How to Remove Cement Stains from Face Bricks
July 2, 2025
Cement stains are one of the most common problems on face brick walls after construction. They are stubborn, they stand out against the natural colour of the brick, and if left too long, they bond to the surface and become significantly harder to shift. The good news is that with the right approach, most cement stains can be removed without damaging the bricks underneath.
This guide walks you through the entire process, from the tools you need to the cleaning methods that work, and the ones that can do more harm than good.
Why Timing Matters More Than Most People Realise
The single most important factor in removing cement stains is how quickly you act. Fresh cement and mortar that has been on a brick surface for less than 24 hours is still soft enough to be removed with water and a brush alone. Once it cures fully, which usually takes two to seven days depending on temperature and conditions, the bond to the brick surface becomes significantly stronger and requires more effort to break.
This is why experienced bricklayers clean mortar splashes off face bricks at the end of each working day. It takes a few minutes and saves considerable effort later. If your build has already been completed and the cement has cured, do not worry. The process is more involved, but it is still manageable with the right method.
What You Will Need Before You Start
Gathering your materials before you begin saves time and ensures you are not improvising halfway through the job.
Item | Purpose |
Stiff-bristled nylon brush | Scrubbing loosened cement from brick surface |
Garden hose or bucket of water | Wetting the area and rinsing after cleaning |
White vinegar | Natural acidic cleaning solution for moderate stains |
Commercial brick cleaner | For heavy or well-cured cement stains |
Protective gloves | Skin protection, especially if using commercial cleaners |
Safety goggles | Eye protection from splashing |
Plastic sheeting | To protect surrounding areas from cleaning solution runoff |
One important note on brushes: avoid metal-bristled or wire brushes at all costs. They will scratch the surface of your face bricks and create marks that are far more difficult to deal with than the original stain.
Step-by-Step: How to Remove Cement Stains
Step 1 – Wet the Area Thoroughly
Before applying any cleaning solution, soak the affected area with a hose or bucket of water. This serves two purposes. It softens any loose cement residue, and it prevents the cleaning solution from absorbing too deeply into the brick when you apply it. A well-saturated brick surface responds better to cleaning than a dry one.
Step 2 – Spot Test Before You Commit
This step is non-negotiable, particularly with older or more delicate face bricks. Apply your chosen cleaning solution to a small, hidden section of the wall and leave it for five minutes. Check whether the brick changes colour, loses its finish, or shows any sign of damage. Only proceed to the main area once you are satisfied the brick is not reacting negatively.
Step 3 – Choose the Right Cleaning Method
For Light or Recent Cement Stains: Vinegar Solution
Mix equal parts white vinegar and water. Apply the solution to the stained area and allow it to sit for three to five minutes. The mild acidity in the vinegar helps break down the calcium compounds in the cement without being aggressive enough to damage the brick surface. Once the solution has had time to work, scrub the area using your nylon brush in a firm circular motion. The circular action helps lift residue from the mortar joints and the face of the brick more effectively than scrubbing back and forth.
For more information on how surface staining develops on face bricks and what causes it, our article on Why Face Bricks Get an Efflorescence Coating covers the chemistry behind brick surface issues in a way that will help you understand why certain cleaning methods work.
For Heavier or Older Cement Stains: Commercial Brick Cleaner
If the vinegar solution is not shifting the stain after two or three attempts, a commercial brick cleaner is the next step. These products are available at most hardware stores and are formulated specifically for masonry. They contain stronger acids, so this is the point where your gloves and goggles become essential, not optional.
Follow the manufacturer’s dilution instructions precisely. Do not assume that a stronger mix will work faster. Undiluted commercial cleaners can etch into the surface of face bricks and leave permanent discolouration. Apply the diluted solution to the wet brick, allow it to sit for the recommended time, and then scrub firmly.
If you need additional guidance on tackling other types of surface staining, our article on The Best Ways to Remove Efflorescence from Face Bricks covers a similar step-by-step process for salt deposits.
Step 4 – Rinse Thoroughly
Rinsing is not optional. Any cleaning solution left on the brick surface, whether vinegar or commercial cleaner, will continue to act on the brick long after the stain has been removed. Residue from acidic cleaners can accelerate surface wear and affect the long-term appearance of the wall.
Rinse the entire cleaned area with clean water until the runoff runs completely clear. Pay attention to mortar joints, as cleaning solution can pool there and is easy to miss.
Step 5 – Repeat Where Necessary
Some stains, particularly those that have been on the surface for several weeks or have been painted over, will not lift in a single application. This is normal. Repeat the process as many times as needed, allowing the brick to dry between applications so you can accurately assess progress. Rushing this step by applying more product without letting the brick settle between rounds often causes unnecessary damage.
What Not to Do
Knowing what to avoid is as important as knowing the correct method. Using a metal wire brush causes surface scratches that cannot be undone. Applying undiluted acid-based cleaners can strip the surface finish from the brick, creating patchy areas that stand out permanently. Pressure washing at high settings can damage mortar joints and force water behind the brick face, which leads to longer-term moisture problems.
Face bricks are designed to be left in their natural state. Most do not need any sealers or aftermarket treatments. In fact, applying a sealer that is not compatible with clay brickwork can trap moisture inside the wall and create more problems than it solves. For more on how face bricks are designed to perform over the long term, read our article on How Long Do Clay Face Bricks Last.
When to Call a Professional
If you are dealing with a large surface area, very old cement deposits, or staining across a significant portion of a commercial building, it is worth calling a professional masonry cleaner. They have access to pH-controlled cleaning systems and experience handling different brick types without causing damage. The cost of professional cleaning is almost always less than the cost of repointing or replacing damaged brickwork caused by a DIY cleaning attempt that went wrong.
You can also contact the Dezyno Bricks team directly for advice on the right cleaning approach for your specific brick type. Browse the full range of face bricks on our shop page to find product details and get in touch.
FAQ
Can I use muriatic acid to remove cement stains from face bricks?
Muriatic acid (hydrochloric acid) is sometimes used for heavy cement removal, but it is highly aggressive and should only be used by experienced professionals with proper protective equipment. On residential face bricks, it carries a real risk of permanent discolouration and surface damage. For most homeowners, a commercial brick cleaner from a hardware store is the safer and more controllable option.
How long should I let the cleaning solution sit before scrubbing?
For a vinegar solution, three to five minutes is sufficient. For commercial brick cleaners, follow the manufacturer’s instructions, which typically recommend between two and ten minutes depending on the concentration and the stain. Never leave any acidic solution on the brick for longer than directed, as extended contact can begin etching the surface.
Is it safe to pressure wash face bricks to remove cement stains?
Pressure washing at low to medium settings can help rinse loosened cement, but it should not be used as the primary removal method for hardened stains. High pressure can damage mortar joints, particularly on older walls. If you do use a pressure washer, keep the nozzle at least 30cm from the surface and use a fan spray setting rather than a concentrated stream.
Can I remove cement stains myself, or do I need a professional?
Most light to moderate cement stains on residential walls can be handled with the DIY method described in this article. Larger areas, heavy industrial staining, or situations involving particularly delicate or heritage brickwork benefit from professional attention.
Will removing cement stains affect the colour of my face bricks permanently?
If the correct method is used and the cleaning solution is properly rinsed, the brick colour should not be affected. Problems arise when commercial cleaners are left too long, applied undiluted, or used on bricks that were not properly wetted first. Always do a spot test before treating a large area.
