HomeMy WebLinkAboutFile Documents.233 W Hallam St.0077.2019 (11).ARBK Koru 223 E Hallam
Vendor Supplied
Cedar Specifications
A. Cedar Siding Specifications:
I. 1/2x8 A/Better Vertical Grain- NLGA 200-b or WCLIB 106-a
II. WRCLA Standard Grading Rules
III. Kiln Dried to 7-14% Moisture Content
IV. Dimensional Stability- 1/4” +/- shrink or swell
V. Western Red Cedar (Thuja Plicata)
VI. Bevel Lap
VII. 6’-20’ Lengths (odds/evens)
VIII. Weight: 360 to 385 kg/m3 & specific gravity .30-.35g/cm3
IX. WWPA- Flame Spread Rating 69, Class B; Smoke Developed Index 137 (Exhibit A)
X. Finish:
1. None
B. Storage & Handling:
I. Shrinkage Characteristics: This is a natural product and will shrink or swell depending
on climate. Western Red Cedar has excellent dimensional stability due the low wood
density and low shrinkage factor compared to other species.
II. Packaging/Storage: All materials will arrive in paper wrapped units. Store materials in
a safe area, away from construction traffic. Once the material is received and put in the
area which it will be stored to acclimate, remove the crating to help with the
acclimation process. Acclimation procedures: Always keep the wood dry and stored
indoors, ideally in a climate controlled environment. Stack the siding off the ground
and under cover. If the wood is to be stored over damp concrete, place a moisture
barrier under the siding. Siding should be 102-152mm above the ground with air
circulating freely around and throughout the stack. The material will typically ship with
04/11/2019
Koru 223 E Hallam
Vendor Supplied
Cedar Specifications
a moisture content of 7-14%. Once the material has acclimated for 2 weeks it will be
ready to install.
III. Handling: This material is extremely fragile. Once the material has acclimated limit
the steps needed to install. Ideally it will go from the unit right on to the wall.
Additional handling will lead to damage and possible shortage in materials.
04/11/2019