Chimney Breast Removal

Removing a chimney breast is a popular way to reclaim floor space and modernise a property, but it is a structurally significant operation that requires careful engineering design. If there is a chimney breast above the one being removed – on upper floors or in the loft – it must be supported by a suitable structural solution. Offset Engineering provides specialist structural design for chimney breast removal projects across the UK.

Structural Considerations for Chimney Breast Removal

When a chimney breast is removed at ground or first floor level, the chimney breast above – which may extend through upper floors and the roof – must be adequately supported. This is typically achieved using a gallows bracket arrangement or a steel beam, which transfers the load of the remaining chimney stack to the surrounding walls. The precise solution depends on the specific construction of your property.

Building Regulations Requirements

Chimney breast removal requires building control approval in most cases, as it involves a structural alteration. You will need to submit structural calculations and supporting documentation to your local authority building control or an approved inspector. Our engineers produce all the required documentation, ensuring your project proceeds safely and legally.

What Does Our Service Include?

Our chimney breast removal service includes a site visit to inspect the property and assess the chimney construction, structural design of the support system (typically gallows brackets or RSJ beams), full structural calculations for building control submission, specification notes for the contractor, and any supporting drawings required. We also advise on any planning considerations and temporary propping requirements during construction.