How To Install Interior Window Trim This Old House. Measure and crosscut the window stool to length from 1x4 primed pine. This Old House general contractor Tom Silva installs interior window trim using hand tools.
TL5571 emanuelle v7 VINCE 5 TIPSBELLY FAT. Measure the opening of the window to determine the amount of wood needed. Install the window trim to the window opening using a nail gun.
Optionally you can also install some boards on the inside of the window box to cover up the drywall but we simply lined our boards up with the edge and then painted the drywall next to the windows to match.
Attach each long side 1x6 the same way making sure that the bottom where it meets the floor is even and level - this area will be visible and cant be covered with caulk so its the most crucial for a good fit. To determine the finished length of the stool hold the extension jamb and casing in place leaving a ΒΌ reveal between them. Cut a 45-degree angle on one end of the trim and hold it so the short end of the angle overhangs halfway or 38 in onto the jamb. First use a utility knife to cut the old caulk seams And then pry up the old wood with a crow bar of some sort.