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.
Frt plywood roof sheathing.
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.
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 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.
This plywood has been grade stamped and third party inspected to ensure quality.
Some frt plywood products are only certified for type v construction.
Abstract fire retardant treated frt plywood used as roof sheathing has exhibited strength degradation in some situations.
The problem is caused by excessive exposure to solar radiation.
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.
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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.
Research at the usda forest service forest products.
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.
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It adds proven performance and durability to new homes room additions and renovations.
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Frt plywood is a sheathing treated with a chemical to prevent flame spreading in the event of the fire.
In virtually all cases engineered wood sheathing is certified for type ii iii and v construction.
The cause appears to be certain fire retardant chemicals that are activated under environmental conditions of high temperature and moisture content.
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.
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