Mounting - Westinghouse AC System Installation Manual

Westinghouse Solar AC Installation Guide

3. Mounting

The examples that follow illustrate how to install Westinghouse Solar Power Systems mounting
components on composition a shingle roof.
Step 1A. Pre-drill at the pre-determined roof penetration chalk markings established in step 2 of
this section. The drill bit is held perpendicularly to the roof surface, this will ensure maximum
strength at the attachment point by securing through the most solid point of the underlying rafter.
The roof attachment points will require a minimum of 2-1/2" of rafter penetration.
Step 1B. Loosen the composition shingles directly above the pre-drilled roof penetration, make
sure to loosen and remove any nails or staples that will interfere with the Composition mount
flashing. The Composition mount flashing will extend 9" above the pre-drilled hole. Test that the
shingles are adequately loosened by "dry fitting" the comp mount flashing. Line up the hole in the
flashing with the pre-drilled hole in the roof.
Step 1C. Apply Roofing sealant. Using a caulk gun, backfill the roof penetration and apply a
liberal amount of sealant to the immediate area. Apply a circle of sealant to the puck on the
unfinished side of the Composition mount flashing. Finally, applying a horse shoe shape of sealant
above the puck will act as redundant protection if roof conditions up the slope are compromised.
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