In this video i will explain what fire blocking is and how it works.
Fire blocking in exterior walls.
Fire blocking is a blocking device inserted between the top plate of your exterior wall and the exterior masonry wall.
Or drywall to the top plate and over the gap between the concrete wall and the framed wall.
Vertical basement wall fire blocking fire blocking basement walls is installed by nailing on strips of 5x8 or thicker o s b.
One layer of 3 4 in.
One layer of 3 4 in.
These spaces can create drafts that will allow fire to spread readily if not dealt with.
Fire blocking between studs.
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.
We will also go through some methods used in home construction to prevent the spread of a fire.
Two layers of 1 by lumber.
Spaces of masonry or concrete fire wall.
In other words these cavities can act like the flue on a fireplace and actually promote the rate in which a fire could grow.
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.
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.
Particleboard covering any seams.
Materials approved for fire blocking are just common building materials.
The international building code ibc has fire blocking requirements that are intended to limit the spread of flames smoke and gases in combustible concealed spaces such as a wood frame wall cavity.
These requirements contained in ibc 2015 section 718 2 2 state that fire blocking is required vertically at the ceiling.
This provides some additional fire protection benefits and will slow the spread of a fire up a wall by limiting the amount of.
Materials for fire blocking.
Blocking or nailers used to support fixtures railings cabinets and support of interior and exterior finishes furring strips as permitted in ibc section 803 11 combustible exterior wall coverings balconies and similar projections and bay or oriel windows in accordance with ibc chapter 14.
Horizontal basement wall fire blocking fire blocking must also be installed every 10 horizontally along the wall irc 302 11 1.
Fire blocking in stud walls is required in wood framed buildings to stop drafts in the cavities between framing members.
