Concrete Roof & Wall Waterproofing in Kpone Katamanso — 370 m² Residential Project (2026)

Concrete Roof & Wall Waterproofing in Kpone Katamanso

Fest Ghana Limited completed a comprehensive residential waterproofing project in Kpone Katamanso, a fast-growing suburb of the Greater Accra Region. The project covered the entire concrete roof and the exterior walls of a residential home located opposite DPS International (Delhi Public School International), one of the area's most recognisable landmarks.

This case study documents what was involved: the scope, the system chosen, the application process, materials used, and the outcome. It is a useful reference for Ghanaian homeowners in the Kpone Katamanso, Katamanso, Tema, and Ashaiman areas planning similar comprehensive waterproofing — and it contains the most useful number on this website: a verified material rate from a real job.

Project at a Glance

Client	Residential homeowner
Location	Kpone Katamanso, Greater Accra Region — opposite DPS International
Scope	Full concrete roof + exterior wall waterproofing
Total surface area	370 m² (roof + walls combined)
System	Single-component polyurethane liquid waterproof membrane (2-coat application)
Materials used	15 buckets of 10kg = 150 kg total polyurethane coating
Material rate	0.41 kg/m² across two coats
Duration on site	3 days (spread out to accommodate cure windows and weather)
Design life	20 years
Warranty	3-year workmanship + 3-year manufacturer material

The Number Most Ghanaian Quotes Get Wrong

Note carefully: bucket coverage figures are quoted per coat. Waterproofing requires two. Roughly half of DIY failures we are called out to fix come down to someone buying the single-coat quantity and stretching it across two coats, or running out and finishing the next day. Old, rough or unsealed concrete uses more; smooth or previously sealed concrete uses less.

Why Comprehensive Roof + Wall Waterproofing?

Most Ghanaian homeowners think about waterproofing only when they see an active leak. By then, the damage is often already substantial — wet insulation, damaged ceilings, ruined paint, and hidden mould inside walls.

This Kpone Katamanso homeowner took the proactive route: waterproof the entire building envelope BEFORE major problems develop. The reasoning is simple:

• Ghana's climate hits concrete hard — tropical UV, thermal cycling from 20°C day/night swings, and intense rainy-season loading
• Kpone Katamanso specifically gets heavy rainy-season storms with high humidity year-round
• Waterproofing the whole envelope at once is significantly cheaper per m² than doing sections separately over multiple years
• Single continuous membrane = no failure points at boundaries between waterproofed and unwaterproofed sections

Why Polyurethane Was Chosen for This Job

Single-component polyurethane liquid membrane is the professional standard for comprehensive Ghanaian residential waterproofing. For this Kpone Katamanso project it delivered exactly what the homeowner needed:

Ghana Climate Performance

• UV-stable — will not degrade under Ghana's tropical sun exposure
• Stable to 80°C+ surface temperature — concrete roofs in Katamanso can hit 65–75°C in dry season
• Crack-bridging — flexible membrane accommodates thermal expansion without splitting
• Water-vapour permeable — substrate can still breathe (no trapped moisture problems)

Application Advantages

• Single-component — no mixing required on site, faster application
• Ready-to-use straight from bucket — no primer needed on properly prepared concrete
• Bonds to concrete, block work, render, and masonry in one system
• Available in colours matching architectural preferences

Long-Term Economics

• 20-year design life — the membrane is engineered to keep performing for two decades
• 3-year workmanship warranty — backed by Fest Ghana Limited
• 3-year manufacturer material warranty — on the polyurethane itself

Design life and warranty are separate figures. The warranty is what we return and fix at our cost. Any Ghanaian contractor advertising a 20-year or 25-year warranty on waterproofing is quoting design life — ask for the warranty period in writing.

Our Application Process — Step by Step

Day 1 — Substrate Preparation

The entire concrete roof and target wall surfaces were cleaned. Loose material, dust, and old paint remnants were removed. Any visible cracks were inspected and treated with polyurethane sealant to bridge them before coating. Any surface contamination that could compromise adhesion — oil, algae, moss — was neutralised. The substrate was allowed to fully surface-dry.

Day 2 — First Coat Application (Roof)

The first coat of single-component polyurethane liquid membrane was applied across the entire concrete roof surface using rollers, with brushes reserved for corners, penetrations, and edge details. Application worked in a single direction across the roof to ensure uniform thickness. All parapet upstands, drainage outlets, and pipe penetrations received extra attention.

