1) Finished flooring shall be provided in all residential occupancies.
1) Where water permeable finished flooring in bathrooms,
kitchens, public entrance halls and laundry areas is supported
by a subfloor of a type that would be damaged by water, such
flooring shall be installed over a membrane with a water
permeance not exceeding 18 ng/(Pa•s•m 2) when tested
in accordance with ASTM E 96, “Water Vapor Transmission of Materials.” (See
Appendix A.)
1) Wood sleepers supporting finished flooring over a
concrete base supported on the ground shall be not less than
19 mm by 38 mm and shall be treated with a wood preservative.
1) Finished flooring shall have a surface that is smooth,
even and free from roughness or open defects.
1) A panel-type underlay shall be provided under
resilient flooring, parquet flooring, ceramic tile,
felted-synthetic-fibre floor coverings or carpeting laid over
lumber subflooring. (See Sentence 9.30.3.2.(1).)
2) Panel-type underlay shall be provided under resilient
flooring, parquet flooring, felted-synthetic-fibre floor
coverings or carpeting on panel-type subflooring whose edges are
unsupported. (See Article 9.23.14.3.)
3) Panel-type underlay shall be provided under ceramic
tile applied with adhesive.
1) Panel-type underlay shall be not less than 6 mm thick
and shall conform to
a)ANSI A208.1, “Particleboard, Mat-Formed Wood,”
b)CAN/CGSB-11.3-M, “Hardboard,”
c)CSA O115-M, “Hardwood and Decorative Plywood,”
d)CSA O121-M, “Douglas Fir Plywood,”
e)CSA O151, “Canadian Softwood Plywood,”
f)CSA O153-M, “Poplar Plywood,” or
g)CSA O437.0, “OSB and Waferboard.”
2) Panel-type underlay under ceramic tile applied with
adhesive shall be not less than
a)6 mm thick where the supports are spaced up to 300 mm o.c., and
b)11 mm thick where the supports are spaced wider than 300 mm o.c.
1) Panel-type underlay shall be fastened to the subfloor
with staples, annular grooved flooring nails or spiral nails,
spaced not more than 150 mm o.c. along the edges and 200 mm o.c.
both ways at other locations.
2) Nails for panel-type underlay shall be not less than
19 mm long for 6 mm thick underlay and 22 mm long for 7.9 mm
thick underlay.
3) Staples for panel-type underlay shall
a)have not less than a 1.2 mm shank diameter or thickness with a 4.7 mm crown, and
b)be not less than
i)22 mm long for 6 mm underlay, and
ii)28 mm long for 7.9 mm and 9.5 mm underlay.
1) Where panel-type underlay is required to be installed
over plywood, OSB or waferboard, the joints in the underlay
shall be offset not less than 200 mm from the joints in the
underlying subfloor.
1) Underlay beneath resilient or ceramic floors applied
with an adhesive shall have all holes or open defects on the
surface patched so that the defects will not be transmitted to
the finished surface.
1) The thickness of wood strip flooring shall conform to
Table 9.30.3.1.
| Table 9.30.3.1. Thickness of Wood Strip Flooring Forming Part of Sentence 9.30.3.1.(1) |
|||
| Type of Flooring | Max. Joist Spacing, mm |
Minimum Thickness of Flooring, mm | |
|---|---|---|---|
| With Subfloor | No Subfloor | ||
| Matched hardwood | 400 | 7.9 | 19.0 |
| (interior use only) | 600 | 7.9 | 33.3 |
| Matched softwood | 400 | 19.0 | 19.0 |
| (interior or exterior use) | 600 | 19.0 | 31.7 |
| Square edge softwood | 400 | — | 25.4 |
| (exterior use only) | 600 | — | 38.1 |
1) Wood strip flooring shall not be laid parallel to
lumber subflooring unless a separate underlay is provided.
2) If wood strip flooring is applied without a subfloor,
it shall be laid at right angles to the joists so that the end
joints are staggered and occur over supports or are end matched.
3) If the flooring is end matched, it shall be laid so
that no 2 adjoining strips break joints in the same space
between supports and each strip bears on no fewer than 2
supports.
1) When nails are used, wood strip flooring shall be toe
nailed or face nailed with not less than one nail per strip at
the spacings shown in Table 9.30.3.3., except that face nailed strips more than 25
mm in width shall have at least 2 nails per strip.
| Table 9.30.3.3. Nailing of Wood Strip Flooring Forming Part of Sentence 9.30.3.3.(1) |
||
| Finish Floor Thickness, mm | Minimum Length of Flooring Nails, mm | Maximum Spacing of Flooring Nails, mm |
|---|---|---|
| 7.9 | 38(1) | 200 |
| 11.1 | 51 | 300 |
| 19.0 | 57 | 400 |
| 25.4 | 63 | 400 |
| 31.7 | 70 | 600 |
| 38.1 | 83 | 600 |
| Notes to Table 9.30.3.3. | |
|
|
|
| (1) | See Article 9.30.3.4. |
2) Face nails shall be countersunk.
1) Staples are permitted to be used to fasten wood strip
flooring not more than 7.9 mm in thickness provided the staples
are not less than 29 mm long with a shank diameter of 1.19 mm
and with 4.7 mm crowns.
1) Adhesive used to attach parquet block flooring shall
be suitable for bonding wood to the applicable subfloor
material.
1) Resilient flooring used on concrete slabs supported on
ground shall consist of asphalt, rubber, vinyl-asbestos,
unbacked vinyl or vinyl with an inorganic type backing.
2) Flooring described in Sentence (1) shall be attached to the base with a suitable waterproof and
alkali-resistant adhesive.
1) Ceramic tile shall be set in a mortar bed or applied
to a sound smooth base with a suitable adhesive.
2) Panel-type subfloor to which ceramic tile is to be
applied with adhesive shall have its edges supported according
to Article 9.23.14.3.