Fire Blocking In Exterior Walls

Horizontal basement wall fire blocking fire blocking must also be installed every 10 horizontally along the wall irc 302 11 1.

Fire blocking in exterior walls.

One layer of 3 4 in. Opening up interior and exterior walls and ceiling reviled a perfect example of chimney walls inside and out connected to ceiling truss bays. 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. Materials approved for fire blocking are just common building materials.

Two layers of 1 by lumber. Fire blocking being installed both vertical there are no sill plates anywhere and horizontally although each room runs joists different directions wall bays connect ceiling. Plywood covering any seams. In the habitat house we worked in baltimore city two weekends ago the project team installed additional fire blocking in the studs of the house by nailing a 2 4 half way up on the wall.

This provides some additional fire protection benefits and will slow the spread of a fire up a wall by limiting the amount of. These requirements contained in ibc 2015 section 718 2 2 state that fire blocking is required vertically at the ceiling. One layer of 3 4 in. Vertical basement wall fire blocking fire blocking basement walls is installed by nailing on strips of 5x8 or thicker o s b.

Spaces of masonry or concrete fire wall. If one should ever occur. Materials for fire blocking. Fire blocking between studs.

707 2 exc 6 shaft requirement may be eliminated for chimneys when fireblocked 708 4 fireblocking required in fire partitions when not continuous between deck and ceiling 803 4 ftnote a interior finish paneling over furring strips 804 4 1 subfloor construction 1406 2 4 combustible exterior wall veneers. Or drywall to the top plate and over the gap between the concrete wall and the framed wall. Fire blocking is a blocking device inserted between the top plate of your exterior wall and the exterior masonry wall. These spaces can create drafts that will allow fire to spread readily if not dealt with.

In this video i will explain what fire blocking is and how it works. We will also go through some methods used in home construction to prevent the spread of a fire. Particleboard covering any seams. In other words these cavities can act like the flue on a fireplace and actually promote the rate in which a fire could grow.