Floor Ceiling Fire Blocking Details

The drywall that is your ceiling is a form of fire blocking.

Floor ceiling fire blocking details. Materials for fire blocking. We had to install fire blocking every 10 verti cal feet in these tall bays. Fur downs including drop down tray ceilings. For a 2 x 4 wall use a 2 x 4 block for a 2 x 6 wall use a 2 x 6 block.

Confusion about how to protect pipes and similar penetra. The stud walls at soffits and drop ceilings and at the top and bottom of stair stringers etc by fireblocking. Knee walls how to handle upper story knee walls depends. It s purpose is to prevent the spread of smoke and flames from reaching the bottom of the 1st floor of your home from the basement area thereby burning through and spreading to the 1st floor of the home.

Shed porches that attach to a tall wall at the ceiling and the roof line. Typically inspectors are looking for fire blocking in the gaps between the foundation wall and the framed wall of your basement specifically at the top of that wall area. Here we see a soffit similar to what you see above cabinets in which the opening to the floor ceiling assembly occurs below the top plate. Particleboard covering any seams.

Step 4 fire blocking floor and ceiling openings all penetrations through the plates on a wall must be sealed with a foam caulk or insulation that is fire rated. Fire blocking designed to slow down the spread of fire from one floor of your house to the next. The intent is to contain a fire within the wall cavity to a small area and to impede the fire from freely migrating to other connecting con cealed spaces. Fire blocking is a blocking device inserted between the top plate of your exterior wall and the exterior masonry wall.

That rule has been dropped but we still have to block where a flat ceiling or attic floor meets the rake wall. Materials approved for fire blocking are just common building materials. The most often used product is a expanding. Two layers of 1 by lumber.

Bonus rooms if the floor level ties into a stud wall. Material for fire blocks. Plywood covering any seams. One layer of 3 4 in.

The blocks must be as wide as the wall. Through penetrations we have a broad innovative line of caulks putties sealants foams devices and large opening solutions for mechanical electrical and plumbing mep penetrations and membrane applications. 3m firestop solutions browse all firestop products. We provide a comprehensive portfolio of fire smoke.

With cathedral ceilings the double top plates serve as fire blocking. Any time a duct plumbing pipe or electrical wire goes through a floor or ceiling it must be sealed around it with some type of fire stop.