Instructions / Assembly

Tools needed:
Reciprocating saw or jigsaw
Tin snips
Roofing knife
Pencil
Roof cement
Crow bar
Hammer
Roofing nails
Builder's Best Black Metal, Galvanized, and Aluminum Roof Caps
Roof Caps with Collars
3. For roof caps without a collar, insert the duct through the opening and run the duct back to the source.
Trim the duct parallel to the roof so that no more than ¾" of the duct projects thru the surface of the
roof. Trim the duct parallel to the roof pitch. Secure duct to the roof following the duct manufacturer’s
recommendations.
1. From attic side of roof, determine the hole that will need to be cut. Hole should be located between two
trusses or rafters and at least 2' away from any chimney, roof valley or other vent pipes. In the center of
the hole, drive a large nail thru the roof sheeting so that the nail will be visible from the roof.
4. Preparing the shingles: Lay roof cap into place, trace the outline of the flange onto the shingles. The
outline will be used as a reference for roof nail removal and shingle trimming.
¾"
Max
Roof Caps Flush (no collar) Roof Caps without screens
(Screens should not be used with dryer venting.)
2. From outside on top of the roof, use the protruding nail as a center. Cut a hole approximately ¼" larger
in diameter than the duct or collar being installed.
Tools needed:
Reciprocating saw or jigsaw
Tin snips
Roofing knife
Pencil
Roof cement
Crow bar
Hammer
Roofing nails
Builder's Best Black Metal, Galvanized, and Aluminum Roof Caps
Roof Caps with Collars
3. For roof caps without a collar, insert the duct through the opening and run the duct back to the source.
Trim the duct parallel to the roof so that no more than ¾" of the duct projects thru the surface of the
roof. Trim the duct parallel to the roof pitch. Secure duct to the roof following the duct manufacturer’s
recommendations.
1. From attic side of roof, determine the hole that will need to be cut. Hole should be located between two
trusses or rafters and at least 2' away from any chimney, roof valley or other vent pipes. In the center of
the hole, drive a large nail thru the roof sheeting so that the nail will be visible from the roof.
4. Preparing the shingles: Lay roof cap into place, trace the outline of the flange onto the shingles. The
outline will be used as a reference for roof nail removal and shingle trimming.
¾"
Max
Roof Caps Flush (no collar) Roof Caps without screens
(Screens should not be used with dryer venting.)
2. From outside on top of the roof, use the protruding nail as a center. Cut a hole approximately ¼" larger
in diameter than the duct or collar being installed.