How much does balcony waterproofing cost in Ghana?

Balcony waterproofing in Ghana costs GHS 120-180 per square metre for an exposed concrete balcony, and GHS 200-260 per square metre where existing tiles must be lifted, the slab waterproofed, and new tiles laid. A typical 8 square metre balcony therefore ranges from roughly GHS 1,000 to GHS 2,100 depending on scope.

Why is balcony waterproofing more expensive per m² than a roof?

Balconies are small areas with a high proportion of detail. A 6 square metre balcony can have 10 metres of upstand, a threshold, a drainage outlet, and a balustrade with fixings penetrating the slab. Almost all the labour is detail work rather than open field, so the rate per square metre is higher even though the total is lower.

Do I have to remove balcony tiles to waterproof it?

Not always. If the tiles are sound and well bonded, a liquid membrane can sometimes be applied over them with a suitable primer, though the finish changes. If tiles are drummy, cracked, or the leak is coming through the bedding, the tiles must come up so the slab itself can be waterproofed and falls corrected.

Why does my balcony leak into the room below?

In most Ghanaian buildings the balcony slab was tiled with no waterproof membrane underneath. Water passes through the grout and bedding, sits on the structural slab, and finds its way through into the ceiling below. Tiles and grout are not waterproof — the membrane beneath them is what keeps water out.

Balcony Waterproofing Cost in Ghana — 2026 Price Breakdown

August 30, 2026

Balcony Waterproofing Cost in Ghana — 2026

GHS 120–180 per m² for an exposed concrete balcony. GHS 200–260 per m² where tiles must be lifted, the slab waterproofed and new tiles laid. A typical 8 m² balcony runs GHS 1,000–2,100 depending on scope.

Cost by Scenario

Scenario	Rate / m²	8 m² balcony
Exposed concrete, sound, no tiles	GHS 120–180	GHS 960–1,440
Coat over existing sound tiles	GHS 140–200	GHS 1,120–1,600
Lift tiles, waterproof, re-tile	GHS 200–260	GHS 1,600–2,080
Plus screed to correct falls	+GHS 60–90	+GHS 480–720
Plus ceiling repair below	—	GHS 800–2,500

Why the Rate Is Higher Than a Roof

A 6 m² balcony sounds trivial next to a 200 m² roof. It is not, per square metre.

That small balcony typically has:

~10 linear metres of upstand at walls and balustrade
A door threshold — the highest-risk detail on the whole balcony
One or two drainage outlets
Balustrade fixings penetrating the slab
An exposed edge or drip detail

Nearly all the labour is detail work. The open field is almost incidental. That is why the rate is higher and the job still takes most of a day.

What Drives Your Price

Factor	Effect
Tiles lifted vs coated over	Biggest single factor
Falls — does water drain or pond?	Screed adds GHS 60–90 / m²
Threshold height	Low threshold complicates detailing
Balustrade type	Through-slab fixings need collars
Floor level / access	Material handling above 2nd floor
Damage below already	Ceiling repair is separate

Why Balconies Leak in the First Place

Almost always the same reason: tiles were laid straight onto the slab with no membrane underneath.

Tiles and grout are not waterproof. Water passes through the grout lines, saturates the bedding, sits on the structural slab, and eventually finds a path through into the ceiling below. The tiles look perfect the whole time.

Secondary causes:

No falls. Water ponds instead of draining to the outlet.
Threshold too low. Water backs up over the door line in heavy rain.
Failed upstand. Membrane not carried high enough at the wall junction.
Balustrade fixings. Bolts drilled through the slab with no collar detail.
Blocked outlet. Cheapest problem to fix, frequently the actual cause.

The Correct Specification

Lift tiles if drummy, cracked, or if the leak is through the bedding
Repair the slab, correct falls to a minimum of 1:80 toward the outlet
Fleece-reinforce every upstand, the threshold, the outlet and all penetrations
Two coats polyurethane, second perpendicular to the first
Carry the membrane a minimum of 150 mm up all vertical faces
Flood test before tiling
Re-tile over the cured membrane with a suitable adhesive

Step 6 matters. Once tiles are down, a defect cannot be found or economically fixed.

Get a Fixed Price

Free site assessment, written fixed-price quote within 48 hours, 3-year workmanship warranty.

👉 Book Free Assessment · 0555 548 001

Related Resources

Back to blog

Item added to your cart