You thought you had the problem resolved when you hired a contractor to paint your wood siding. But, days after the contractor is finished you notice that your new paint job is bubbling and peeling off. The coloring and texture aren't consistent and some parts of your wood siding are dark while other parts are light. Instead of spending more money on a contractor, fix the problem yourself and end up with painted wood siding that you'll be proud of for years to come.
Loosen the wood siding's old paint with a heating gun. Wait for the paint to steam and bubble. Use a paint scraper to remove the bubbling paint, then apply the heat gun to another part of the wood siding.
Use a pick to remove the caulk between the wooden boards. Find any board on the siding that's loose, then use nails and a hammer to straighten them out. Use a wood sander to smoothe the siding.
Inspect for holes and dents in the wood, then fill them in with putty or epoxy. Use epoxy to fill holes and cracks if the putty you're working tends to come lose over time. Use caulk for smaller holes and cracks. Apply primer to exposed nails (See Tips below).
Put wood preservatives on the remainder of the wood siding and wait for it to dry.
Examine the wood siding after the preservative has dried to check for new cracks. Fill them in with silicone caulk and apply silicone caulk over the nail heads. Spread alkyd primer all over the wood siding and wait for it to dry.
Apply two coats of paint to your wood siding. Use a good paint brush. Sink the bristles into the paint container, then brush it against container's side to remove extra paint. Bring the paint brush to the wood siding and paint from left to right. Start at the top board, and work your way down. Complete each single board before moving to the lower one. Paint vertically from top to bottom if the boards on the siding are vertical rather than horizontal.