How To Fix Cracked Window Sill

How to repair weathered wood sills.

How to fix cracked window sill.

How to repair a concrete window sill preparation. We pulled out the rest of the nails that were left behind. Step 2 remove loose wood. Resist the urge to keep touching and fiddling with the look of the smoothed caulking you will probably make it look worse.

Sand the sill with 100 grit paper to smooth the surface for priming. With any luck this re work may keep the crack closed up. Step 1 clean the surface. Scrape the sill with a metal scraper to remove chipped or peeling paint.

Use a random orbit sander for the best results. Step 1 use a putty knife or a paint scraper to remove the peeling and cracked paint. Remove any existing paint and dirt first from the area by scraping and wiping the area down with a rag moistened with tsp. It is important to prevent water moisture from getting under your window this is a short video to show how easy it is to seal up the cracks in your concret.

Then we used a hammer and banged popped the sill upwards being careful to avoid any further damage. Dig out damaged wood image copyright. Remove as much concrete debris as possible. Fix any small or medium cracks in your concrete window sill with caulk.

Using a small putty knife starting at the window smooth the caulking flush to the sill. Check for sill movement such as a crack where one side has settled or is down farther than the other side causing a crown and a crack. Rub the surface of any and all damaged areas with a stiff brush. If there is not one there you may want to push up the cracked sill and install a skirting board to help support the sill.

Sometimes a skirting trim or board is installed under a sill like this to help support the sill. First we ran a cutting blade this is my favorite caulk removing tool around all the edges including between the underneath trim and the window sill. Fit the narrow tip. Sand the surface with a 100 grit sanding sponge.

Do this before trying to fill the crack with any kind of filler. Finishing the mortar joint. Any wood that is loose or rattling.