Recycled bricks tell a story; they bring charm, texture and warmth to every wall.
But over time, even the toughest recycled bricks or old red bricks can start to crumble, flake or lose strength.
Moisture, salt, and changing weather all take their toll.
If you’ve noticed worn corners or powdery surfaces on your used bricks or reclaimed bricks, don’t panic. Most damage can be fixed at home with the right tools and advice.
In this guide, The Brick Pit – Australia’s trusted brick supplier and leader in brick recycling shares how to restore your bricks step by step, plus a few expert tips to prevent future damage.
What Makes Bricks Crumble or Flake?
Understanding the cause helps you choose the right repair method.
- Moisture Ingress – Water seeps into tiny pores and expands as temperatures change.
- Incorrect Mortar – Hard cement mortar stresses softer heritage or sandstock bricks.
- Salt Efflorescence – Salts drawn to the surface create white stains and surface decay.
- Freeze–Thaw Cycles – Repeated freezing causes internal cracking.
- Age & Wear – Decades of exposure slowly break down even durable second-hand bricks.
Step-by-Step: Repairing Damaged or Crumbling Bricks
Step 1 – Inspect the Area
Check for:
- Flaking surfaces or powdery residue
- Deep cracks or missing pieces
- Loose mortar joints
Minor surface damage can be repaired; serious structural cracks may need help from our Brick Matching Service team.
Step 2 – Clean Before You Repair
Brush away dust and loose fragments using a soft-bristled brush or low-pressure water. Avoid acid cleaners – they can weaken old bricks for sale or heritage bricks.
Pro tip: The Brick Pit recommends mild, eco-friendly cleaners to protect recycled red bricks and mortar joints.
Step 3 – Remove and Replace Heavily Damaged Bricks
If the brick has completely deteriorated:
- Use a cold chisel to remove the surrounding mortar.
- Take out the old brick carefully.
- Clean the cavity.
We can also help with custom brick blending, brick resizing and cutting, and custom brick engraving for a perfect finish.
Step 4 – Prepare Your Replacement Brick
Choose a reclaimed brick that matches the original colour and texture. If an exact match isn’t available, our Custom Brick Blending team can replicate it precisely.
Step 5 – Install or Patch the Brick
- Dampen the cavity slightly.
- Apply a lime-based mortar suitable for sandstock bricks.
- Place the new brick and fill joints evenly.
- Smooth the finish and allow it to cure.
For minor surface repairs, use a masonry patching compound for recycled bricks. After it dries, sand gently to blend the texture.
Step 6 – Seal and Protect
Finish your repair by applying a breathable, water-repellent sealer.
Avoid sealers that trap moisture – bricks need to “breathe.”
If you’re repairing an outdoor wall, ensure proper drainage and inspect annually.
Need supplies delivered? Explore our Bricks Delivery Services for fast, reliable shipping across Australia.
Prevent Future Damage
Keep your house bricks in top shape with these easy habits:
- Keep soil and garden beds away from brick walls.
- Clean with gentle brushes and pH-neutral soaps.
- Repoint weak mortar every few years.
- Avoid high-pressure washing.
- Source only tested recycled bricks from trusted brick suppliers like The Brick Pit.
Why Choose The Brick Pit
We’ve been Australia’s original brick recycling experts for decades – rescuing, cleaning and supplying recycled red bricks, sandstock bricks, and old bricks for sale for projects nationwide.
Our team offers:
- Custom brick blending for perfect colour matches
- Brick resizing and cutting for precise repairs
- Brick matching service for heritage restorations
- Custom brick engraving for personal or architectural touches
Every brick we supply is sustainably sourced and thoroughly quality-checked — keeping your walls beautiful and the planet cleaner.
Final Thoughts
Repairing crumbling or damaged recycled bricks isn’t as hard as it looks.
With the right care, you can restore your wall’s strength and character — and preserve the story it tells.
Whether you need recycled bricks, used bricks, or expert guidance,
The Brick Pit is here to help with sustainable materials and decades of experience.
Ready to start your repair?
Contact us today to find the perfect recycled red bricks for your project or book a consultation with our restoration team.
