How to Anchor a Shower Threshold to Cement

Shower thresholds help keep water where it belongs - in the shower rather than the floor. They often work in conjunction with door sweeps to keep water under control when the door is opened after a shower. In some cases, the threshold is glued into place with an adhesive. Over time, chemicals can erode the adhesive and the threshold will start to leak. To prevent this from happening, anchor the threshold with screws to the shower curb. If your shower curb or pan is made of cement, it is still possible to use screws, you just need to use the right kind of anchor.

Tape measure
Threshold
Hacksaw
Marker
Hammer drill with masonry bit
Safety glasses
Vacuum
Concrete screws
Screwdriver
Silicone caulk

Instructions

- 1
  Measure the curb or shower base where you will install the threshold. If your threshold is longer than the curb, trim it down to size with a hacksaw.
- 2
  Lay the threshold on the curb and mark screw holes on the curb. Remove the threshold and set it aside.
- 3
  Use a hammer drill fitted with a masonry bit to make the anchor holes. Use a bit that is slightly smaller than the anchor. Vacuum away all debris and clear as much dust from the holes as possible.
- 4
  Set the threshold back on the curb, lining up the holes. Insert concrete screws through the holes with a screwdriver. Make sure they are snug, but do not over-tighten, otherwise you may damage the threshold.
- 5
  Lay a bead of silicone caulk on either side of the threshold to seal it from moisture. Let the silicone dry completely before using the shower.

How to Build a Custom Frame for a Bathroom Beveled Mirror

How to Build a Bathtub Mount

Bathrooms