Attic Hatch Size Ontario

Unobstructed headroom of at least 30 inches must be available above the attic opening.

Attic hatch size ontario. The rough framed opening must be a minimum of 22 inches by 30 inches. Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members. This is generally about a 22 by 30 hole in the ceiling of your house into unconditioned space so it certainly deserves some consideration. B contains a fuel fired appliance.

If mechanical equipment or appliances are housed in the attic there must be an unobstructed passageway large enough for the removal of the appliance. 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. If the attic space is smaller than these specs then an access hatch is not required. Related provisions contained in the ontario electrical safety code.

The access opening should be located in a hallway or other readily accessible location and minimum 22 x 30. The ontario building code access. 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. With several hundred sf of moderately to poorly insulated as well as air leaking ductwork in a typical attic an attic hatch consisting of poorly insulated and poorly sealed 8 square feet and 12 linear feet is a relatively minor concern.

The rough framed opening. There are hundreds of things to detail properly to achieve an airtight home but one of the most commonly overlooked in a typical new house is the attic access hatch. 22 in x 30 in attic access door easy installation with a 22 in x 30 in frame size this creates the perfect fit between 24 in centered ceiling joist 24 gauge steel cut out with injected polyurethane foam for maximum thermal efficiency 1 1 4 in x 4 9 16 in primed frame for easy painting. Building code the first attic hatch to meet and exceed national building code requirements 9 19 2 1 2 no dimensions less than 545 mm attic hatch inc.

Fire as a cause of injury and death is the main reason for these restrictions. Iii 600 mm in height over at least the area described in subclauses i and ii or.