Can I use OSB for fire blocking?

Can I use OSB for fire blocking?

to fire block at these locations will no longer be accepted. OSB with any joints overlapped at least 3″ with an additional layer of 3/4” OSB or 26 ga sheet metal w/ joints overlapped. Fire Blocking must block the concealed space and between the studs.

Do all walls have fire blocks?

Yes and no. If the hollow interior bays between each stud of your interior wall, in any way, lead ANYWHERE but just straight up to the top plate, with solid drywall on both sides, (or even without D/W on both sides) they will likely require fire blocking.

Can I use rockwool for fire blocking?

Mineral wool, which generally includes the rock wool as well as fiberglass material, serves as a fire blocking material. If you are planning on using the wood stud size you describe, you would be achieving an acceptable fire blocking material and the material would be “friction fit” into the cavity between the studs.

Do I have to fire block interior walls?

Although interior walls must be fireblocked, there is no 4′ requirement in the IRC code. They must be fireblocked at the platelines and any spaces that exceed 10′ heights. 4′ blocks are typically for blocking edges of exterior sheathing laid horizontally, and aren’t intended to serve as fireblocks.

What is the difference between fire blocking and Draftstopping?

Fireblocking and draftstopping have similar, but slightly different, purposes. As you see here, fireblocking is intended to resist the movement of flames, where draftstopping is intended to resist the passage of smoke and gases. Fireblocking is intended to resist upward movement of flames, smoke, and gases.

What kind of block to use for fire blocking?

Types of Fire Blocking Most carpenters think of fire blocking as short scraps of 2×4 or 2×6 nailed horizontally in stud bays. While we do use lots of short blocks, there are also places where a single piece of lumber or plywood will achieve the same result.

Do you have to be fire proof to use fire block?

Ironically, fire blocking material does not have to be fire-proof. It just has to keep the fire from getting fuel (air/oxygen). Here’s my best attempt at visually explaining what fire blocking is and where it goes. In this example there is NO fire block. The fire can get air and move freely. (not good)

Where to put fire blocks on a wall?

several ways to fire block an area like this. Typically, fire blocks are installed in the stud bays next to soffits. If drywall has been installed on the wall before the soffit is built, no additional fire blocking is needed. Installing a single piece of material across the face of the studs is often faster than using individual blocks.

What should I use to block a fire in my basement?

One layer of 3/4-in. particleboard with 3/4-in. particleboard covering any seams. Fire block and firestop are two different concepts and use different materials. In any case, the underlying theme is to not spread the fire as much as possible.