How To Remove A Window Sill Inside A Building?

This guide explains how to remove and replace rotted window sills with ease. With the right tools and instructions, it can be a straightforward process. The steps involve carefully removing the old sill using a hammer and pry bar before cutting a new one to the right size. Paint or caulk should be removed before installing the new sill.

To begin fitting a new window sill, you will either need to remove the existing sill or cut it down. To do this, gather all materials, remove the broken old window sill, and install it with nails and caulk to secure it in place. This process is suitable for intermediate builders.

After opening the window, use a utility knife to free the old sill by cutting through layers of caulk, paint, and glue. Use a putty knife or oscillating multitool blade to help the sill loosen up even more. Use a prybar or chisel to slowly pry the sill up, and a hammer also helps. Keep the sill in one piece so you can use it as a model when working on the outer sill from the inside.

Open the casement and unscrew all screws with the cordless screwdriver. Position the sill, drill pilot holes through the holes in the sill into the masonry below, then remove the sill and drill and plug the masonry. Run a knife along the edges to loosen the caulk and separate the sill from the window and the drywall.

In summary, replacing a window sill is a simple process that requires careful removal of the old sill, painting or caulk, and installing the new one. It is recommended to use a hammer and a cordless screwdriver to work properly on the outer sill from the inside.