18
c) Clean off each location of all membrane grit, dirt, and tile debris.
d) Drill the four penetration holes into the roof. If using lag bolts, be sure the
starter holes are in the center of the rafter. Because of the added difficulty of
installing on tile roofs it is sometimes much easier to use a spanner mount
across the rafters.
See Detail Q
for proper spanner installation.
e) Seal the roof penetration holes by liberally encircling the holes with
polyurethane or butyl rubber caulking compound.
f) Spread a thick coating of caulking compound on the bottom of the J-Bracket
so it will be completely covered when set in place and bolted to the roof.
Caulking compound should seep out all along the bottom edge of the J-
Bracket as the anchoring bolt is tightened into place.
g) After the J-Bracket is securely fastened to the roof, cover the head of the
anchoring bolt and the entire back portion of the J-Bracket with caulking
compound.
h) Replace as much tile as possible over the J-Bracket base as shown in
Detail
F.
A saw may be needed to cut the tile the proper length. After sizing the
tile, slide the back of it under the first tile above the J-Bracket. Be sure to
apply generous amounts of caulking compound between the sized tile, the
roof and the J-Bracket. The sized tile should overlap the anchoring bolt and
as much of the J-Bracket as possible.
i) Once all four J-Brackets are secured, caulked and re-tiled, they are ready for
the mount bases to be bolted on. Proceed with the remainder of the
hardware installation.
2. Flush To The Roof
P
ROGRESSIV
T
UBE
collectors can be installed flush to the weatherproof
membrane of a tile roof if a watertight seal can be formed between the bottom of
the collector and the membrane.
The following basic procedures should be followed when installing the collector
flush to the roof. These procedures apply to both flat and barrel tile.
a) Place the collector on the membrane in the exact location it will be anchored.
b) With a carpenter’s pencil or other suitable marker, trace the outline of the
collector onto the membrane. Do not use a sharp instrument, which might cut
into the membrane.
c) Move the collector aside.
d) Place Jiffy Seal 500, 6” wide sealing compound over the collector outline.
Start at the top of the collector outline and lay the strips.
e) Be sure the strips overlap the collector outline by at least 1 ¾”.
Содержание ProgressiceTube
Страница 57: ...57 YOUR NOTES...