Press down on the surface of the sill from end to end and front to back to ensure the adhesive attachment. Turn over the marble sill and install it on the window ledge. The portions should be the size of a quarter. Siltech Innovative Windowsill Products Antique White 1/2 in. Acrylic Sanded Eased Edge Window Sill Moulding. Make sure that there aren't any glossy spots left in the marble, the paint WON'T stick to it. Siltech Innovative Windowsill Products Designer White 1/2 in. Using a 36-grit sandpaper, gently remove the glossy finish. Each piece should be the width of the window + about 3 for the sill to wrap around the window sides, or do what we did and use the existing window sills to get your exact measurements. If you have a marble table top or counters this will work great for that too. Carrara marble window sills comes in 56 and 74 lengths.

Cut off the tip of the tube to make a 1/4-inch opening with the knife.Īpply 1/4-inch thick circular portions of adhesive spaced every 6 inches between the back edge of the sill and the reference mark from end to end. Also know, can you paint a marble window sill Using this method to paint marble isn't limited to just window sills. Sills are part of the window trim, which also includes the head casing, side jambs and the apron. Install a tube of silicone adhesive in a caulking gun. A window sill is the bottom piece of trim, or the ledge at the bottom of the window. Turn over the marble sill onto a flat surface with the underside facing up. Mark a reference line along the underside of the sill where it meets the face of the wall below. Remove any debris from the window ledge with a shop vacuum or a vacuum hose on a household vacuum.įit the marble sill fully into place on the ledge. Use the wood chisel and hammer to remove a 1/8-inch deep portion below the scored line from front to back at each side the opening. Score each side of the opening from back to front at the marks with a utility knife.

Piece of marble for window sill