How To Repair Water Damaged Masonite Siding

On discovering any of these problems fix it before it escalates out of hand.

How to repair water damaged masonite siding.

Then apply some primer over the affected area. Pack wood putty into the hole using a trowel. In order to go about your repair project effectively mark out the area that has been damaged. In most cases the original layer of building paper or housewrap at the bottom of the wall was enough to prevent water infiltration and damage beneath the siding.

The sheathing and framing sometimes need repairs too but that is less common. Once the identification has been done use a utility knife to cut through the damaged siding as accurately as possible. Locate and cut the damage. How to repair masonite siding with putty.

Use a pencil to clearly identify the area. The repair is simple if you follow the details in the illustration above. Slightly overlap the putty onto the surrounding hardboard by 1 inch. Here are a few tips on how to repair masonite siding.

Scrub the brush around the hole to dislodge dirt and debris. Scrub the surface of the rot or damage with a wire brush to remove loose fibers and soft spots. If the masonite is already compromised scrape off the area in consideration. Scrape off flaking paint and debris from the damaged area using a paint scraper.