INSTALLATION DETAILS
DETAIL U
CATHEDRAL CEILING
PT BASE MOUNT
SILICONE SEALANT
MOUNTING BLOCK
GALVANIZED WASHER
NEOPRENE WASHER
SHEATHING
SHINGLES
JAM NUT
NUT
WASHER
ROOF SEALANT
RAFTER
FOUR PRE UNIT THREADED
THRU-BOLT 3/8” MIN.
CAT, 2” X 4” MIN. IF RAFTERS ARE 2”
X 4”, ONE 2” X 8” SHOULD BE USED
BETWEEN RAFTERS WITH 4-16D NAILS
IN EACH END
2-16D NAILS AT END OF EACH CAT
NOTE:
Cat(s) must fit tight between rafters.
Mounting Blocks
This drawing shows the use of a mounting block to provide the watertight seal between the
mounting hardware and the roof. Metal flashing sheets can be used instead of the mounting
block.
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Summary of Contents for PROGRESSIV TUBE
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