Is November or December a good time to waterproof a roof in Ghana?

Yes. As the minor rainy season ends in November, roofs dry out and the December-February dry season gives the longest reliable working window of the year. The only extra step is cleaning Harmattan dust off the surface before priming.

Should I wait until after Christmas to waterproof?

Waiting into January or February is fine for the work itself, but contractor calendars fill quickly before the April rains. Book an inspection in November so the job can be scheduled in the dry window rather than rushed in March.

Does Harmattan affect waterproofing?

Harmattan dust settles on roofs and prevents adhesion if it is not washed or blown off and the surface allowed to dry. Low humidity is otherwise helpful for curing. Midday roof temperatures can reach 75°C, so coats are best applied in the morning or late afternoon.

How long does a roof waterproofing job take?

A typical 100-200 m² house roof takes 3-5 working days including preparation, crack treatment, primer, two coats and curing between coats, provided there is no rain.

Waterproofing in November-December 2026: Best Time in Ghana?

October 24, 2026

November to February is the best time of year to waterproof a roof in Ghana. The minor rainy season tapers off in November, roofs dry out, and the dry season gives weeks of reliable working weather. Book your inspection in November, apply in the dry window, and you go into the April rains with a cured membrane instead of a rushed one.

The waterproofing calendar in Ghana

Period	Weather	What to do
Sep-Nov	Minor rainy season	Note where it leaks. Photograph stains. Emergency repairs only.
Late Nov	Rains taper off	Book inspection while leaks are fresh in memory
Dec-Feb	Dry season, Harmattan	Best application window. Clean dust first.
March	Heat, first storms possible	Still workable but calendars are full
Apr-Jul	Major rainy season	Too late for planned work

Why November is the month to book, not just to wait

The leaks you had in October are the best survey data you will ever get. In February, when the roof is bone dry, the stain on the bedroom ceiling looks old and the crack on the parapet looks harmless. Book the inspection while you still remember which room leaked during which storm. Write it down: room, date, how heavy the rain was.

December-specific considerations

Guests and short-lets. Many homes and guesthouses are full over Christmas. Waterproofing involves roof access, some noise and solvent smell during application. If the house will be full, schedule for the first two weeks of December or after New Year.
Harmattan dust. Dust is the main adhesion risk in this season. The roof must be swept, washed or blown clean and allowed to dry before primer. We have seen coatings peel because they were applied onto a fine film of Harmattan dust — see why waterproof coating peels off.
Midday heat. Roof surface temperatures can reach 75°C under a UV index of 11+. We apply in the morning and late afternoon so coats don't skin too fast.
Thermal cracking. The dry season has the largest day-night swing — around 20°C. Cracks are at their widest in the cool early morning, which is a good time to mark them.

What you can do yourself this month

Clear gutters and outlets now. It is free and it fixes some "leaks" outright.
Check where water stood after the last rain. Ponding that clears in a few hours is not a crisis; ponding that remains a day later is.
Patch active drips with Leak Seal Tape (GHS 250) or Waterproof Leakage Spray (GHS 200) so the ceiling survives until the main job.

Plan the material

If you're doing it yourself in the dry season, buy enough for two full coats. Plan on 1 kg of coating per square metre across those two coats. A 10kg Polyurethane Coating (GHS 1,000) covers 20 m² on one coat, which is 10 m² finished with two coats. The 5kg (GHS 500) finishes 5 m². So a 100 m² roof needs about 100 kg — ten 10kg buckets — before wastage and details. One coat is not waterproofing; it pinholes and fails in the first heavy rains, which in the dry season you will not discover until April.

Warranty and design life

Installed by Fest Ghana, the membrane carries a 3-year workmanship warranty plus a 3-year manufacturer material warranty, and a 20-year design life. The warranty is the period we return and fix it at our cost; the design life is how long the membrane is engineered to keep performing.

Reserve a dry-season slot

Book your inspection or call 0555 548 001. We will schedule the work for the dry window.

Related Resources

Fest Ghana Limited is the trading name of FGL Waterproofing Solution Limited Company, a company registered in Ghana — Registration No. CS218171026. Company information.

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