How to Lay Clay Bricks — A Step-by-Step Ghana Guide

Before you start

Clay bricks absorb water from mortar more quickly than sandcrete blocks do. If you don't account for this, your mortar dries before it bonds, and your wall comes down. The fix is simple: hose the bricks briefly before laying, especially in hot Ghanaian sun.

Have your mortar mix ready (see mix ratios below), string line set, spirit level on hand, and enough bricks stacked within arm's reach of the work area.

Mortar mix for clay brick

Clay brick wants a softer mortar than sandcrete. The standard mix:

• •1 part cement : 1 part lime : 6 parts sand (by volume)
• •Or, if no lime available: 1 part cement : 5 parts sand + plasticiser
• •Water to workable consistency — stiff enough to hold shape, wet enough to spread cleanly
• •Mix in small batches; do not re-temper dried mortar with more water

Step 1: Set out

Mark the wall line on the foundation. Lay the first course dry (without mortar) to check spacing — any awkward cuts should be identified now, not mid-way through. Adjust to avoid tiny cuts at corners.

Step 2: First course

Spread mortar (10mm thick) on the foundation / DPC. Lay the first brick, tap down to level. Second brick with a 10mm head joint. Continue to end of course. Check level in three dimensions (along, across, and end-to-end).

Step 3: Corners and levelling

Build corners up first (4–5 courses). String-line between them. Fill in the middle against the string line. Re-check level every 3 courses — small errors compound.

Step 4: Bond pattern

Running bond (each course offset by half a brick) is the standard. For structural walls this is all you need. For decorative work, English bond (alternating header and stretcher courses) or Flemish bond add visual interest and pay premium rates.

Step 5: Pointing

When mortar is thumb-print firm (not wet, not hard), tool the joints. A weather-struck joint sheds water well. A raked joint looks striking but must be well-protected from driving rain.

Common mistakes

The five mistakes that show up most often on Ghanaian sites:

• •Mortar too strong (2:1 or 3:1 cement-to-sand) — cracks the bricks under thermal stress
• •Not wetting bricks — mortar dries before bonding
• •Skipping the dry layout on first course — awkward cuts at corners
• •Slab-thick mortar joints (20mm+) — wall looks amateur, uses too much mortar
• •No DPC between foundation and first course — moisture rise