What Is Pointing?

Pointing is the process of filling and finishing the mortar joints between bricks or blocks in a wall. It refers both to the initial finishing of joints during construction and to repointing — raking out and replacing deteriorated mortar in existing walls.

Types of Pointing

• Flush pointing — The mortar is pressed flat with the brick face. Simple, clean appearance. Common in modern construction.
• Bucket handle (concave) — The mortar is pressed inward with a rounded tool (or length of pipe). The most common joint profile in UK domestic brickwork. Compresses the mortar well and sheds water effectively.
• Weatherstruck — The mortar is angled to shed water downward. Good weather resistance but can look untidy if not done well.
• Recessed — The mortar is raked back from the brick face to create a shadow line. Looks attractive but exposes the bottom edge of the brick above to water penetration. Not recommended for exposed locations.
• Ribbon / strap pointing — Mortar raised proud of the brick face. Generally considered poor practice as it traps water on the brick ledge.

When to Repoint

Repointing is needed when mortar joints have deteriorated — crumbling, cracking, or falling out. Signs include visible gaps in joints, water penetration through the wall, and loose or powdery mortar that crumbles when scraped with a key. Well-pointed brickwork in a sheltered location can last 50+ years, but exposed elevations may need repointing every 25–30 years.

Mortar Mix for Pointing

The pointing mortar should be no harder (stronger) than the original mortar or the bricks themselves. For most domestic brickwork, a 1:1:6 (cement:lime:sand) or 1:5 (cement:sand with plasticiser) mix is suitable. For older properties with soft lime mortar, use a lime mortar (1:3 NHL hydraulic lime:sand) to avoid damaging the bricks.

Cost of Repointing

Repointing typically costs £25–£45 per m² in the UK, depending on access, joint condition, and location. A typical semi-detached house front elevation might cost £1,500–£3,000 including scaffolding.