Materials |
Siding, soffit and fascia facings and related components shall be made of prefinished galvanized sheet steel that conforms to CAN/CGSB-93.3. |
Colour and gloss shall be as agreed between user and supplier. |
The base galvanized sheet steel shall conform to ASTM A 526/A 526M and a zinc designation of Z 275. The base aluminum-zinc alloy (AZ) coated sheet steel shall conform to ASTM A 792M/A 792M and an aluminum-zinc alloy coating designation of AZ 150. The minimum thickness of the coated steel shall be 0.30 mm. |
Backing Material (if used) |
If a backing material is supplied, the material used shall be certified by the supplier to be fungi- and vermin-resistant. The thickness of the backing shall not be less than 9.5 mm when made of wood fibre composite board conforming to CAN/CSA-A247-M or polystyrene conforming to CAN/CGSB-51.20, and not less than 6.4 mm when made of polyurethane. |
Installation Hardware |
Fasteners such as nails, screws, staples and similar devices used to secure siding and facing components and installation accessories shall be hot-dipped galvanized coated or equivalent. |
J-trim, sill trim, flashing, corner posts, starter strips, and other devices used in installation with siding and facing shall be of galvanized steel ASTM A 526/A 526M, coating designation Z 275, unless otherwise specified. If material other than galvanized steel is specified, it shall be compatible with galvanized steel. |
Installation Hardware, cont. |
Sealing compounds used in conjunction with sidings and facings shall be of types that conform to the requirements of one of the following CGSB standards, unless a particular one of these is specified:
- CGSB 19-GP-5
- CAN/CGSB-19.13
- CGSB 19-GP-14, or
- CGSB-19.18.
The sealing compounds shall be compatible with the coating and base metal, and, when specified, shall be pigmented to match the colour of the coating. |