retardant plywood treatment for roof sheathing.
Research at the usda forest service forest products.
Some frt plywood products are only certified for type v construction.
Fx lumber guard xt frt osb sheathing can be used in type ii iii and v construction as a listed component in fire rated interior wall exterior wall and roof deck assemblies and as an alternative to pressure impregnated frtw plywood.
The cause appears to be certain fire retardant chemicals that are activated under environmental conditions of high temperature and moisture content.
The problem is caused by excessive exposure to solar radiation.
