Installation Guide

Wide overhangs at the eaves should be
avoided as they provide large cold areas
for snow and ice build-up. A strip of
metal along the eaves helps shed ice
quickly. Sliding ice and snow are
constant hazards and should be given
primary consideration in the total
building design. Outside doors should
not be located at the bottom of a roof
slope. Entrances and all pedestrian traffic
areas are better situated beneath the
gable ends of the roof.
In regions of heavy snowfall, shingles
and shakes should be laid as a three-ply
roof and installed by competent
tradesmen according to the
recommendations given in the pertinent
sections of this manual.
Starter course for shingle roofs should
be three layers. For shake roofs, superior
construction at the eave is achieved by
using two layers of shingles and one of
shakes. Shingle or shake side lap should
be increased to 50mm. The entire roof
must be laid with the same precautions
as those taken for any other type of
wood shingle or shake roof, with eave
protection and an interlay felt between
shakes.
Care in cold weather roof design and
installation will result in a sound roof
system giving many years service during
severe extremes of winter temperatures
and snowfall.
Screen
Screen
Vented space
Insulation
Interior finish
Vented space
Half Monitor Roof
Vented space
Section
Decking
Rigid insulation
Spaced sheathing
Cedar shingles
or shakes
(applied as per
specification)
Vented space
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