Fire Rated Roof Sheathing

2 hour exterior wall assembly ul design no.

Fire rated roof sheathing.

It combines flame spread and burn through resistance to give your customers. Densglass sheathing adds performance and durability to a wide range of fire rated and non fire rated building assemblies. Dens solutions are industry trusted high performing fiberglass mat gypsum panels suitable for your wall roof ceiling and floor projects. Our second photo of a contained spread of fire left illustrates the object of using this fire resistant roof sheathing.

One goal of this column will be to increase your understanding of each of these ratings and. Magtechtm structural sheathing can be used in fire rated wall applications as well as for fire retardant structural sheathing on exterior and interior walls pitched roofs flat roof decks and floors. Magtechtm offers superior performance with both increased fire resistance and improved structural capacity in a single panel. The plywood industry states that the flame spread rate of frt plywood is at least as low as gypsum wallboard although without specifying which fire rated wallboard was used for comparison.

With its exposure 1 classification lp flameblock sheathing in roof deck applications is able to withstand exposure to moisture during normal construction delays. Advantech sheathing 5 8 cat ps2 10 osb sheathing application as 4 x 8. Roofing systems are rated by realistic fire tests. 1 2 x 4 x 8 fire retardant plywood sheathing.

An engineered wood product fire rated osb sheathing such as lp flameblock sheathing eliminates a layer of gypsum by combining an ignition resistant cementitious coating with a layer of osb. Fire rated wall assemblies lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies. Current definition of frt plywood. It carries an exposure 1 classification which means it can withstand normal exposure to moisture during construction.

Our roof systems are rated by code for external fire resistance under deck exposure and time temperature resistance. We must emphasize however that individual roof components are not rated at all. Prices promotions styles and availability may vary by store and online. Inventory is sold and received continuously throughout the day.

Therefore the quantity shown may not be available when you get to the store.