How to Remove Mold and Moss From Exterior Brick

Removing mold and moss from exterior brick can improve the overall appearance of your home or building and prolong the life of your brickwork. Here's a guide to help you effectively remove mold and moss from exterior brick:

Materials Needed:

- Garden hose or pressure washer

- Stiff-bristled brush

- Commercial mold and mildew remover or a homemade solution (1 part bleach to 4 parts water)

- Safety goggles

- Rubber gloves

- Drop cloth

Steps:

1. Prepare the Area:

- Begin by clearing the area around the brickwork to allow for easy access. Place a drop cloth below the brickwork to catch any falling debris.

2. Remove Loose Dirt:

- Use a garden hose with a gentle stream of water to rinse off any loose dirt and debris from the brick surface.

3. Apply Mold Remover:

- Mix the commercial mold and mildew remover according to the manufacturer's instructions or prepare the homemade solution using 1 part bleach and 4 parts water.

- Wear safety goggles and gloves to protect yourself.

- Apply the mold remover or homemade solution liberally to the mold and moss-affected areas.

- Allow the solution to sit for the recommended amount of time specified by the product instructions or at least 15 minutes.

4. Scrub the Brickwork:

- Use a stiff-bristled brush to scrub the brickwork thoroughly. Work in small sections and start from the bottom, moving upwards.

- Be sure to pay close attention to areas with heavy mold and moss growth.

- Scrub in the direction of the brick's grout lines to ensure you reach all areas.

5. Rinse Off:

- Thoroughly rinse the brickwork with water from a garden hose to remove any mold remover residue and loosened dirt.

- Ensure you reach all surfaces and the areas between the bricks.

6. Inspect and Repeat:

- Inspect the brickwork for any remaining mold or moss. Repeat the process if necessary, focusing on persistent areas.

7. Rinse Again:

- Give the brickwork a final rinse with water to ensure all cleaning solution has been removed.

8. Allow to Dry:

- Let the brickwork dry completely before moving on to any other maintenance or sealing.

Important Tips:

- Test a small, inconspicuous area before applying the mold remover solution to the entire surface to ensure it doesn't damage or discolor the bricks.

- Use a pressure washer cautiously, as high pressure can damage the mortar joints between the bricks.

- Avoid using metal brushes or harsh abrasives, as they can scratch and damage the brick surface.

- If mold and moss reappear frequently, consider addressing the root cause, such as moisture problems or lack of sunlight.

- Regular maintenance and periodic cleaning can help prevent future mold and moss growth.

Safety Precautions:

- Proper ventilation is important when using chemical solutions. Open windows to ensure air circulation.

- Always wear protective gear, including safety goggles and gloves, to avoid skin and eye contact with the cleaning solution.