Water Damage Window Interior Sill

Over time if a windowsill is not correctly shielded from the natural elements or if a wet mug is simply set down without a coaster the sill will deteriorate or rot.

Water damage window interior sill.

Actual footage from a job repairing water damaged window sills. The first step to take is to remove these damaged areas and to replace them. The water caused the wood to bubble up in a few places. A water damaged window sill can however be brought back to its best with a minimum of knowledge or know how.

Remove soft rotten spots from the sill. Proper repairs are achieved by removing the interior window trim and then the window unit including the exterior trim or brick molding. The sill is fiber board painted with an oil based high gloss paint. Severely damaged window sills render the entire window unit unfit for use.

At some point the original sash the wood. Eliminating the water helps prevent future issues with mold and rot in damaged walls. 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. Repair the damaged areas the most common damage that will result is a rotted or warped sill as well as warped drywall around the window.

How to repair water damage to windowsills 1. I have an indoor window sill that has been slightly damaged by water. Water could be coming in from around the window through the window frame or around the edges of the glass. Using a paint scraper remove the paint from the windowsill where there is water damage.

They have direct water exposure from the outside and sometimes condensation forms on the inside. Sand the wood with a fine grit sandpaper. Any damaged siding should be removed at this time. Moisture problems are common on wooden framed windows.

If you only see water on the windowsill when there is a lot of condensation on the window you might have a humidity problem.