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🧱 Step 2: Drill Injection Holes
- Drill holes horizontally into the mortar joint at about 10-12 cm intervals.
- The standard height is approximately 150 mm above external ground level.
- Drill to a depth that reaches 80% of the wall thickness (usually around 10-12 cm).
💉 Step 3: Inject the Damp-Proof Cream
- Insert the cartridge of DPC cream into your caulking gun.
- Fill each drilled hole with cream until it’s flush with the opening.
- The cream will slowly penetrate the wall, forming a water-repellent barrier over time.
🧯 Step 4: Allow to Cure
- Leave the wall for at least 7-14 days to allow the cream to fully absorb and create a barrier.
- During this time, the wall will begin to dry out naturally.
🖌 Step 5: Replaster and Seal
- Once dry, apply a salt-resistant basecoat or damp-seal membrane to the wall.
- Finish with fresh plaster or filler, and repaint with breathable paint.
Why This Method Works
This DIY technique uses silane/siloxane-based creams, which chemically bond to the wall material and block moisture movement. It’s cost-effective, requires minimal tools, and can be done over a weekend. Best of all, once applied properly, the treatment can last for decades.
Tips for Success
- Only apply treatment when walls are relatively dry—avoid rainy days or high humidity.
- Always use breathable materials for finishing to avoid trapping moisture.
- Consider treating adjacent walls to prevent moisture migration.
Final Thoughts
Rising damp doesn’t have to be a nightmare. With this DIY method, you can restore your walls, protect your home, and save thousands. Whether you’re a first-time DIYer or a seasoned homeowner, tackling damp the smart way is now easier than ever.
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