How do you fill in slab holes?
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How do you fill in slab holes?
Fill small holes where wall anchors or water pipes were removed with a cementitous grout instead of concrete that has aggregate gravel. Fill the hole to 3 inches below the surface of the floor with sand before pouring the grout mixture in the hole. Smooth the top of the mixture with the steel trowel.
How do I fill a hole in my basement slab?
Mix up a small bag of Sacrete concrete mix and fill the hole to about 1 inch under the pipe. Float it smooth, you’re done. There is no need to get carried away with a special base etc. The size and weight of the concrete patch is negligible as far as settling or shrinking is concerned.
How do you fill holes in foundation?
Mudjacking. A type of sand-cement slurry (called “mud” in the industry) can be used to fill voids under concrete slabs. This mixture of sand, cement, and water is pumped through holes drilled in a slab foundation to fill voids underneath.
What do you use to fill a hole in concrete foundation?
Dampen the hole and surrounding area with water using a spray bottle. Mix a small portion of hydraulic cement in a clean container according to package directions. Stir the cement with a putty knife until it has the consistency of thick peanut butter. Make only as much cement as you can use in three minutes or less.
How do I fill a hole in my foundation?
Tips for Filling in the Sinkhole
- Clean the area.
- Try to determine the extent of the hole by careful excavation and probing.
- Incrementally fill the depression with fill soil that has a high amount of clay and low amount of sand.
- Continue this process until the depression is filled in.
How do you fill a void under a concrete slab?
How do you fill a small hole in a concrete slab?
When the rinse water has drained away from the concrete, but the concrete is still damp, spread a thin layer of thinset mortar over the concrete. Pour in the fresh concrete immediately to fill the hole, and let that cure.
Why is there a PVC drain on my concrete slab?
If the PVC drain indicates the age of the plumbing and the house, or at least when the slab was installed, there should be a layer of poly acting as a moisture barrier in between the concrete and gravel.
How do you install a shower pan on a concrete floor?
While the concrete is still damp, spread a thin layer of thinset mortar over it, and immediately float the mud layer for the shower floor, sloped 1/4 inch per foot toward the drain. Again, the layer of thinset helps adhere the mud layer to the concrete slab. When the mud layer cures, install the shower pan, water test it, and you’re ready to tile.
Can a hole in a slab be covered with tile?
A: Michael Byrne, a veteran tile installer and consultant, and the moderator of JLC ’s Ceramic Tile forum, replies: With a hole in the slab like you describe, you have one of two conditions: The hole is to be covered up by something (such as a shower pan), or it will be covered directly with floor tile.