How To Repair Rotten Masonite Siding Around Window

Once the identification has been done use a utility knife to cut through the damaged siding as accurately as possible.

How to repair rotten masonite siding around window.

Cover with cap flashing. To deal with extensive rot around the sill or trim remove the entire section then cut a new piece to go in its place. 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. Locate and cut the damage.

Scrub the surface of the rot or damage with a wire brush to remove loose fibers and soft spots. Use a pencil to clearly identify the area. If the masonite is already compromised scrape off the area in consideration. Promptly repair holes in masonite hardboard to prevent moisture from further permeating the siding and compromising its structural integrity.

Then apply some primer over the affected area. Most small spots can simply be scraped out and filled with epoxy. If there s damage to the sash itself your best bet is to have it rebuilt by a specialty contractor to ensure that the job gets done right. The client here was told by several contractors that his masonite siding was defective and needed to be re.

Lift the bottom shingle and slip in the kickout flashing. Fortunately you can repair masonite hardboard siding with wood putty. Here s another typical handyandy exterior project. Nail it to the sidewall or glue it if nailing isn t possible.

Slip in the flashing. Here are a few tips on how to repair masonite siding. The good news is that replacing the wood around a window doesn t have to be an expensive or complicated fix. Scrape off flaking paint and debris from the damaged area using a paint scraper.