How To Repair Water Damaged Masonite Siding

If the masonite is already compromised scrape off the area in consideration.

How to repair water damaged masonite siding.

Once the identification has been done use a utility knife to cut through the damaged siding as accurately as possible. How to repair masonite siding with putty. In order to go about your repair project effectively mark out the area that has been damaged. Use a pencil to clearly identify the area.

Here are a few tips on how to repair masonite siding. 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. Remove the damaged area.

On discovering any of these problems fix it before it escalates out of hand. The repair is simple if you follow the details in the illustration above. Locate and cut the damage. Scrub the brush around the hole to dislodge dirt and debris.

We tear off the damaged hardboard and replace it with fiber cement siding. Clean the hardboard with a stiff bristle brush. Slightly overlap the putty onto the surrounding hardboard by 1 inch. Then apply some primer over the affected area.