Lintel Calculations - London & Essex
We provide lintel calculations for new doors, enlarged window openings, garage conversions, knock-throughs, and other residential wall alterations. If you are creating an opening in masonry and need Building Control approval, this page is the direct service page for the design work.
Typical lintel projects
- Widening or adding a new window opening
- Creating a new external or internal doorway
- Garage conversion openings and wall changes
- Replacing undersized or failing lintels
- Smaller openings that do not require a full steel beam
What you receive
- Lintel sizing based on span, loading, and wall type
- Bearing length and support detail recommendations
- Calculation pack suitable for Building Control submission
- Advice on when a steel beam is needed instead of a lintel
- Clear guidance for your builder before work starts
Lintels vs steel beams
Some openings only need a lintel. Others need a larger steel beam calculation. We assess the opening, loading, and wall arrangement and specify the correct solution rather than defaulting to the heavier option.
This page exists to capture the smaller opening and lintel query set without changing your current steel beam page, which is already tuned more towards wall removal and RSJ searches.
Related services: chimney removal structural design and structural surveys for diagnosis-led projects.
Next steps
Talk to SBS and plan your project
Send through a sketch, plan or photo and we'll come back with a clear written quote — no obligation. Most enquiries are answered the same working day. Phone, WhatsApp and email are in the footer.
Mon to Sat, 8am to 6pm. Most calls answered within 1 hour. Or message us on WhatsApp.
Where we work from
Two offices — Ilford (61 Cranbrook Road, IG1 4PG) and Tilbury (Brunel Close, RM18 8EJ) — covering Ilford, Tilbury, Thurrock, East London and Essex.
