Attic Draft Stop Material

Once this hole is cut and the insulation removed the builder covers the area with a thin sheet of plywood.

Attic draft stop material.

Draft stop access doors are installed to prevent the movement of air within open areas such as attics or ceiling crawl spaces. Although not rated the door is self closing and self latching and can be opened from both sides. 708 3 1 3 draft stop construction. Draftstopping shall be installed above and in line with sleeping unit and dwelling unit separation walls that do not extend to the underside of the roof sheathing above.

Just like fire blocking draft stopping aims to stop the fire from jumping between adjacent units. Draftstopping materials shall be not less than 1 2 inch 12 7 mm gypsum board 3 8 inch 9 5 mm wood structural panels or other approved materials adequately supported. The uniform building code 2009 ed defines a draft stop as a material device or construction installed to restrict the movement of air within open spaces of concealed areas of building components such as crawl spaces floor ceiling assemblies roof ceiling assemblies and attics. The integrity of the draftstops shall be maintained.

Draftstopping shall be installed parallel to the floor framing members unless otherwise approved by the building official. If you are looking for this relevant building material access doors and panels features products from reliable brands babcock davis and cendrex. The drd is mainly designed to allow passage between attic sections while preventing back drafts from one section to the other. Draftstopping materials shall not be less than 1 2 inch 12 7 mm gypsum board 3 8 inch 9 5 mm wood structural panel 3 8 inch 9 5 mm type 2 m particle board or other approved materials adequately supported.

Must extend to the underside of the roof sheathing draftstopping materials must not be less than o 0 5 inch gypsum board o 0 375 inch wood structural panel. Draftstopping shall be provided in attics mansards overhangs or other concealed roof spaces of group r 2 buildings with three or more dwelling units and in all group r 1 buildings. Most builders cut a large hole around 10 feet in the attic to use as the door.