Draft Stops In Attics

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Draft stops in attics.

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. We do not need drafts stops in attics because there is an attic access. Just like fire blocking draft stopping aims to stop the fire from jumping between adjacent units. Draft stops shall be installed in attics mansards overhangs false fronts set out from walls and similar concealed spaces of buildings having uses other than dwellings or hotels so that the area between draft stops does not exceed 3 000 square feet 279 m and the greatest horizontal dimension does not exceed 60 feet 18 288 mm.

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. The current requirement of draft stops being required in attics larger than 3 000 square feet was included in the 1970 code adopted by the city of austin on dec. We do need drafts stops in mansards because the mansard attic is an enclosed space without an access. Basically any structure built or remolded since the early 1970s needs to have draft stopping every 3 000 square feet of attic space.

If you are looking for this relevant building material access doors and panels features products from reliable brands babcock davis and cendrex. Draft stop access doors are installed to prevent the movement of air within open areas such as attics or ceiling crawl spaces. Draft stop access door. If i provide an access to the mansard attic area i do not need draft stops.

Over the decades the size of attic space that required draft stopping has changed.