A brick patio adds timeless character to a home, but brick and mortar need a gentler touch than solid concrete. Moss, mildew, algae, weeds and dirt settle into the joints, especially in shaded East Tennessee yards. Here is how to clean a brick patio without damaging the bricks or washing out the joints, and when to bring in a professional. For service, see our concrete and hardscape cleaning service.

Why Clean a Brick Patio
- Removes slippery moss, mildew and algae for safer footing.
- Restores the warm color of the brick and improves curb appeal.
- Clears weeds and debris from joints before they loosen bricks.
- Helps the patio last by removing growth that holds moisture.
What to Consider Before Cleaning
The age of the bricks, the type of mortar or joint sand, and how much buildup is present all affect how the patio should be cleaned. Older bricks and soft mortar are especially vulnerable, and too much pressure or a nozzle held too close can chip brick faces and blast out joint material.
How to Clean a Brick Patio Safely
- Clear and sweep. Remove furniture and plants, close nearby doors and windows, and sweep or blow away leaves and twigs.
- Pull weeds. Remove growth from the joints.
- Pre-treat. Apply a brick-safe cleaning solution to loosen moss and mildew, and avoid acid-based products.
- Clean with low pressure. Keep a wide spray pattern and steady distance, and avoid aiming into the joints.
- Rinse and dry. Rinse thoroughly and let the patio dry completely.
- Restore the joints. Refill joints with polymeric sand where needed to lock bricks in place and discourage weeds.
Keeping Your Brick Patio Clean
Sweep regularly, clear wet leaves before they stain, trim back plants that keep the patio shaded and damp, and schedule a professional cleaning as growth returns. Sealing can help protect the brick between cleanings. The M.O.O.R.E.S. Maintenance Club keeps your outdoor surfaces on a regular cleaning schedule.
Related Guides
For walls, chimneys and other brick, read our guide to cleaning brick safely. For other hardscapes, see cleaning patio pavers and cleaning a concrete patio.
Professional Concrete and Hardscape Cleaning in East Tennessee
Moore’s Pressure Washing is licensed and insured and serves homeowners in Knoxville, Sevierville, Morristown and communities throughout East Tennessee. Explore our concrete cleaning service, see our service areas or request your free quote. Call (865) 606-6986.


