If you don't have the supplies for the ammonia mixture, you can also use bleach or hydrogen peroxide to remove mold, mildew, and stains. Remove dirt and debris using the broom. Put on safety gear. Pour ½ cup of bleach or hydrogen peroxide in a spray bottle with 3 cups of water.
Muriatic acid is a powerful and corrosive acidic liquid made from hydrochloric acid, water, and other trace minerals. This product is a very strong acid that will clean dried cement products off stones, bricks, and other masonry surfaces.
Apply Simple Green.
Use the pressure washer's detergent setting to spray Simple Green onto the bricks. Be careful not to use pressure above 3,000 psi. Higher pressure can damage the surface of the brick and actually wash away the joint sand between bricks.
Make a thin paste by mixing 3 tablespoons of dish soap to 1/2 cup baking soda. Spread it on brick, let sit for 10 minutes and then scrub off with a brush. Rinse with warm water.
Mix a few drops of dish soap with white vinegar and warm water to create a cleaning solution. This is effective for removing dirt and grime from the surface of the brick. Apply the solution to the surface with a sponge or cloth, scrub as needed, and rinse with water.
Clean your bricks with a cleaning solution, or by using undiluted white vinegar. Once you've prepared the surface of the bricks, you can apply a coat of concrete stain. You can adjust it according to the original color of your bricks. You can choose from a wide variety of water-based stains and acid-based ones.
For all bricks:
Wet & Forget works on any color of brick, including red bricks. Check out the photo above to see the awesome results one homeowner got using Wet & Forget Outdoor to remove algae from his red brick patio.
Step #3: Use Vinegar
Let the vinegar sit for about 5 minutes then scrub it off using a stiff-bristled brush. Then rinse the vinegar with hot water and spray the area again. This time, you don't need to rinse away the vinegar; leave it to let it penetrate the brick and kill the mold that's on the interior.
WD-40 may remove paint stuck to brick if applied directly and in large quantities, allowing it to sit on the surface for a few hours.
Here are some options for removing stubborn stains on brick: Mix two tablespoons of borax with four cups of water and one tablespoon of dish soap. Mix ½ cup of ammonia with four cups of water and ¼ cup dish soap.
Sure Klean is #1 choice for masonry cleaning since 1956. Prolong the life of your hard surfaces by repelling water, salt, oil and stains. Erase graffiti and protect surfaces from future graffiti attacks. Remove paint and other coatings.
Mix Dawn and baking soda into a paste to clean detailed brickwork. For old brick, always try the least abrasive method and work your way up. Use a sturdy bristle brush when it comes to fireplace brick cleaning.
If vinegar does not work on your hardscape, you can use bleach. To create a powerful mold-killing mixture, you can add one cup of bleach to a gallon of water. However, you should exercise meticulous care and caution since bleach can discolor your brick pavers and thus ruin your precious hardscape.
RMR-86 Instant Mold and Mildew Stain Remover Spray
This spray can also help take care of the damp, moldy smell so a space will smell fresher again. RMR-86 mold stain remover is safe to use on most surfaces, including drywall, vinyl siding, concrete, brick, and kitchen and bathroom tiles.
For extremely dirty and stained brick, use a rotary scrub brush. This is a less abrasive technique than using water at high pressure. It'll help work the detergent into the brick, and break up tough stains. Grease, grass stains around the foundation where mow stains, moss, and even tree sap are difficult to remove.
The active ingredient in Wet & Forget Outdooris alkyl dimethyl benzyl ammonium chloride.
The best cleaning method is using a mixture of equal parts dishwashing detergent and table salt. Stir the ingredients together to form a paste-like consistency. Prior to rubbing the paste on the brick surface, dust the wall using a feather duster or vacuum to remove visible dust and cobwebs.
Apply a Stain
If you simply cannot work with the existing color of your brick, staining can be a good alternative to painting. A stain is applied to the surface of your brick and is absorbed to alter the color like a dye. Staining has less upkeep than painting and keeps the brick's natural variation.
You need to scrub the dirty bricks with a mixture of table salt and dish soap. The spreadable paste will work well if you are using a bristle brush. Once you have removed the paste with a washcloth, go on and use a sealant to keep the bricks in tip-top condition.
Scrubbing With Bleach
If you have stubborn stains on your brick but don't have a power washer, you can try scrubbing. Simply mix a 10% solution of chlorine bleach to water in a bucket. Scrub the area with a stiff-bristle brush. Once you remove the stains, rinse the brick thoroughly with clean water.
Standard bricks are made mostly from clay, so exposure to undiluted vinegar will quickly result in discolouration and a sticky chemical byproduct coating your bricks.
Brick inside can be easily cleaned with just a few steps. If you're wondering how to clean brick inside the home, you have a few options for a natural DIY cleaner: dish soap with salt, baking soda and dish soap, or vinegar.