Roof Vent Flashing Installation Instructions

After selecting an area to install from inside the building square the template between the roof rafters and outline with a marker.

Roof vent flashing installation instructions. How to install step flashing with a wall corner step three. Slide the new rain collar down over the pipe to the top of the existing collar. Bend it back so that it overlaps the corner flashing. Place the leading edge of the first panel along this line.

Select appropriate size flashing for each vent pipe through roof. The top edge of the flashing tape is trimmed evenly around the vent pipe so the new boot flashing collar can seal to the pipe without the tape in the way. Push down until base lies flush on rooftop. Following manufacturer s instructions for securing the vent the roofer will likely spread plastic roof cement on the underside of the vent place it over the hole slip the flange under the top side shingles and lay the flange over the down slope shingles.

Flashing details 19 24 flashing against vertical sidewalls 19 flashing around chimneys 20 roofing ventilation 25 27 proper ventilation. Then set the piece down. To install vent pipe flashing you will be placing the upper portion below the shingles while allowing the bottom portion that extends below the pipe to lay exposed on top of the shingles. Nail flashing only where future courses of shingles will cover.

Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent. Apply a thin bead of silicone. Install flexible collar over pipe. After the correctly sized collar has been selected.

Before sliding the new flashing over the vent pipe i apply strips of regular flashing tape to the bottom of the flashing pan. Plenty more videos t. Roof flashing installation instructions 1. Seal the underside of the flashing as shown below.

Shingles 36 89 berkshire 36 39 woodmoor woodcrest 40 44 trudefinition duration series 45 49. Next use a reciprocating saw with a rough in blade to cut the out the marked template. Using a sawzall cut any roofing nails in the area of the lower mounting plate flush with the sheathing. Measure one panel width in from the roof edge.

Hammer one nail to the. At this point chalk a line from ridge to eave. Ensure it sits flat and extends at least 8 inches above the shingles. Intake low exhaust high 25 roofing failures 28 30 how to estimate roofs 31 35 installation instructions.

You will apply a 100 exterior or marine rated silicone caulk to the top of the existing rain collar attached to the roof flashing and also to the underside of the new rain collar.