Please take time and read through the entire instructions
prior to commencing any work.
1. Ensure normal safety precautions are taken when
suing tools and walking on roofs.
2. Do not cut any structural members in the house.
3. Measure twice and cut once.
Razor Knife, Flat Bar, Caulking Gun,
Screw Gun, Reciprocating Saw, Ladders.
- When determining location of the unit, try to place the flashing
unit on the south side of the roof, also consider potential problems
such as objects shading the unit during certain times of the day.
- Prior to starting the job, clean off the oil residue on the
- Make templates for the holes that need to be cut:
- Roof-use the outer circumference of the flashing hole for
sizing. Attach a handle and mark the size and "roof"
for easy identification.
- With a razor knife, cut a 4 inch slit through the shingles and
the tar paper at the 3 and 9 o'clock position of the flashing.
This allows for the sides of the flashing to be inserted under
- Insert the reciprocating saw blade sideways at the 3 o'clock
position and commence cutting roofing nails up and around to the
9 o'clock position. This process removes the nails that will prevent
the flashing from sliding up underneath the shingles.
- Caulk underside of flashing with the provided caulking material.
Two concentric rings of caulking material is sufficient.
- Taking care not to smear caulk on the exposed shingles, slide
flashing under tar paper and shingles and force flashing up until
the shingles come in contact with the raised portion of the flashing.
The bottom side of the flashing will be on the top of the shingles.
Secure flashing with 4 hex head screws at the 3:00, 6:00, 9:00,
and 12:00 positions, making sure that at the 3:00, 9:00 and 12:00
positions, the screws are placed under the shingles. At the 6:00
position, caulk over the screw head since it will be exposed to
the weather. Use remaining caulk to seal the areas where the 4"
slits were made and around the area where the shingles meet with
the raised area of the flashing.