How to Replace a Vapor Barrier without Damaging Brick Siding

What You'll Need
Vapor barrier roll
Seam tape

To prevent water damage to a brick wall without having to replace brick siding, you will need to replace a leaking or torn vapor barrier. Follow these steps to get the job done right.

Step 1 – Removing an Old Vapor Barrier

Examine the old vapor barrier to determine how badly damaged, or how much of it is allowing moisture to enter your wall. If it needs to be completely replaced, remove it carefully so as to avoid damaging your brick wall. For nails left driven into your wall from the previous barrier, cut them off, rather than pulling them and risking damage to your wall.

Step 2 - Preparing Your Walls

Remove any water you find on your siding with a dry towel or rag. This is an essential step in properly completing this project.

Step 3 -  Installing Your Barrier

Unroll the barrier onto the surface of your wall leaving 2 inches or more beneath your footings. Apply double barrier layers to joints.

Step 4 – Attaching and Sealing Your Vapor Barrier

To avoid shattering your brick when you nail the barrier to the brick, place the nail against the barrier and strike it hard, one time only. Apply seam tape to seams, then apply your finish.