Repair Cracked Concrete Window Sill

Window sills are designed to divert water away from the house and as a result they get a battering from the weather over time wooden sills can rot and concrete window sills can develop cracks.

Repair cracked concrete window sill.

How to repair sandstone window sills. Puddles of water collecting on the window sill. Resurface stained or cracked concrete window sills with new concrete. Use a paintbrush to apply concrete bonding agent to the entire window sill.

Worn or loose joints. Stone windowsills add old world charm to many buildings. As this may. If sills are sandstone the stone tends to deteriorate with age exposure to rain snow and freeze.

With concrete and slate sills the exposure to the variations in temperature can cause cracks and crumbling water penetration can also weaken the joints. Cracked or worn paintwork. Rub off flaking paint or loose concrete along the crack with the wire brush and make sure to clean out any moss that may be growing inside. Repairing a woden sill.

Here is a site that will help with replacing a concrete sill l that is not broken off all the way under the window. Apply a 3 8 inch thick layer of concrete all over the sill with a trowel following any contours to mimic its original shape.