Cleaning Concrete Garage Floor Before Painting

For stubborn stains use muriatic acid in combination with your pressure washer set to at least 1200 psi.

Cleaning concrete garage floor before painting.

Wait until your concrete floors are dry before you prime. An easy way to tell whether the floor is dry enough is to place a small. How to paint a garage floor clean and prep the floor. For tough paint stains you may need a commercial paint stripper.

Remove all dirt or debris with a broom. Cleaning concrete garage floor with a floor buffer. This solution should stay on the stain for several hours before scraping or scrubbing the concrete. Tape a large piece of plastic over a portion of the old concrete garage floor attaching all edges of the plastic to the floor.

You can employ a floor buffer fitted with a special scrub pad made for cleaning concrete. Step 1using a rag wipe off all oil and grease spills from the concrete surface. Wear gloves and make sure the garage is well ventilated. Moisture will prevent the primer and paint from adhering properly.

Concrete is very porous and will easily collect dirt and grime so cleaning with a power washer or floor buffing machine is best. Do not skip this part. Pour some of the degreaser or cleaning solution from the bucket onto the floor. Check under the plastic.

New concrete must cure for 30 days before you can clean it or apply a topcoat. Let the detergent sit for 45 minutes then pour boiling water on the area and vigorously scrub the stained section with the broom. Cleaning garage floors by floor grinding or shot blasting will insure your concrete is profiled correctly. The buffers can be rented and the rental companies often sell the scrub pads too.

These powered buffers will scour the floor replacing the manual scrubbing with a brush. Dampen the cement floor thoroughly with a hose. Leave the plastic on the floor for 24 hours. Pour dry dishwasher detergent or a concrete cleaning agent on the stain.

Homemade concrete cleaning solution.