How To Install Window Sills Interior

Attach vapour resistant jointing.

How to install window sills interior. Start by scoring the drywall in the corners and along the window with a sharp utility knife. Insert the sill into the groove at the window fig. Mark a reference line on the wall on each side of the window.

Hold a scrap piece of your window trim casing against each window side and at your reveal mark. Mark 3 16 or a reveal mark on your window jambs. As this acts a shelf traditionally it extends out past the edge of the window on either side and 2 5 cm 1 inch in the front.

To the depth measurement add 2 5 cm 1 inch. Make sure to have an angle of no less than 5 degrees this will ensure that the water runs off smoothly fig. You want the surrounding drywall on the sides intact so be careful as you dig it out with a crow bar.

Last but not least use an l square to mark the depth of the notches on the sill and cut them with a jigsaw. Then remove all the nails and corner bead. Determine your window sill horn overhang.

Please consider subscribing window sill nosing. The width is the left to right measurement. Install the component with the accompanying washers.

I typically use for an overhang. Next center the pvc sill on the window and mark the ends of the window frame on it. First calculate the shelf or bottom of the interior sill.