Day 2 — Cure Window

The first coat was allowed to cure for the required 4–6 hours in Ghana's warm ambient conditions. During this time, wall surfaces were prepared in parallel.

Day 3 — Second Coat + Wall Waterproofing

The second coat of polyurethane liquid membrane was applied to the roof, this time in a perpendicular direction to the first coat. This crossing pattern creates a seamless membrane with zero pinholes — catching every micro-defect the first coat might have missed.

Simultaneously, the wall waterproofing was applied with the same 2-coat crossing technique, ensuring continuous membrane transition from wall to roof edge. This transition detail is where most waterproofing systems fail — we treated it as the most critical interface on the entire job.

Final Cure and Inspection

The full system was allowed to cure to a solid, seamless finish. On final inspection, the entire 370 m² surface was uniformly coated, seamless at all edges, and watertight.

Materials Deployed — 15 Buckets, 150 kg

• 15 buckets × 10 kg each = 150 kg total single-component polyurethane liquid membrane
• Rate: 0.41 kg/m² across two coats — approximately 25 m² of finished membrane per 10kg bucket
• Total surface waterproofed: 370 m² (roof + walls combined)

All materials were Fest Ghana Limited own-brand polyurethane waterproof coating, GSA-compliant and carrying full manufacturer certification. This same coating is available for professional and DIY buyers:

• 10kg polyurethane waterproof coating bucket — GHS 1,000
• 5kg polyurethane waterproof coating bucket — GHS 500

Kpone Katamanso — Why Waterproofing Matters Here

Kpone Katamanso is one of Greater Accra's fastest-growing residential areas. Homes here face:

• Heavy rainy-season loading — storms can exceed 100 mm/hour during peak periods
• Coastal salt exposure — Katamanso is within 10–15 km of the coast; salt-laden air accelerates concrete degradation and shortens real-world service life
• High humidity year-round — promotes mould, damp, and hidden water damage inside walls
• Rapid new construction — many homes are 1–5 years old and just entering their first serious waterproofing decision cycle

Comprehensive polyurethane waterproofing during the early years of a home's life delivers the best long-term value — sealing the building envelope before serious damage takes hold.

The Value Proposition for Similar Projects

• Cost per m² is lower on comprehensive jobs than on piecemeal repairs — large-area pricing benefits from setup efficiency
• Design life — 20 years with proper polyurethane liquid membrane application
• Warranty — 3-year workmanship + 3-year manufacturer material
• Material planning — budget 0.41 kg/m² across two coats as a working figure
• Timing — best done in dry-season windows (November through February in Greater Accra)
• Access — straightforward on single-storey homes; requires additional planning for 2+ storey properties

Fest Ghana Limited Service Coverage in Kpone Katamanso Area

• Kpone Katamanso (opposite DPS International and surrounding areas)
• Katamanso Township
• Ashaiman and neighbouring communities
• Tema (all communities)
• Prampram and coastal areas
• Nationwide for medium and large projects

Considering Comprehensive Waterproofing for Your Home?

Call us for a free site assessment. We visit, measure your surfaces, diagnose any current or emerging problems, and provide a written fixed-price quote within 24 hours.

• Phone: 0555 548 001 or 0241 737 026
• WhatsApp: Chat on WhatsApp — send photos of your roof/walls for an initial estimate
• Book online: Book a waterproofing service
• Buy DIY materials: Shop waterproofing products

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Related Case Studies from Fest Ghana Limited

• Reinforced Parapet Waterproofing — Madina, Accra
• Concrete Floor Waterproofing — Tantra Hill, Accra
• Concrete Gutter Waterproofing — Tema Community 10
• Sump Pit Waterproofing — Kasoa Filling Station
• See the full Fest Ghana Limited Case Study Portfolio

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Related Location Service Guides

• Waterproofing Services in Tema — Complete Guide
• Waterproofing Services in East Legon
• Waterproofing Services in Kasoa

Fest Ghana Limited is a Ghanaian-owned waterproofing specialist. We install and supply professional waterproofing solutions across the Katamanso corridor, Tema, Accra, Kumasi, and nationwide Ghana — with a 3-year workmanship warranty on every job and a 20-year design life on properly installed polyurethane membrane systems.