Chimney Breast Removal

Removing a chimney breast in the UK involves several steps and requires compliance with building regulations. Here is a detailed guide on how to remove a chimney breast, including the necessary supports and regulations to follow:

1. Understanding the Scope of Work

• Chimney Breast: The part of the chimney that projects into the room.
• Chimney Stack: The part of the chimney that extends above the roofline.

2. Planning and Permissions

• Structural Assessment: Hire a structural engineer to assess the impact of removing the chimney breast. They will determine if the chimney is load-bearing and what support is needed.
• Building Regulations Approval: Submit an application to your local building control body. This is mandatory as the removal affects the structural integrity of the building.
• Party Wall Agreement: If the chimney breast is on a party wall, you will need to serve a party wall notice to your neighbors and get their agreement.

3. Required Supports

If the Entire Chimney Stack is Removed:

• No Additional Support: If the entire chimney, including the stack, is removed, additional supports might not be necessary. However, a structural engineer must confirm this after a thorough inspection.

If Only the Chimney Breast is Removed (and the stack remains):

• Steel Beam/Lintel: Install a steel beam or lintel to support the remaining structure above. This is crucial if the chimney breast supports any part of the building.
• Gallows Brackets: Sometimes used to support the remaining stack, but their use is subject to approval by building control. They are less common and may not be suitable for all types of buildings.

4. Removal Process

Preparation:

• Clear the room and cover furniture with dust sheets.
• Ensure adequate ventilation and wear protective gear.

Temporary Supports:

• Install temporary supports (acrow props and strongboys) to hold up the structure while removing the breast.

Removing the Chimney Breast:

• Start from the top and work downwards, removing bricks carefully.
• Use a hammer and chisel for precision, and a bolster chisel for larger sections.
• Ensure debris is removed safely and disposed of according to local regulations.

Installing Permanent Supports:

• Place the steel beam or lintel as per the structural engineer’s specifications.
• Secure the supports in place and ensure they are correctly fitted and level.

Making Good:

• Repair and make good the walls, floor, and ceiling where the chimney breast was removed.
• Plaster and redecorate as needed.

5. Compliance and Inspections

• Building Control Inspection: Have the work inspected by the local building control officer to ensure compliance with regulations. They will issue a completion certificate if the work meets all standards.
• Party Wall Surveyor: If applicable, ensure the party wall surveyor inspects and approves the work.

6. Post-Removal Considerations

• Check for Damp: Removing a chimney breast can sometimes lead to damp issues. Ensure the area is well-sealed and ventilated.
• Fire Safety: Update any fire safety measures, such as smoke detectors, especially if the chimney was previously used.

Regulations to Note

• Building Regulations (Part A): Covers the structural safety and integrity of buildings.
• Party Wall Act 1996: Ensures that work affecting shared walls is properly managed and agreed upon by all parties.
• Planning Permission: Not usually required unless the building is listed or in a conservation area. However, always confirm with the local planning authority.

By following this guide and ensuring compliance with regulations, you can safely and effectively remove a chimney breast in the UK.