Instructions / Assembly

Size
Roof Opening
(Curb Inside)
Curb Outside
Dimension
1725 14½” x 22½” 17½” x 25½”
1733 14½” x 30½” 17½” x 33½”
1749 14½” x 46½” 17½” x 49½”
2525 22½” x 22½” 25½” x 25½”
2533 22½” x 30½” 25½” x 33½”
2549 22½” x 46½” 25½” x 49½”
3333 30½” x 30½” 33½” x 33½”
3349 30½” x 46½” 33½” x 49½”
4949 46½” x 46½” 49½” x 49½”
This product designed for use on wood
constructed roofs using asphalt shingles, with
slope between 2:12 (10°) and 20:12 (60°)
All local building code requirements must
be observed when using this product.
INSTALLATION INSTRUCTIONS
CURB &
STEP FLASH KIT
Available:
2 x 4 (3½” High)
2 x 6 (5½” High)
Sun-Tek Manufacturing, Inc.
10303 General Drive
Orlando, FL 32824
407 / 859-2117
www.sun-tek.com
[e-mail]
1. Assemble curb using the supplied screws in the pre-
drilled holes.
2. Cut opening and prepare surface.
3. Attach the curb to the roof using the screws provided
through the pre-drilled holes.
4. Shingle up to the bottom of the curb and install the sill
ashing. The sill ashing should be on top of the shingle.
Attach sill ashing to curb with roong nails located as
shown in (Drawing # 5).
5. Shingle up the sides of the curb alternating shingle and
side ashing.Attach side ashing to curb with roong
nails as shown in (Drawing # 5). Do not nail through
ashing when attaching shingles to the roof.
6. Install the head ashing piece making sure it is under the
shingles above.
4.
5.
x
x
x
x
x
x
x = Nail Location
CURB O.D.
Roof
Opening
Finished
Opening
1.
Screw
3.