-Does not Burn Intact Skin
-Up to 95% Less Fumes than Full Strength HCL Acid
-Works Better than Full Strength Muriatic Acid with Less Harmful Effects
-Quickly Removes Efflorescence, Calcium, Calcium Carbonate and Hard Water Stains
Concrete and Masonry: Use to clean efflorescence and calcium. At stronger concentrations, use to etch concrete in preparation for painting or coatings. At diluted ratios, use as a general cleaner. Removes excess mortar from brick and mud stains.
Always Add Acid to Water, NOT Water to Acid
Pre-Cleaning: If necessary, power wash surface to be cleaned using a commercial grade pressure washer, degreaser and surface cleaner to remove oil and debris. An alkaline concrete cleaner may be used. Rinse well. Cleaning the concrete first will remove loose dirt and debris, clearing the path for better cleaning.
Dilution Ratios (Water to Product):
For Concrete, Brick, Paver, Grout & Masonry
Thick Calcium Stains and Concrete Prep for Coatings: 1:1 up to 4:1
Medium Calcium Stains: 4:1 up to 8:1
Light Calcium Stains: 8:1 to 12:1
Powdery Efflorescence Cleaning 12:1
General Cleaning 8:1
5 Reviews Hide Reviews Show Reviews
Absolutely the best product for removing red clay stains from concrete. Saves me time which makes me money and my customers are thrilled.
I use F9 on just about every garage floor I clean. It completely removes the stains from the red clay on new construction homes.
Worked exactly as advertised. Removed efflorescence from a large brick porch with a single application. This is a legit product. Will buy again when needed.
Our go to for many cleaning needs!
We use this product to remove red clay stains from concrete and houses in SC. It saves us time and produces a superior result over anything else we have tried.