How to Lay a Brick Wall: A Complete Beginner's Guide

Building a brick wall is one of the most rewarding masonry projects you can tackle. Whether you're constructing a garden boundary, a retaining structure, or a feature wall, understanding the core techniques will set you up for a result that's both structurally sound and visually impressive. This guide walks you through the entire process from start to finish.

What You'll Need

  • Bricks – calculate your quantity based on wall dimensions (roughly 60 bricks per square metre for a single-skin wall)
  • Mortar – a standard mix of 1 part cement to 4–5 parts building sand
  • Spirit level – essential for keeping courses straight and plumb
  • Brick trowel – for applying and shaping mortar
  • Bolster chisel and club hammer – for cutting bricks to size
  • Builder's line and pins – to keep rows level across a long run
  • Jointing tool or pointing iron – for finishing mortar joints

Step 1: Prepare Your Foundation

No brick wall will last without a solid footing. Dig a trench at least 150mm deep (deeper in frost-prone areas) and pour a concrete foundation that's roughly twice the width of your wall. Allow the concrete to cure for at least 48 hours before laying your first course.

Step 2: Set Out Your First Course Dry

Before mixing any mortar, lay your first row of bricks dry (without mortar) to work out spacing and identify where cuts will be needed. This saves time and wasted material. Mark the positions with chalk or a pencil on the footing.

Step 3: Mix Your Mortar

A good mortar mix for general brickwork is 1 part Portland cement to 4 parts builder's sand, with just enough water to achieve a smooth, pliable consistency — not sloppy or crumbling. Mix only what you can use within about 90 minutes, as mortar stiffens quickly.

Step 4: Lay the First Course

Apply a 10mm bed of mortar along the footing and press your first brick firmly into place. Use a spirit level to check it's level in both directions. Butter the end of each subsequent brick before placing it, maintaining a consistent 10mm joint throughout. This first course is the most critical — take your time getting it right.

Step 5: Build Up the Corners First

Experienced bricklayers always build the corners (called quoins) up several courses before filling in the middle. This gives you fixed reference points to run your builder's line between, ensuring each course stays level and aligned.

Step 6: Maintain a Running Bond Pattern

The most common bond pattern is the stretcher bond, where each brick is offset by half a brick length from the one below. This staggered arrangement distributes load and prevents continuous vertical joints that would weaken the wall. Never allow vertical joints to align between consecutive courses.

Step 7: Check Constantly for Level and Plumb

Use your spirit level frequently — both horizontally along each course and vertically against the face of the wall. Even small errors compound over multiple courses and become very difficult to correct later.

Step 8: Finish the Joints

Once the mortar has begun to stiffen (usually 30–60 minutes after laying), run your jointing tool along each joint to create a neat, weatherproof finish. The most common profiles are:

  • Concave (bucket handle) – the most weather-resistant option for exterior walls
  • Flush – clean and modern, but less waterproof
  • Recessed (raked) – bold shadow lines, best for sheltered locations only

Common Mistakes to Avoid

  1. Using too much water in the mortar mix, which weakens the joint
  2. Skipping the foundation or using an inadequate base
  3. Letting mortar dry out on brick faces — clean as you go with a damp cloth
  4. Rushing through the first course without levelling carefully
  5. Not allowing adequate curing time before loading the wall

With patience and attention to detail, even a first-time bricklayer can produce professional-quality results. Take your time, keep things level, and enjoy the process — there's something deeply satisfying about a well-built brick wall.