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.
Attic hatch size alberta.
Iii 600 mm in height over at least the area described in subclauses i and ii or.
Minimum vertical height of 30 inches measured from the top of the ceiling framing members to the bottom of the roof framing members.
The attic hatch consists of a metal outer frame that is drywalled into the ceiling making the attic hatch frame totally air tight.
It is easy to install and has a natural wood finish.
With exposed insulation in the attic access is not recommended unless protective clothing and breathing apparatus are worn.
The rough framed opening must be a minimum of 22 inches by 30 inches.
If the attic space is smaller than these specs then an access hatch is not required.
Access hatches are generally built to the minimum acceptable dimensions of 500 mm by 700 mm further limiting the size of material that can be moved into the attic.
Unobstructed headroom of at least 30 inches must be available above the attic opening.
The rough framed opening.
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 access opening should be located in a hallway or other readily accessible location and minimum 22 x 30.
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.
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.
33 5 inch x 21 5 inch attic hatch this attic access is polyurethane filled for a high insulation value.
1 every attic 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.
Specification at 547 2 mm a 5 4 1 2 1 and 2 air leakage through air barrier system astme283 air leakage single panel csa a440 test rating a1 double panel csa a440 test rating a2.
You could feel good about your purchase of this attic hatch made from recycled materials.
B contains a fuel fired appliance.