BEHR PREMIUM® Concrete & Masonry Cleaner & Etcher No. 991

Average Rating:

Start your project with the BEHR PREMIUM Concrete & Masonry Cleaner & Etcher to help create a beautiful and long-lasting finish. This indoor/outdoor formula will clean and etch the concrete substrate which allows floor coatings to properly adhere to the surface. This prep product is also great for removing rust and red clay stains.

Best for use in
Use on Interior/Exterior uncoated surfaces including Garage Floors, Driveways, Walkways, Patios, Pool Decks and Basement Floors.
Full Strength: 14-18 m2
Diluted: 28-37 m2

Read important application instructions to ensure optimum paint performance.

Technical Data Sheets

Download TDS

Safety Data Sheets

Product Usage

Spread rate icon

Full Strength
14-18 m2
28-37 m2

Wet icon

Keep Surface Wet
During Use

Soap and water cleaning a paint brush icon

Soap & Water

Where to UseBlank space if empty.
  • Use on Interior/Exterior uncoated surfaces such as: Garage Floors, Driveways, Walkways, Patios, Basement Floors and Concrete Walls.
  • Removes grease, oil, auto fluids, rust and red clay stains.
  • NOTE: If etching is not desired, use a product such as BEHR PREMIUM® CONCRETE & MASONRY DEGREASER & CLEANER NO. 990.

CAUTION: Surfaces may become slippery when wet. Use caution when walking on surface when moisture is present.

Usage SummaryBlank space if empty.
PreparationBlank space if empty.

The following steps are required.

  • New concrete must cure for a minimum of 30 days.
  • Wipe up all excess oil and grease spills.
  • Scrape and sweep away dirt and loose contaminates on the surface.
  • For severe oil or grease stains use a product such as BEHR PREMIUM® NO. 990 Degreaser & Cleaner.
  • Remove dirt and loose contaminates.
  • Protect grass and any nearby plants by dampening these areas with water and covering with plastic drop cloths.
  • Prevent all rinse solution from entering storm drains.
MixingBlank space if empty.
  • DO NOT MIX IN A METAL CONTAINER. Use a plastic mixing container, large enough to hold up to 2 gallons of diluted solution.
  • Use full strength on hard to clean interior/exterior stained surfaces and smooth concrete. Always work in a well-ventilated area.
  • For new and lightly stained concrete or to etch galvanized metal, use a diluted solution of 1 part NO. 991 to 1 part water (1:1 dilution).
  • Stir diluted solution thoroughly. Avoid splashing.
ApplicationBlank space if empty.
  • Wear protective clothing, goggles and acid resistant rubber gloves & boots.
  • Avoid splashing. Spraying is not recommended.
  • For best results, use a plastic watering can to evenly distribute product or spread product using a stiff bristled, non-metal brush or broom.
  • On sloped surfaces, start at the lowest point working up to the highest point.
  • Apply to a dry surface for best results.
  • Allow product to stand for 10-20 minutes then scrub vigorously.
  • Do not let product dry on the surface.
  • NOTE: The surface is ready when it feels like medium grit sandpaper and no residue or loose concrete remains on the surface.
  • Dense and smooth surfaces may require additional applications.
  • Exterior Surfaces:Rinse surface thoroughly with fresh water while scrubbing to properly remove all remaining residue. Remove excess water with a non-metal squeegee or mop.
  • Interior Surfaces: Remove residue using a mop and bucket or wet/dry vacuum to minimize the amount of water left on the concrete surface. Allow the surface to completely dry.
  • NOTE: Wipe your fingers over the clean floor to cheque for dust or powder. If residue is visible on your fingers, repeat the rinsing step.
DisposalBlank space if empty.
  • In case of contact with painted or finished surfaces, rinse immediately with fresh water.
  • Product will damage automobile finishes. Properly dispose of soiled rags.
  • To recycle or properly dispose of product in your community, contact your household refuse collection service.
To consult with a Behr Certified Coatings Professional, call 1-800-661-1591.

Read Application Instructions

LIMITED WARRANTYBlank space if empty.

For one year from the date of purchase, Behr Process Corporation warrants to the original consumer purchaser, (1) that the product meets Behr Process Corporation’s manufacturing specifications, and (2) the performance of this product when applied according to the label instructions and specifications. If this product is found not to perform as specified on the label within one year from the date of purchase, Behr Process Corporation will, at its option and upon presentation of proof-of-purchase (the original receipt), either furnish an equivalent amount of new product or refund the original purchase price of this product to you. The clause of limitation of liability which follows is inapplicable in Québec. This warranty excludes (1) labour and costs of labour for the application or removal of any product, and (2) any incidental or consequential damages, whether based on breach of express or implied warranty, negligence, strict liability or any other legal theory. To the extent permitted by applicable law, any implied warranties including the implied warranties of merchantability and of fitness for a particular purpose, are limited to the duration of this express warranty. The above provisions are not intended to operate where prohibited by law. This limited warranty is the only warranty provided by Behr Process Corporation unless extended by a provincial consumer statute. To obtain warranty service, call 1-800-854-0133 ext. 2, or contact Behr Process Corporation at 2750 Centre Avenue N.E., Calgary, AB T2A2L3. Behr Process Corporation reserves the right to inspect any and all application of the product prior to processing your claim made under this warranty.

Read Warranty Information

Ready to get started?


Contact a BEHR® rep

Your reputation depends on your ability to do the job right. BEHR can help.

Find a rep

Get 10% - 20% Back in Quarterly Rewards
BEHR® Paints, Stains & Primers

Technical services


Mon - Fri, 6am-3pm PST
Sat. & Sun., Closed

Never miss out on the latest deals and news from behr.