Repair Water Damaged Interior Window Sill

Around all the edges including between the underneath trim and the window sill.

Repair water damaged interior window sill. Mix several drops of oil free soap with warm water until it foams. Scrub with authority using strokes parallel with the grain only. Submerge a sponge in the soapy water and squeeze out the excess. Then we used a hammer and banged popped the sill upwards being careful to avoid any further damage.

Step 3 repair the window casings. Dry the wood with a microfiber cloth. Instructions asses the damage to the window sill prep your work area sand away water damage wood stabilize remove and replace rotted wood bleach out the water stains sand and clean the remaining sill re stain the window sill clear coat the window sill. Finish removing all of the old finish with the.

Wipe down the window casings to remove the oil and dirt. Scrub the window sash with a stiff wire brush. Restoring a sill ranges from the application of toothpaste and baking soda for water stains to the more labor intensive process of repairing rotting wood with epoxy primer and wood filler. We pulled out the rest of the nails that were left behind.

After the damaged wood has been removed clean up the window casings. 2 remove soft rotten spots from the sill. A water damaged window sill can however be brought back to its best with a minimum of knowledge or know how. Using a paint scraper remove the paint from the windowsill where there is water damage.

Sand the sash by hand with a folded piece of 80 grit sandpaper. Chisel these out with a flathead screwdriver or small wood chisel.