How Do I Fix a Leaking Concrete Roof in Ghana? (2026 Step-by-Step Guide)
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How to Fix a Leaking Concrete Roof in Ghana — Complete Step-by-Step Guide
To fix a leaking concrete roof in Ghana permanently: stop active leaks with Plugging King, clean and prepare the surface, seal cracks with butyl rubber tape, apply 2 coats of polyurethane liquid membrane, and allow 48-hour cure. Materials cost roughly GHS 1,500-2,500 for a small-to-medium roof. For warranty-backed repair, call Fest Ghana Limited on 0555 548 001.
Emergency First — Stop the Active Leak
Before diagnosing or planning, stop water NOW. Use whichever product matches your situation:
| Situation | Product | Cost |
|---|---|---|
| Flowing water leak | Plugging King | GHS 100 |
| Cracked joint or seam | Butyl Rubber Tape | GHS 250 |
| Small drip or pinhole | Waterproof Spray | GHS 200 |
The Permanent Fix — Step by Step
Step 1: Diagnose the Leak Source
Wait for rain to stop, then walk the roof. Look for:
- Visible cracks (any size)
- Failed sealant around drains, pipes, air conditioning
- Ponding water areas (indicates blocked drainage)
- Damaged parapet upstands
- Peeling old waterproofing
Step 2: Work Out How Much Coating You Need
Get this right or the job fails
Bucket coverage is quoted per coat. Waterproofing needs two. A 10kg bucket covers 40–80 m² with one coat — but only 20–40 m² as a finished membrane. Running out halfway through a coat and leaving it overnight creates a cold joint, and that is where it will leak.
| Roof size | Buy (2 coats) | Coating cost |
|---|---|---|
| 20 m² | 1 × 10kg | GHS 1,000 |
| 30–40 m² | 1–2 × 10kg | GHS 1,000–2,000 |
| 50 m² | 2 × 10kg | GHS 2,000 |
| 100 m² | 3–5 × 10kg | GHS 3,000–5,000 |
Old, rough or never-coated concrete drinks material — use the higher figure. Smooth or previously sealed concrete uses less. Unsure? WhatsApp your measurements to 0555 548 001 for a free quantity check.
Step 3: Buy Materials
For a typical 30–50 m² residential concrete roof:
- 2 × 10kg Fest Ghana PU Coating — GHS 2,000
- 1 roll Butyl Rubber Tape — GHS 250
- Wire brush, paint roller, brush — GHS 150
- Safety equipment (gloves, mask) — GHS 100
- Total: ~GHS 2,500
Step 4: Prepare the Surface
- Wire-brush entire roof to remove loose material
- Sweep dust and debris
- Ensure substrate is completely dry (below 4% moisture)
- Repair any deep cracks with sealant, let cure
Step 5: Seal Cracks with Butyl Rubber Tape
- Apply butyl tape over any visible cracks and joints
- Extend tape at least 50 mm beyond each side of crack
- Press firmly to ensure full adhesion
Step 6: Apply First Coat of Polyurethane
- Use paint roller for main surfaces
- Use brush for corners, edges, and penetrations
- Apply in one direction across the roof
- Work continuously — do not stop mid-coat and resume the next day
Step 7: Cure Between Coats
- Wait 4-6 hours for first coat to become touch-dry
- Do NOT apply second coat if rain is forecast within 12 hours
Step 8: Apply Second Coat (Perpendicular)
- Apply second coat PERPENDICULAR to the first
- This crossing pattern eliminates pinholes
Step 9: Cure and Test
- Allow 24-48 hours full cure
- Do a flood test if possible (pool water on roof, check for leaks below)
- Done — a correctly applied two-coat system has a 20-year design life
When to Call a Professional Instead
DIY works for small, simple roofs. Call Fest Ghana Limited if:
- Roof is complex (multiple penetrations, corners, drains)
- Building is 2+ storeys (safety and access)
- You want a written warranty
- Existing waterproofing has failed extensively
- You don't have time or physical ability
Professional cost: GHS 80-130 per m² (2-coat) or GHS 180-280 per m² (fleece-reinforced), with a 3-year workmanship warranty and a 3-year manufacturer material warranty.
Book Professional Fix
👉 Book Free Site Assessment · Call/WhatsApp: 0555 548 001