Cement Door Sill Repair

Position the old door sill on the new sill and trace around it.

Cement door sill repair.

Hold the new door sill in place with construction adhesive and fasteners. We ve been having some issues with water leaking into our basement under our front door. If desired protect and liven up a sill with a metal sill cover which wraps around the front of the sill. Paint or stain the new door sill.

Drive a new 3 16 by 1 inch concrete anchor into each of the holes with a hammer. We have a metal threshold over a concrete sill and our front porch is a concrete slab about 4 x6. If it fits apply liquid nails glue to the concrete and attach the threshold. Caulk around the outside of the door sill.

Lift the threshold out and drill 1 1 2 inch deep holes at each drill tip mark on the concrete. If i raise the concrete pour mounting the sill i might be able to cantilever and extend the lip of the sill about 75 1 into the air over the exterior brick landing. If it prevents the door from closing comfortably you can plane down the door or lower the threshold. Remove the old door sill from beneath the door frame.

Cut the new door sill to size and bevel the outer edge. Cut it with a hacksaw. Remove all debris from the concrete slab. If there s carpeting trim the carpet where frayed material hangs loosely.

Tap it snugly into position using a rubber mallet. Then test the threshold for fit. When the saddle is in place restore the door jamb adding calk so that it fits nicely. Lay a bead of caulk along what will be the back edge of the threshold.

The aluminum door threshold should sit level on the sill and join to it with a waterproof flexible and adhesive sealant polyurethane. 2 mix a moderate amount of liquid detergent with 1 quart of water in a. Fit the new door sill in place under the door frame. Slide the threshold underneath the doorstops and position the notches you cut around the door jambs.