How to Fix Vent Pipe Flashing 

Appliance chimneys and vent pipes are often sealed with metal flashing to make sure that no leak will occur. However, the metal flashing might eventually need replacement due to wear and tear. Pitched roof vents are often flashed using a flat metal sheet, usually copper or aluminum, specially cut in order to fit around the pipe as well as a protective collar, which fits around the base. Flat roofs flashing often covers the entire vent and it also has a pipe case that slides on over a chimney and a flat base as well. While replacing either type of metal flashing is fairly easy for some, it’s still imperative that you hire a professional residential roofing contractor because they have the training, skills, knowledge and expertise to get the job done right the first time. Aside from that, they are also readily available when it comes to the most specialized tools and up to date equipment. Therefore, if you want to make sure that the repair or replacement of your flashing is done right, make sure that you only hire professional contractors in Nashville TN with many years of experience.


Furthermore, if you still want to do the repair or replacement yourself, make sure that your replacement metal flashing is certainly the same diameter and type as the old metal flashing. Below, you will be able to learn an important safety procedure to repair or replace a vent flash in the most proper manner.

According to an expert roofer, you should make sure that you wear quality working gloves when you work on repairing or replacing the metal flashing since the edges of the metal flashing are sharp and can be severely harmful if you are not knowledgeable or experienced enough on how to repair or replace it.

To repair or repair a vent flashing, you should:

  1. Remove the shingles on the area of the roof above the chimney. Lift the shingles using a pry bar, but be mindful not to damage them since you’ll have to put the shingles back to cover the newly replaced flashing. If you happen to break a piece of shingle, it will be another hassle to you since you will need to find a new one in order to replace it.
  2. Remove the metal flashing by inserting a pry bar blade under its edge and lever the pry bar on a scrap wood block in order to lift the metal flashing.
  3. Lift the metal flashing up over the vent pipe. You must be very careful not to knock the vent pipe out of place. After that, if there are any nails left around the pipe, pull them out and fill the holes with roof cement.
  4. Set the new metal flashing over the vent pipe, with the flashing’s productive collar aligned the same way as the old one. Next, nail down the metal flashing using a 6d galvanized roofing nails. After that, use a roof cement to cover all the nail heads. You should also apply more roof cement in order to seal the protective collar’s base.
  5. Put the shingles back and nail those using roofing nails and cover the nail heads with roof cement.