Cleaning Concrete Garage Floor Before Painting

Moisture will prevent the primer and paint from adhering properly.

Cleaning concrete garage floor before painting.

For stubborn stains use muriatic acid in combination with your pressure washer set to at least 1200 psi. Attach a brush or coarse scrubbing pad to an electric floor scrubber. Dampen the cement floor thoroughly with a hose. Wait until your concrete floors are dry before you prime.

For tough paint stains you may need a commercial paint stripper. Concrete is very porous and will easily collect dirt and grime so cleaning with a power washer or floor buffing machine is best. Let the detergent sit for 45 minutes then pour boiling water on the area and vigorously scrub the stained section with the broom. Do not skip this part.

Wear gloves and make sure the garage is well ventilated. Cleaning concrete garage floor with a floor buffer. Step 1using a rag wipe off all oil and grease spills from the concrete surface. New concrete must cure for 30 days before you can clean it or apply a topcoat.

How to paint a garage floor clean and prep the floor. An easy way to tell whether the floor is dry enough is to place a small. Remove all dirt or debris with a broom. If you try applying an epoxy floor paint to a smooth unprofiled concrete floor you can expect the epoxy to peel and lift due to hot tire pickup and inproper adhesion.

These powered buffers will scour the floor replacing the manual scrubbing with a brush. Pour dry dishwasher detergent or a concrete cleaning agent on the stain. Pour some of the degreaser or cleaning solution from the bucket onto the floor. Leave the plastic on the floor for 24 hours.

Tape a large piece of plastic over a portion of the old concrete garage floor attaching all edges of the plastic to the floor. Cleaning garage floors by floor grinding or shot blasting will insure your concrete is profiled correctly. This solution should stay on the stain for several hours before scraping or scrubbing the concrete. Homemade concrete cleaning solution.

The buffers can be rented and the rental companies often sell the scrub pads too.