ProfessionalWindow Sill Repair

Window sills take a beating from condensation, rain splash, and the occasional pet. When the wood goes soft, paint peels, or the sill starts to pull away from the wall, we remove the damaged material, rebuild the sill with solid stock, and seal it so water can't sneak back in.

Also known as: window sill repair, fix window sill, replace window sill, window sill replacement, rotted window sill repair, window ledge repair, window cill repair, window sil repair

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Licensed

& fully insured

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Upfront pricing

Clear, honest quotes before any work begins.

Licensed & insured

Vetted local pros who treat your home with care.

Done right

We stand behind every job until you are satisfied.

What you get

What’s included

Remove damaged or rotted window sill material
Cut and fit replacement sill from solid wood or PVC trim board
Caulk the junction with the window frame and the wall below
Prime new sill and spot-paint if needed
Check apron and interior stool for related damage while we're in

Simple & stress-free

How it works

Remove the damaged sill

We carefully pry out the old sill without damaging the window frame or surrounding trim, and probe underneath for hidden rot.

Cut and fit the replacement

We cut a new sill to match the profile and length, fit it snug to the window, and secure it properly.

Seal and prime

We caulk every joint with exterior-grade sealant, prime the new wood, and note any areas that need a finish coat.

We can help

Problems we fix

Sill paint that peels because the wood underneath is already soft and damp
Sills that have pulled away from the window frame, creating a moisture channel
Pet-damaged sills where claws have dug into the wood at the glass
Interior sills stained by condensation running from the glass

Good to know

Window Sill Repair — FAQ

Should I use wood or PVC for a replacement sill?

PVC trim board won't rot and takes paint well. It's a great choice for exterior sills. For interior sills where appearance matters more, solid wood looks more refined.

Can you fix just the surface instead of replacing the whole sill?

For surface damage only, two-part epoxy wood filler is a durable fix that won't rot. If it's soft below the surface, replacement is the better investment.

How do I prevent the new sill from rotting again?

Proper caulking at the frame and wall, exterior primer before paint, and maintaining the paint film so it doesn't crack and let water in. We'll make sure the install starts you off right.