How to repair masonite siding with putty.
How to repair water damaged masonite siding.
If the masonite is already compromised scrape off the area in consideration.
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.
Clean the hardboard with a stiff bristle brush.
Remove the damaged area.
Scrub the surface of the rot or damage with a wire brush to remove loose fibers and soft spots.
In order to go about your repair project effectively mark out the area that has been damaged.
Locate and cut the damage.
Slightly overlap the putty onto the surrounding hardboard by 1 inch.
Here are a few tips on how to repair masonite siding.
We tear off the damaged hardboard and replace it with fiber cement 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.
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.
Scrape off flaking paint and debris from the damaged area using a paint scraper.
Pack wood putty into the hole using a trowel.