Replace Interior Window Sill

You may also need to pry away trim material known as side casing.

Replace interior window sill. The most important is not to damage your walls window glass while doing dismantle works. Remove side window trim using the putty knife and pry bar. Next cut underneath the window sill to free the sill from the trim board under it.

Tap the sill in place with the mallet. Use a piece of wood between the crowbar and wall to avoid extra damage. Set it aside for later reattachment.

Use the crow bar or chisel to slowly pry the windowsill off the window. Wedge the pry bar under the sill and try to loosen the nails or sill. Chop out the remaining ends of the old sill with a hammer and inch wide chisel.

Repairing window sills isn t a hard diy and i try to share simple ways to make diy improvements to your home. The first thing to do is get rid of the old sill and this can easily be done by prising it out using a hammer and crowbar. The first step for how to replace an interior window sill is using your utility knife to cut the caulk between the window sill and the trim.

A technician should have a wide range of equipment needed to replace interior window sills including chisel hacksaw hammer drill jigsaw putty knife respirator and others. Keep the sill in one piece so you can use it as a model when cutting the new sill. Hook a pry bar onto the protruding screw heads and pry the sill from the window frame.

Next you will measure out the sill using the old sill as a template if you managed to remove it in one piece. Use end nippers to cut away any old nails that protrude into the sill space. Mark out the sill and decide on the wood.