Concrete Window Sill Repair

At one spot there is a circa 10cm by 6cm section where the concrete is crumbling away to depth of maybe 1cm in the middle of the area.

Concrete window sill repair.

Repairing a concrete window sill could appear to be a major job that s far beyond the skills of the average diyer but with the proper knowledge tools material and preparation you might find it s worth considering having a go yourself unless a complete rebuild is necessary. Masonry window sill repair after removing the loose material and got it clean i used toupret touppreith f in several layers its not cheap but it hold. As this may. 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.

Apply a 3 8 inch thick layer of concrete all over the sill with a trowel following any contours to mimic its original shape. Use a paintbrush to apply concrete bonding agent to the entire window sill. 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. Resurface stained or cracked concrete window sills with new concrete.