Installation Instructions

General Installation Instructions
Atlas Roofing
General Installation Instructions
These instructions MUST be followed to ensure desired appearance and maximum performance.
Please note the following important features:
All Purpose
For use on new or re-roofing applications over required types of roof decks (see Roof Deck section).
Roof Deck
A properly installed and conditioned roof deck constructed of exterior grade plywood, minimum
thickness of nominal 1/2,” or alternatively 7/16” thickness APA rated non-veneer oriented strand
board (OSB) structural panel should be used, as a minimum.
Roof Deck Ventilation
Adequate ventilation under the roof deck must be provided to prevent harmful condensation in
winter and heat build-up in summer. These conditions can cause:
A.) accelerated roof weathering
B.) deck rot and attic fungus
C.) shingle distortion/cracking due to deck movement
D.) blisters
Manufacturer will not be responsible for damage to shingles as a result of inadequate ventilation.
Ventilation provisions must meet or exceed current FHA Minimum Property Standards and conform
to all building codes and regulations. To best ensure adequate ventilation and circulation of air, a
combination of vents at ridge and eaves should be used. All roof structures, especially mansard and
cathedral type ceilings, must have complete through ventilation from bottom to top. FHA Minimum
Property Standards require one sq. ft. of net free ventilation area for each 150 sq. ft. of space to be
vented; or one sq. ft. per 300 sq. ft., if a vapor barrier is installed on the warm side of ceiling, or if
at least one half the ventilation area is provided near the ridge.
Fasteners
Nails only are recommended for the attachment of Pro-Cut® Hip & Ridge shingles. Use galvanized
3/8” diameter head roofing nails long enough to penetrate through the APA rated deck panel or
3/4” into solid wood decking. (Generally 1 1/2" nails minimum).
Storage
These shingles can be damaged by careless and improper storage or handling. Keep shingles
covered and protected from weather, keep dry and reasonably cool. Do not store near steam pipes,
radiators or other sources of heat, or in direct sunlight until applied. Do not stack over 12 bundles
high.
Manufacturer is not responsible for a slight variation in color which may occur from the positioning
of the granular surfacing material used in this product. Proper application by these instructions will
help minimize any such problem. The manufacturer is not responsible for the installed appearance
by any other application method. Pro-Cut® Hip & Ridge Shingles are produced from the same high
quality materials that are used to manufacture the heavyweight StormMaster® family of shingles.
The double layer coverage method will provide a longer service life and provide a more distinct
profile. Exposure: 5 5/8 inches.
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