Interior Wooden Window Sill Replacement

Trace the exact shape of the sill.

Interior wooden window sill replacement. Primed finger jointed window sill moulding model 10001958 18. Cut out your new window sill with your table saw. Place your old window sill on top of your new wood. Astragal 4 backband 4 brick 13 casing set.

Insert the tip of a utility knife between the sill and the trim. If you can t salvage the old sill for a template measure the sill space and draw a new sill template on your board. Sand with an orbital sander. Next place your new window sill where your old window sill was to make sure it s the right fit.

Next paint or stain the window sill to match the surrounding woodwork. If not make adjustments as needed. Buy more than one board if you think you ll need an extra attempt. Get free shipping on qualified wood sill door window moulding or buy online pick up in store today in the building.

Place your old sill over the selected board and draw its outline with your carpenter s pencil. 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. Woodgrain millwork wm 1021 11 16 in.

When you have the exact shape you want use sandpaper to sand down the edges. First we ran a cutting blade this is my favorite caulk removing tool. Interior 2 more ways to filter. Test fit and sand until the new sill fits perfectly.

Cut out the shape using a table saw and hand saw.