Replace Roof Vent Pipe Flashing

Flashing against a vertical front wall as well as soil stack vent pipe and chimney flashing shall be applied in accordance with the asphalt shingle manufacturer s printed instructions.

Replace roof vent pipe flashing. 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. Existing pipe boot repair and preventative maintenance the perma boot is a gasket less two piece pipe boot repair system designed to permanently repair the most common type of roof leak the leak around the vent pipes that penetrate your roof. Pipe flashing prevents leaks at the joint where the pipe meets the roofing surface. Remove the old and clean the pipe.

Carefully remove all the shingles from the flashing. Step flashing on roof peak. How to install flashing around a vent pipe five steps to replace a vent pipe flashing 1. Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.

Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. Open vent pipes that extend through a roof shall be terminated not less than 12. Be sure to clean the outside of the pipe from old caulk that could be in the way of the flashing. Center the pipe in the flashing and push the flexible front corners up or down so that the flashing pipe is parallel to the vent pipe.

Chimney chimney repair costs 200 to 500 to repair flashing while replacing flashing costs 300 to 1 500 depending on the chimney size and type. Slide the new rain collar down over the pipe to the top of the existing collar. Sheet lead for vent pipe flashings shall weigh not less than 3 pounds per square foot 15 kg m 2 for field constructed flashings and not less than 2 pounds per square foot 12 kg m 2 for prefabricated flashings. If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.

Bend the corner flashing tightly around the corner. Slide the new flashing over the vent pipe and under the shingles above the pipe. 1 remove nails holding down shingles above the pip. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.

After the correctly sized collar has been selected.