Where’s the job?

Overview

• Traditional flint wall construction is a time-honoured method, using naturally rounded flints and lime mortar to create characterful, robust walls.

• Skill level: 3 / 5 (requires a steady hand, patience and experience with traditional materials).

• Typical duration: Several days to weeks, dependent on wall length and complexity.

Safety First

• Wear appropriate protective gear, including gloves and safety goggles, when handling heavy flints and mixing mortar.

• Ensure the work area is secure and stable, particularly if working at heights or near scaffolding.

• Check local weather conditions; damp or windy days can affect mortar curing.

• Use ladders or scaffolding with care to avoid falls, and secure them properly.

Tools & Materials

Step-by-Step

1. Lay a solid foundation – excavate and level the ground, ensuring proper drainage and support.

2. Mix the lime mortar to a creamy consistency, ensuring optimal adhesion.

3. Select and sort flints by size and shape to achieve a consistent, natural bond.

4. Begin laying the first course carefully, ensuring a level and even base for subsequent layers.

5. Continue building, alternating flints and mortar, maintaining good bonding and using a trowel to adjust joints.

6. Regularly check alignment and level; introduce iron ties if needed for additional structural support.

7. Once complete, clean excess mortar and allow the wall to cure properly before any further treatments.

Completion Checks

• Wall is level, plumb and exhibits a consistent bond throughout its courses.

• Mortar joints are neat, with no excess or unsightly gaps, and have cured properly.

• There are no loose flints or voids within the wall structure indicating sound construction.

• Adequate curing time has been observed before any additional work or finishes are applied.

When to Call a Pro Instead

If the flint wall forms part of a historically sensitive or listed building, or if structural concerns arise during construction, it is advisable to consult a professional mason or structural engineer to ensure compliance with conservation standards and safety regulations.