Draftstopping In Attics

Similar to fireblocking draftstopping is installed to prevent the movement of air within open building areas and is most often installed in crawl spaces attics and floor assemblies.

Draftstopping in attics.

This self closing and self latching access door allows for access from both sides of the door. Per the ibc commentary draftstopping in attics is required for the following reasons. Multi unit housing projects are often draftstopped at specific intervals to prevent fire from jumping between adjacent units via a common attic space. Some codes include other draftstopping materials such as gypsum board cement fiber board or particleboard.

The babcock davis draft stop door is a non rated access door designed to provide access through draft stop spaces in the attic while preventing a back draft from one section of the attic to another. Draftstopping is not required in buildings equipped throughout with an automatic sprinkler system in accordance with section 903 3 1 1. Even when sprinklers aren t required in attics by the nfpa installation standard they are sometimes needed by virtue of a building code allowance such as draftstopping. It is intended to separate the buildings horizontally it acts as a barrier to smoke and gases it is designed to prevent considerable damage from fire spread.

Draftstopping shall be located above and in line with the dwelling unit and sleeping unit separations. 1 if there is no useable space above the assembly an attic or below it a. In combustible construction nearly all the codes specify that lumber or wood structural panels may be used for this purpose. 4 2 penetrations and joints.

Draftstopping is used to subdivide flooring at specific intervals and in attics and crawl spaces. Los angeles building code 7 fire and smoke protection features 718 concealed spaces 718 4 draftstopping in attics 718 4 2 groups r 1 and r 2. Draftstopping shall be provided in floor ceiling spaces in group r 1 buildings in group r 2 buildings with three or more dwelling units in group r 3 buildings with two dwelling units and in group r 4 buildings. Draftstopping shall be installed in attics and concealed roof spaces such that any horizontal area does not exceed 3 000 square feet 279 m 2.