How do you sand down concrete?
Quick Answer
To sand down concrete, remove any coating, seal the cracks and joints with an epoxy filler, attach metal-bonded diamond discs to a grinder, and sand the surface of the concrete. Start with a 30- or 40-grit diamond disc, and slowly increase the grit until you reach the desired finish.
Continue ReadingFull Answer
- Remove the concrete coating
If the concrete is coated, attach a 16- or 20-grit metal-bonded diamond disc to a floor polisher or handheld grinder. Sand off the coating.
- Fill in the gaps
Apply a semi-rigid filler such as an epoxy filler. Let the filler cure before proceeding.
- Sand the concrete
Attach a 30- or 40-grit metal-bonded diamond tool to the grinder, and sand the surface of the concrete. Once the entire surface is sanded, change the diamond disc to an 80-grit one, and sand the floor again. Repeat the process with a 150-grit metal-bonded diamond tool.
- Make the concrete denser
Apply a specialty chemical hardener to the concrete.
- Polish the concrete
If you want, continue upgrading the sanding discs until you achieve a glossy finish. Switch from a metal-bonded disc to a resin-bond one. Attach a 100-grit tool to the grinder, and sand the surface. Repeat the process with 200 then 400, 800, 1,500 and 3,000 grits.
Related Questions
-
Q:
What is stainable wood filler?
A: Stainable wood filler can be colored with a penetrating dye after it has been used to repair defects in a wood surface. Wood filler is made of various mate... Full Answer >Filed Under: -
Q:
How do you know how much cement you need?
A: The ratio of cement by volume for standard concrete is one part Portland cement, three parts aggregate and three parts sand. General purpose mortar require... Full Answer >Filed Under: -
Q:
What are concrete mixing ratios?
A: Concrete mixing ratios are the formula for calculating the correct amount of each ingredient used, including water, cement, sand and aggregate, to produce ... Full Answer >Filed Under: -
Q:
What are the mix ratios for cement and sand?
A: The basic mix ratio for concrete is one part water, two parts cement and three parts sand. An alternative ratio is one part cement, two parts sand and thre... Full Answer >Filed Under:
You May Also Like
-
Q:
What are the advantages of buying an acrylic tub shower versus a fibreglass tub shower?
-
Q:
What is the standard bathtub measurements?
-
Q:
What is the average cost of siding?
-
Q:
How do you estimate the cost per square foot to build a new house?
-
Q:
What are some types of pyroclastic materials?
-
Q:
What are roof baffles?
