Ashaiman Compound House Waterproofing — Multi-Family Roof & Gutter Case Study (2026)
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A shared compound house roof in Ashaiman affecting multiple tenant units was waterproofed with a fleece-reinforced polyurethane system after years of localised patching failed to stop recurring leaks across several rooms. Waterproofing the full shared roof area in one coordinated job resolved leaks in all affected units and cost less per household than continued individual patch repairs.
The Challenge: One Roof, Multiple Households
Compound houses are a defining feature of Ghanaian residential architecture, especially in dense urban areas like Ashaiman — multiple independent tenant units sharing a single roof structure, courtyard, and often a single landlord managing the building. When the shared roof develops leaks, the damage rarely stays contained to one unit: water tracks along the underside of the slab and along gutter runs, showing up as ceiling stains and wall damp in rooms far from the original crack.
In this Ashaiman project, the landlord had previously authorised small, reactive patch repairs — sealing a crack here, applying a leakage tape there — each time a tenant reported a new leak. After several rainy seasons, at least four separate units were showing recurring water damage, and the patchwork approach was costing more in repeat call-outs than a proper system would have cost upfront.
Site Assessment Findings
Our free site assessment found root causes consistent with what we see across many older compound houses: the original roof coating had fully worn through in several areas, gutter runs had inadequate falls causing ponding during heavy rain, and multiple previous patch repairs had failed because they were applied to a degraded substrate without proper surface preparation.
The ponding mattered as much as the worn coating. Standing water in shared gutters that nobody had cleared for years was doing more damage than the rain itself — a pattern covered in our roof ponding guide.
The System We Applied
Rather than continuing to patch individual failure points, we recommended waterproofing the entire shared roof and gutter system as one continuous job using fleece-reinforced polyurethane membrane at the gutters and details — the same crack-bridging approach used on our Tema Community 10 concrete gutter project nearby. This eliminates the weak seams between separate patch jobs that had been letting water back in.
| Stage | Work Done |
|---|---|
| 1. Assessment | Free site assessment mapping all leak points and affected units |
| 2. Surface prep | Removal of failed patch repairs, cleaning, crack repair, gutter clearance |
| 3. Application | Two-coat polyurethane across the roof field, fleece-reinforced at gutters and details |
| 4. Handover | Warranty documentation issued to landlord for the full roof system |
Why a Coordinated Job Beats Repeated Patching
Patching each leak as it appears means paying for multiple call-outs, and each patch creates a new seam where old and new material meet — a common failure point. Waterproofing the full shared roof in one job removes those seams and covers every unit under a single warranty.
There is a second reason that matters more in a compound house than anywhere else. A patch repair has no continuous membrane behind it, so water entering anywhere on the roof simply travels under the slab until it finds a different room to appear in. Tenants then report a "new leak" in a unit that was previously dry, and the landlord pays again for a repair in the wrong place. Only a continuous system stops that cycle.
The Conversation to Have With Your Landlord
If you are a tenant in a compound house with a recurring leak, the roof is part of the building fabric and normally the landlord's responsibility — not something to keep fixing at your own cost inside your own room.
The argument that tends to work is arithmetic rather than complaint: four tenants paying separately for repeated patch repairs over three rainy seasons will usually have spent more between them than one coordinated job would have cost, and none of them will have a warranty at the end of it. A free assessment produces a written figure the landlord can weigh against what has already been spent.
Results
All previously affected units have been leak-free since the work was completed, and the landlord now has a single warranty document covering the entire shared roof rather than a scattered history of informal patch jobs with no documentation.
Keeping It That Way
On a shared roof, the one maintenance task that matters is clearing the gutters and outlets — twice a year, before and after the rainy season. It is nobody's individual responsibility in a compound house, which is exactly why it does not get done, and why so many shared roofs fail years before they should. Agree who does it, or the 20-year design life becomes ten.
Book a Free Assessment for Your Compound House
If your compound house in Ashaiman, Tema, or greater Accra has recurring leaks affecting multiple units, a coordinated waterproofing job is usually more cost-effective than continued patching. Book a free site assessment or call/WhatsApp 0555 548 001 — we offer same-day emergency response in Accra and Tema.