Why Wall Repairs are Necessary
- Walls exposed to dampness, salts, and structural stress eventually deteriorate if untreated. Common issues include:
- Crumbling plaster caused by salt crystallization.
- Cracks in masonry that allow water ingress.
- Discoloration and mould growth reducing aesthetics and hygiene.
- Loss of structural strength in sandcrete blocks or mortar joints.
- Without repair and restoration, the damage worsens—affecting not only the building’s appearance but also its safety and value.
Steps in Wall Repair and Restoration
Diagnosis and Preparation
Carry out a damp survey to confirm whether the wall is suffering from rising damp, penetrating damp, condensation, or a combination.
Remove all defective or salt-contaminated plaster up to at least 1 m above the highestamp mark.
B. Crack Repair and Masonry Stabilization
Hairline cracks: Seal with polymer-modified mortar or StopDamp+ slurry coating.
Damp-Proofing Integration
If rising damp is present, apply StopDamp+ Injection Cream into the lowest mortar course to create a new damp-proof barrier.
For penetrating damp, treat external walls with StopDamp+ Slurry as a breathable barrier.
D. Replastering and Surface Restoration
Apply a two-coat salt-resistant plaster system:
1. Base Coat: OPC + StopDamp+ Cement Mix, 10–12 mm thick, scratched for key.
2. Finish Coat: OPC + StopDamp+ Cement Mix, 8–10 mm thick, smooth finish but breathable.
Allow proper curing (gentle misting, no over-wetting).
After curing, apply breathable finishes (e.g., mineral paint, breathable emulsion). Avoid vinyl paints that trap moisture.
Benefits of Professional Wall Restoration
Durability – Prevents recurring plaster damage from salts.
Healthier Interiors – Eliminates mould and musty odors.
Stronger Masonry – Stabilizes sandcrete/concrete blocks and joints.
Enhanced Aesthetics – Smooth, fresh surfaces ready for decoration.
Property Value – Restored walls increase resale and rental appeal.