Pour about one tablespoon of water onto the floor then let it sit for 10 minutes or so.
How to sand concrete floor for stain.
There s a very simple test you can perform to determine whether you should sand concrete before staining.
Even if the surface seems rough and porous it may still need to be sanded.
This video shows the steps that must be taken in preparation for staining concrete floors.
Rinse the floor thoroughly.
Steps to staining an interior concrete floor.
For acid staining use a concrete etch and cleaner to prepare the surface and rinse well.
Sand the floor completely 2.
Since the concrete is old and you may not know for.
Concrete must be porous enough to accept water.
After the first pass go over the floor with a fine or superfine sandpaper disc to finish the surface.
This includes removing carpe.
Tips on how to stain concrete floors.
Which you can do with a rented floor sander or floor buffing machine with the sanding pads.
Spray on the acid stain with a backpack sprayer.
Then 2 hours after the last coat neutralize the acid with tsp and water 5.
Repeat sanding as necessary until the sanding is complete.
Examine the concrete floor to ensure you have removed any paints stains or other coatings.
You can apply multiple coats waiting 2 3 hours in between.
Clean the area of dust with a broom and dustpan after finishing.
Wash rinse the floor 3.
Strip and remove all previous sealers paints adhesives and coatings.