Attic Access Size Bc

Measure the rough opening in your ceiling both the width and length.

Attic access size bc.

Access 1 everyattic or roof space shall be provided with an access hatch where the attic or roof space a measures not less than i 10 m in area ii 1 000 mm in length or width and iii 600 mm in height over at least the area described in subclauses i and ii or. When the access is located in a ceiling minimum unobstructed headroom in the attic space shall be 30 inches 762 mm at some point above the access measured vertically from the bottom of ceiling framing members. And joists 16 o c. Public libraries have reference copies of the codes available.

1 800 663 6105 fax. Standard openings are 22 5 x 54 but some homes have wider openings. The united states fire administration estimates that in just a two year period from 2006 to 2008 close to 10 000 residential attic fires occurred resulting in nearly half a billion dollars worth of damage. The bc building code bc plumbing code and bc fire code are available in print and online subscription formats from the queen s printer.

The type of attic access determines the means you can install for entrance into the attic. The ontario building code access 9 19 2 1. Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that have a vertical height of 30 inches 762 mm or greater over an area of not less than 30 square feet 2 8 m 2 the vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members. See section m1305 1 3 for access requirements where mechanical equipment is located in attics.

Conversely some homes have smaller openings or hatches. R 42 attic access hatch fits between trusses 24 o c. Fire as a cause of injury and death is the main reason for these restrictions. Minimum opening size the 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches.

Here in canada our minimum attic insulation requirement is r 40 that s a metric u value of 0 142 if you re in europe or actually using the units we re supposed to be in canada. It s important to understand the opening size you have or will create to ensure you select the correct attic ladder product for your home.