Evaluated by ICC-ES, LP® FlameBlock® Fire-Rated Sheathing combines flame-spread and burn-through resistance in applications that meet building code requirements for fire-resistant construction. A building solution that provides strength, savings and easy installation – at an affordable price.

LP FlameBlock Fire-Rated OSB Sheathing is ICC-certified to meet code and provides additional value strength, savings and greater design flexibility. It helps you build fire-rated wall assemblies and roof deck faster at a lower cost than most common alternatives.

LP ® FlameBlock ® Fire-Rated Sheathing is a component of 1- and 2-hour fire-rated wall assemblies. It combines flame-spread and burn-through resistance that helps you meet code and give your customers peace of mind.

LP FlameBlock Fire-Rated Sheathing is a single-sheet solution made of APA-rated OSB sheathing paired with a noncombustible Pyrotite® coating. It doesn’t just offer builders a smart solution; it can also provide homeowners with added peace of mind and protection.

LP FlameBlock Fire-Rated OSB Sheathing helps you meet fire codes while reducing dead load and wall thickness versus common alternatives. Meeting fire codes just got easier - structural strength and code compliance in a single panel.

MagTech™ Fire Retardant OSB Sheathing is a patent-pending, code compliant, fire retardant, non-combustible wood panel system that incorporates the extraordinarily flame and heat resistance of magnesium oxide with the structural ability and overall utility of OSB to create a uniquely high performing fire-resistance rated structural sheathing ...

LP® FlameBlock® Fire-Rated OSB Sheathing gives you the freedom to design a more efficient wall. It eliminates the need for an extra layer of gypsum, speeding construction time and reducing material and labor costs.

LP® FlameBlock® Fire-Rated OSB Sheathing is ICC-certified to meet code and provides additional value—strength, savings and greater design flexibility. It is a component of code-compliant fire-rated wall assemblies and roof deck applications:

LP FlameBlock Fire-Rated OSB Sheathing is ICC-certified to meet code and provides additional value strength, savings and greater design flexibility. It helps you build fire-rated wall assemblies and roof deck faster at a lower cost than most common alternatives.

LP FlameBlock Fire-Rated OSB Sheathing panels are made of oriented strand board (OSB) with a fire-resistant, cementitious coating (PyrotiteTM) bonded to one or both sides. The coating consists of a highly hydrated, magnesium oxychloride cement reinforced with fiberglass.