Installation
Instructions
ROOFING
Metal
roofing should be installed on a solid wood deck, minimum 7/16″ thick.
Roofing can also be installed in 2″ x 4″ strapping, recommended 16″
on center. Number 14 screws must be used when fastening into 7/16 OSB.
A minimum of 15 pound roof felt must be used under metal roofing to prevent
condensation.
Place first sheet at edge of roof away from prevailing wind, check for
plumbness. Over hang roof sheets ¾″ to 1″ at eave.
Screw panels down in a uniform pattern 24″ on center up roof slope on a
solid deck or at each purlin on a strapped roof. On TR 36″ panels, place
screws in flat pan beside every major rib. For the MD 36″, longer screws
should be placed in the top of the overlap, the rest of the screws placed in
flat pan beside every other major rib. All screws at lap should be screwed
firmly in place first. Finish screwing panel, working from lap across the sheet.
Note, all screw holes should be predrilled.
Gable trim must be installed before the ridge cap. Screw the gable trim down
placing fasteners through the 1″ leg of the gable trim. A bead of butyl
sealant should be used between gable leg & roof panels to prevent leaking
around the screws.
Install ridge cap using 1 ½″ screws placing screws through the top of
every major rib. Each section of the ridge cap should be overlapped by a minimum
of 6″. The use of butyl or urethane sealant on the overlap is recommended.
The closure strip is installed under the ridge cap approximately a ¼″
in from the edge of the cap, so that the screws will catch the closure strip. At
eave, place the closure ¼″ to ½″ in from the edge of the roof.
Place screws on each side of the major ribs, screwing through the closure strip.
When ridge venting is required, the use of closure vents will give 9 square
inches of net free air per lineal foot of ridge with the TR 36″ & 8
square inches of net air for our MD 36″ profile.
The closure vent is installed in the same way as a regular closure. You must
use a ridge cap with a 3 5/8″ leg to cover the 3″ wide closure vent.
TRIM
USE LOCATIONS
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