How to Replace a Gable Vent

A gable vent plays a very important role in regulating heat and air flow into the attic. With time, your gable vent may wear out thus requiring you to replace it. It is very easy to replace a gable vent as long as you have the right tools and materials as well as the correct guidelines.

Step 1 - Ensure Safety

Before embarking on replacing your gable vent, your first priority should be safety. Ensure that your ladder is firm enough to support you as you climb to reach the attic. Make sure also that your roof is completely dry as a wet roof could cause you to slip and fall. Check for any loose and slippery roof shingles as well that could potentially cause an accident.

Step 2 - Remove Old Gable Vent

Climb up the ladder to remove the vent. Use the utility knife to scrape off caulk from around the vent. Take out all the nails or screws attaching the vent onto the attic. Pull the vent from the attic slowly and place it aside. Remove also the old vent framing.

Step 3 - Prepare to Install New Vent

Clean out the area where the original gable vent was located to remove any dirt and debris. Scrape off any excess caulk that may have remained on the edges of the area. Take the 2x4 wood board and build a new frame to attach into the vent opening. Install the frame between the gable end and studs by hammering it in using nails. Leave a clearance of 1/8 inch on all sides of the frame.

Step 4 - Attach Flashing

Take the building paper and attach it around the vent opening to act as flashing. The paper will prevent water from getting into the attic. Ensure that the pieces of paper on the upper side of the opening overlap those beneath them. After lining up the paper appropriately, staple it into place. You can also apply caulk underneath the paper to hold it down before stapling it onto the frame. Take the metal flashing cap and place it on top of the paper flashing at the top side of the vent opening.

Step 5 – Mount the Gable Vent

Apply caulk on the already attached building paper. Take the new gable vent and apply more caulk under its flange to help in attaching it firmly into the opening. Lift the vent and fix it into the opening, ensuring that it fits well at the top where there is the metal cap flashing. Use nails to secure the gable vent on the two opposite sides as well as the bottom side.