Proper Roof Vent Flashing

In simplest terms a new vent pipe boot flashing is slid over the top of the existing one and the top edge of the pan is lapped beneath the overlying shingle course.

Proper roof vent flashing.

Inside diameter black new construction or reroof thermoplastic vent pipe roof flashing model pb 312 4bk 19 97 19 97. Vent pipe flashing fits over flues or pipes. Because the vent flashing boot s rubber collar is typically thin and seals only to the vent pipe guertin adds an additional seal with epdm flashing tape with a butyl adhesive backing. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

The shape of vent flashing is typically a cylinder with a wide flange at the base which is lapped into the shingles as the roofing is installed. Be sure to like and subscribe in order to help me bring you more helpful videos filled with tips and tricks i ve learned over the years. 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. Open valleys have metal flashing to protect this critical area of the roof.

One common method is to lay the edge metal under the eaves membrane and over the rake. The edge of the roof has thin metal flashing that helps water drip off. Free delivery with 45 order. Simply put roof flashing is any piece of sheet metal that forms a joint between the roof and objects that protrude from the roof such as dormers chimneys and pipes in such a manner that they prevent water from leaking through the joint.

Virtually every house in america has at least one vent pipe or other penetration on the roof. Mike guertin describes his method for flashing roof vent boots a main source of roof leaks. Set your store to see local availability add to cart. Drip edges are strips of flashing material that run along roof eaves and rakes to prevent water from seeping under the finished roof along its edges.

Plenty more videos t. There s no need to lace the flashing pan into the shingles since the boot and bell of the new flashing will shed water around the damaged part of the old one.