If you re going to be spending time in the new attic conversion it would be nice to be able to stand up straight.
Attic access size ontario.
The rough framed opening.
Building codes according to the 2006 international residential code r807 1 attic access homes with combustible materials in the ceiling and roof construction must have an access to attic areas that exceeds 30 square feet and with a vertical height of 30 inches or greater.
Lightweight door easy 1 person install alternative to pull down ladders e z hatch mark d.
The ontario building code attic or roof space access.
The ontario building code access 9 19 2 1.
R 42 attic access hatch fits between trusses 24 o c.
Tuesday january 28 2020.
1 an attic or roof space more than 600 mm high shall be provided with access from the floor immediately below by a hatchway not less than 550 mm by 900 mm or by a stairway.
If the opening is located in a wall the 30 inch dimension must be vertical.
Purchase some 2 4 interior door jamb stock from your local building supply centre or any shop that supplies doors for homes.
What is the minimum size for attic access opening.
Related provisions contained in the ontario electrical safety code.
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.
The rough framed opening must be a minimum of 22 inches by 30 inches.
This generally comes in 7 lengths and you will need three pieces of it for a standard sized attic access hatch.
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.
Attic or roof space access 1 an attic or roof space more than 600 mm high shall be provided with access from the floor immediately below by a hatchway not less than 550 mm by 900 mm or by a stairway.
Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet 2 8 m2 and have a vertical height of 30 inches 762 mm or greater.
If the access is located in the ceiling the minimum.
And joists 16 o c.
You may also want to or even be required to add windows to allow for some natural light as well as some ventilation.