How To Repair Rotten Masonite Siding Around Window

Step 1 clean the hardboard with a stiff bristle brush.

How to repair rotten masonite siding around window.

Scrape off flaking paint and debris from the damaged area using a paint scraper. If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top. If the masonite is already compromised scrape off the area in consideration. Here s another typical handyandy exterior project.

On discovering any of these problems fix it before it escalates out of hand. Slip in the flashing. Most small spots can simply be scraped out and filled with epoxy. Fortunately you can repair masonite hardboard siding with wood putty.

Scrub the surface of the rot or damage with a wire brush to remove loose fibers and soft spots. Once the identification has been done use a utility knife to cut through the damaged siding as accurately as possible. Promptly repair holes in masonite hardboard to prevent moisture from further permeating the siding and compromising its structural integrity. Nail it to the sidewall or glue it if nailing isn t possible.

Locate and cut the damage. Cover with cap flashing. Use a pencil to clearly identify the area. Then apply some primer over the affected area.

To deal with extensive rot around the sill or trim remove the entire section then cut a new piece to go in its place. In order to go about your repair project effectively mark out the area that has been damaged. Lift the bottom shingle and slip in the kickout flashing. The client here was told by several contractors that his masonite siding was defective and needed to be re.