Louisiana-Pacific (LP) has developed a flame-resistant OSB panel that does not rely on traditional fire treatments.

LP’s FlameBlock fire-resistant OSB sheathing incorporates a thin coating of non-toxic magnesium oxide cement and fibreglass, which the company claims achieves nearly three times the burn-through resistance of untreated wood panels.

The product has achieved a Class A flame spread rating and international Code Council (ESR-1365) certification for common roof and wall designs in multi-family and commercial buildings.

“It is ideal for use in applications where building codes require a flame spread rating of burn-through resistance rating, or where builders desire superior fire resistance,LP said.

The product is being made available from distributors in a variety of PS2-rated thicknesses and lengths, including Struc-1.