NATIONAL BUILDING CODE

The Canadian National Building Code requires an Attic Access to meet the following:

Section 9.19.2. Access

9.19.2.1.2. Access
2) The hatch required in Sentence (1) shall be not less than 550 mm by 900 mm except that, where the hatch serves a single dwelling unit, the hatch may be reduced to 0.32m square in area with no dimension less than 545mm

Attic Hatch Inc. Specs
• Attic Hatch opening is 545mm x 615mm when the lid is removed
• Total area of unobstructed opening is .335m² when the lid is removed

Attic Hatch Inc. is the only company in Canada that manufactures an attic access assembly that meets this building code requirement.

Section 5.4. Air Leakage

5.4.1. Air Barrier Systems
5.4.1.1. Required Resistance to Air Leakage
Where a building component or assembly separates interior conditioned space from exterior space the component or assembly shall contain an air barrier system.

Attic Hatch Inc. Specs
Rate of Air Leakage ( ASTM E283)

Performance Test Results
Test #1 "Attic Hatch Inc." Construction One Panel CSA A440 Test Rating - A1
Test # 2 "Attic Hatch Inc." Construction Two Panels CSA A440 Test Rating - A2
(full Air Leakage test report available on request)

Attic Hatch Inc. is the only company in Canada that manufactures an attic access assembly that meets this building code requirement.

Section 5.3. Heat Transfer

5.3.1. Thermal Resistance of Assemblies
5.3.1.1. Required Resistance to Heat Transfer
Where a building component or assembly will be subjected to an intended temperature differential, the component or assembly shall include materials to resist heat transfer.

Attic Hatch Inc. manufactures an attic access assembly that meets this building code requirement.

Section 5.5 Vapour Diffusion

5.5.1.1. Vapour Barriers
5.51.1. Required Vapour Barriers
Where a building component or assembly will be subjected to an intended temperature differential and differential in water Vapour pressure, the component or assembly shall include a vapour barrier

Attic Hatch Inc. manufactures an attic access assembly that meets this building code requirement

Attic Hatch Inc. is the only company in Canada that has developed and patented a pre-built attic access assembly that meets all national building code requirements. The "Attic Hatch" consists of a metal outer frame that is drywalled into the ceiling, making the attic hatch frame totally air tight. The access lid consists of an extruded vinyl profile with weather-stripping and a recycled polyurethane insulated steel skin panel. When primed and textured, along with the ceiling, it becomes virtually invisible.

The first and only attic hatch that meets and exceeds Canadian National Building
Code requirements.
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