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.
How to fix cracked window sill.
We pulled out the rest of the nails that were left behind.
Dig out damaged wood image copyright.
How to repair weathered wood sills.
Using a small putty knife starting at the window smooth the caulking flush to the sill.
Sometimes a skirting trim or board is installed under a sill like this to help support the sill.
How to repair a concrete window sill preparation.
Any wood that is loose or rattling.
You will need to raise one side or the other with plastic.
Remove as much concrete debris as possible.
Remove the excess material build up on the putty knife.
Sand the surface with a 100 grit sanding sponge.
Finishing the mortar joint.
Resist the urge to keep touching and fiddling with the look of the smoothed caulking you will probably make it look worse.
Switch to a 220 grit sanding sponge to finish off with a very smooth surface.
Step 1 use a putty knife or a paint scraper to remove the peeling and cracked paint.
Rub the surface of any and all damaged areas with a stiff brush.
Do this before trying to fill the crack with any kind of filler.
Use a random orbit sander for the best results.
Sand the sill with 100 grit paper to smooth the surface for priming.
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.
Fix any small or medium cracks in your concrete window sill with caulk.
Step 2 remove loose wood.
Scrape the sill with a metal scraper to remove chipped or peeling paint.
Step 1 clean the surface.
Then we used a hammer and banged popped the sill upwards being careful to avoid any further damage.
Fit the narrow tip.
Remove any existing paint and dirt first from the area by scraping and wiping the area down with a rag moistened with tsp.