Building with Clay Bricks in Rainy Season Ghana — Practical Guidance

The two rainy seasons

Southern Ghana has two: April–July (major) and September–October (minor). The north has one, roughly May–October. If you're building in either season, you can't wait it out — you plan around it.

What to protect

Three things need rain protection:

• •Fresh mortar — driving rain washes out unset mortar from joints
• •Stockpiled bricks — water-saturated bricks bond less well to mortar and are heavier to handle
• •Cured wall tops — open wall tops collect water that freezes no danger here but saturates the upper courses

Cover tactics

Practical protection:

• •Cover brick stockpiles with tarpaulin weighted at corners
• •Cover wall tops at end of each working day with plastic sheeting
• •Don't lay bricks during active rain — freshly placed mortar washes away
• •Don't lay saturated bricks — wait for visible surface to dry
• •Cure walls under polythene for 24–48 hours after laying in wet conditions

Mortar in wet conditions

Reduce water in mortar mix slightly — bricks and atmosphere are already wet. Mix smaller batches. Use mortar within 60 minutes in wet weather (faster than dry season).

The schedule trade-off

You'll lose 1–3 days in a typical week to heavy rain during the major season. Plan for this; schedule non-brickwork trades (foundation prep, roofing material delivery, finishing) to fill rain days. Don't let the site sit idle.