Watkins Sawmills Ltd.
Building Products Listing Program
- Watkins Sawmills Ltd.
- Wood Shakes and Shingles
- Mission, BC Canada
- B1150
- B1150
- December 14, 2023
- December 14, 2023
- N/A
-
CSSB – 97
Grading and Packing Rules for Western Red Cedar Shakes and Western Red Cedar Shingles of the Cedar Shake and Shingle Bureau.
CSA 0118.1
Western Red Cedar Shakes and Shingles.
Testing Application Standard (TAS) 202
Criteria for testing Impact and Nonimpact Resistant Building Envelope Components Using Uniform Static Air Pressure.
Testing Application Standard (TAS) 203
Criteria for Testing Products Subject to Cyclic Wind Pressure Loading. -
Watkins Sawmills Ltd. Cedar Shingles of the following type:
•18-inch Grade 1 Sidewall Shingles -
Products are labeled per bundle with the following information:
a)Company name and location.
b)Product type.
c)CSSB-97 / CSA 0118.1 Grade 1
d)QAI Listing File Number (B1150)
e)QAI logo shown here:
-
Models:
Watkins Sawmills Ltd. cedar sidewall shingle products are available in the following product types per CSSB – 97 / CSA 0118.1 Grade:
TYPE
PRODUCT
MINIMUM BUTT THICKNESS
WIDTH
LENGTH
GRADE
Shingle
Sidewall
3/8-inch
(10 mm)
3 – 12 inches
(76 mm)
18-inch
(457 mm)
Grade #1
Ratings:
Watkins Sawmills cedar sidewall shingle compliant TAS 201, TAS 202, TAS 203 configurations1,2:
SHEATHING3
APPROVED WRB4
APPROVED SIDEWALL SHAKE TYPE
MINIMUM THICKNESS
MAXIMUM EXPOSURE
FASTENING
TAS 202 / TAS 203 DP5
Minimum 5/8-inch (16 mm) thickness plywood
Any
Grade #1 Cedar Shingle of Minimum 3-inch (76 mm) to maximum 12-inch (305 mm) width, 18-inch (457 mm) length
3/8-inches (10 mm) butt thickness
7 inches
(178 mm)
A minimum of two (2) 5D ring shank box nails of minimum 1-3/4-inches (44 mm) length for 3 – 8-inch (76 – 203 mm) width products.
8-12-inch (203 – 305 mm) width products require minimum three (3) fasteners.
spaced maximum 4-inch (102 mm) on center.
-140 psf
(20.9 kPa)
Note 1: Watkins Sawmills is intended for installation over minimum 5/8-inch (16 mm) thickness code complying plywood sheathing. The noted sheathing provides impact resistance in areas prone to wind-borne debris (high-velocity hurricane zones).
Note 2: Wall stud type and spacing is to be in accordance with the applicable code requirements and is outside the scope of this listing.
Note 3: Attachment of sheathing to the underlying studs is to be in accordance with the applicable code requirements and is outside the scope of this report.
Note 4: Water-resistive barrier (WRB) is required. Type and installation shall comply with the applicable code.
Note 5: DP = Design Pressure, determined in accordance with TAS 202 static pressure evaluation with a factor of safety of 1.5 applied, and subsequent TAS 203 cyclic evaluation. Rating is negative direction only, due to requirement for sheathing element resisting positive pressure direction.
The materials, products or systems listed in this directory have been qualified to bear the QAI Listing Mark under the conditions stated with each Listing. Only those products bearing the QAI Listing Mark are considered to be listed by QAI.
The standard herein listed is the currently accepted version within the relevant certification scheme, code or other requirements unless otherwise noted. Transition periods may apply. Upon request, QAI will provide information about the validity of any of its certifications.
No warrantee is expressed or implied, and no guarantee is provided that any jurisdictional authority will accept the Listing found herein. The appropriate authorities should be contacted regarding the acceptability of any given Listing.
Visit the QAI Online Listing Directory located at www.qai.org for the most up to date version of this Listing and to validate that this QAI Listing is active. Questions regarding this listing may be directed to info@qai.org. Please include the listing number in the request.
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