Under the 2010 crc is attic draftstopping required under cbc 717 4 sfr attic areas 3000 sf would require it.
Attic draftstop door type r302.
The 2010 crc r302 12 provides requirements for draftstops at floor ceiling assemblies.
Ventilation of concealed roof spaces shall be maintained.
R302 12 draftstopping in combustible construction where there is usable space both above and below the concealed space of a floor ceiling assembly draftstops shall be installed so that the area of the concealed space does not exceed 1 000 square feet 92 9 m 2.
The scope of this project is to evaluate draftstopping in concealed combustible attic spaces.
In order to meet ul requirements it is self closing and self latching.
Draftstopping draftstop is defined by the international building code as.
This self closing and self latching access door allows for access from both sides of the door.
The nystrom draft stop door is a non rated access door designed to provide access through vertical openings of draft stop spaces in the attic while preventing a back draft from one section of the attic to another.
As per ul standards once the installation is complete and the provided springs installed this door will be self.
2 if the assembly isn t concealed an open floor ceiling assembly above a.
Draftstopping is required in concealed spaces in type v combustible construction to subdivide attic spaces.
718 4 draftstopping in attics.
This self closing and self latching access door allows for access from both sides of the door.
The only place i can see where attic draftstops are referenced in the crc is at section r302 3 for two family dwellings.
It comes with a 1 flange for an easy flush installation on any type of surface material.
The space between the ceiling beams of the top story and the roof rafters.
But not under crc.
Wall assemblies need not extend through attic spaces where the ceiling is protected by not less than 5 8 inch 15 9 mm type x gypsum board an attic draft stop constructed as specified in section r302 12 1 is provided above and along the wall assembly separating the dwellings and the structural framing supporting the ceiling is protected by.
The drd access door is not insulated.
1 if there is no useable space above the assembly an attic or below it a crawlspace draftstoppingisn t required.
Each side of draftstop approximately of equal sizes there are some points to be made about the draftstoppingrequirements.
In combustible construction draftstopping shall be installed to subdivide attic spaces and concealed roof spaces in the locations prescribed in sections 718 4 2 and 718 4 3.
