Fix Rotted Window Sill

If you can see its edges against the window frame you should be able to pry it out as a unit.

Fix rotted window sill.

The great thing about using epoxy on a window is that you end up with something stronger than wood. Fortunately the tools and techniques needed to fix a rotted windowsill are pretty fundamental. You ll need a pry bar a claw hammer a utility knife a tape measure a circular saw and either a sharp chisel or an oscillating multitool to cut out the rotted stuff you re sure to find behind the trim. Rot that occurs deep inside of the sill is more difficult to repair.

Yes you can use epoxy to repair a rotted sill of an old window and that can actually be better than replacing the window. See below for tools and a shoppin. Dig out the rotted wood and refill the cavity using products made specifically for this type of job. Finish with a wood sealer on top of the stain where the window sill is exposed to the elements outside the house.

Before working on the sill seal off the house interior from dust. For larger sections of damage most or all the sill should be removed and replaced. You ll have to remove any rotted material so if it extends to the window trim cut out any rot you see there as well. This old house general contractor tom silva shares some tricks of the trade for installing a new long lasting windowsill.

Saw off the old sill. A circular saw with. Do so by tapping the pry bar underneath one of the nails holding. Check to see how extensive the rot has become.

Make a plumb cut flush with the sheathing along the length of the rotten sill. Sand the wood of the trim and wipe with a tack cloth to remove all the sawdust. How to repair a rotted windowsill remove the side casings. The casing comes off to clear the way for removing the old sill.

Open the window and examine the sill. Surround the damaged area with wood strips to serve as a router guide. If the casings are rotting as.