Interior Wooden Window Sill Replacement

Buy more than one board if you think you ll need an extra attempt.

Interior wooden window sill replacement.

Insert the tip of a utility knife between the sill and the trim. Then we used a hammer and banged popped the sill upwards being careful to avoid any further damage. Cut out your new window sill with your table saw. Test fit and sand until the new sill fits perfectly.

Next paint or stain the window sill to match the surrounding woodwork. Around all the edges including between the underneath trim and the window sill. Depending on how the sill was installed there will likely be a 1 4 inch by 1 2 inch piece of profiled wooden trim. Astragal 4 backband 4 brick 13 casing set.

First we ran a cutting blade this is my favorite caulk removing tool. We pulled out the rest of the nails that were left behind. Place your old window sill on top of your new wood. Trace the exact shape of the sill.

If not make adjustments as needed. Next place your new window sill where your old window sill was to make sure it s the right fit. Sand with an orbital sander. If you can t salvage the old sill for a template measure the sill space and draw a new sill template on your board.

When you have the exact shape you want use sandpaper to sand down the edges. Place your old sill over the selected board and draw its outline with your carpenter s pencil. Cut out the shape using a table saw and hand saw. Primed finger jointed window sill moulding model 10001958 18.

Place your old window sill on top of your new piece of wood and use a pencil to trace the exact shape onto the wood.