Where’s the job?

Overview

• Installing new chimney structures—carefully constructing a safe, code-compliant chimney from the base through the roof.

• Skill level: 4 / 5 (involving detailed masonry work, structural planning and adherence to local building codes).

• Typical duration: 2 – 5 days depending on design complexity, weather conditions and permits required.

Safety First

• Ensure the structure’s stability by consulting building regulations and reinforcing foundations where needed.

• Use appropriate scaffolding and wear PPE (including gloves, hard hats and safety boots) during construction.

• Verify that your plans meet local fire safety and building code requirements, including chimney height and clearance.

• Always check that any electrical or gas appliances connected to the chimney system are installed by a certified professional.

• Only proceed if you have the proper permits and a clear understanding of the required structural supports.

Tools & Materials

Step-by-Step

1. Planning & permissions – review local building codes, secure permits and plan the design.

2. Prepare the foundation – ensure a level, stable base and integrate any necessary damp-proof measures.

3. Build the chimney base – lay the first courses of bricks or blocks to form a solid start.

4. Construct the masonry – continue building, ensuring even joints and proper curing of the mortar.

5. Install the flue liner – carefully position the liner to enable safe expulsion of smoke.

6. Finish the masonry – integrate flashing, seal gaps and tidy up mortar joints.

7. Install the chimney cap – secure the cap to protect against rain, debris and downdraughts.

Completion Checks

• Chimney is structurally sound, with even mortar joints and proper flue liner installation.

• All components meet local building codes and fire safety regulations.

• Final inspections (if required) confirm the chimney’s compliance and safety.

• The chimney cap is secure, and flashing/fits are correctly installed to prevent water ingress.

When to Call a Pro Instead

If the installation involves complex structural changes, advanced masonry techniques or the integration of modern heating appliances, consider hiring a qualified building professional or certified chimney sweep to ensure safety, structural integrity and compliance with all regulations.