Project Difficulty:
Easy Estimated
Project Time: A few hours, including drying time
Tools and Materials:
Epoxy
Putty knife
Scrap board
Primer
Paint
Sandpaper
Chisel
It's especially important to repair damaged wood before refinishing it. Not only will any paint job look bad when applied over it, but if the wood was water-damaged, the paint also won't adhere properly.
Before repairing water-damaged wood, eliminate the source of the leak, which may be a gutter or downspout. Some window sills and moldings, available in stock sizes, can be replaced more readily than they can be repaired.
There are many exterior fillers and wood putties available which can repair damaged wood. One of the best systems for filling severely damaged wood involves a two-step process using a proprietary compound: a thin liquid preparation, poured on the wood to harden it, is followed by application of a two-part epoxy filler. This epoxy filler is stronger than wood and, once cured, can be sanded, drilled, primed, and painted.
1.
Mix the Epoxy
Mix the epoxy components on a board according to the manufacturer's instructions--typically one part resin to one part hardener. Epoxy works by heat reaction, so don't mix too much of it in a small container or the heat may build up and harden the epoxy before you can use it. (Fig. 1)
2.
Apply the Epoxy
Using a putty knife, apply the epoxy filler to the damaged area of the wood. Work quickly, because once the epoxy begins hardening, you'll no longer be able to spread it. (Fig. 2)
3.
Shape the Epoxy
Shape the epoxy with a putty knife until it matches the form of the original wood. When it begins to harden, stop working.
After the epoxy has cured completely, sand it to shape; use a chisel to shave the cured epoxy, if necessary.
Now you can prime and paint the area for a perfect finish. (Fig. 3)
