Fixing and buying guide

Who this product is for

This cavity lintel is for builders, structural engineers, and experienced DIY customers installing windows, doors, or other openings in cavity wall construction. It is essential for load-bearing applications where masonry walls require structural support above openings.

Compatibility and sizing

The 2700mm length suits standard cavity wall openings. Before ordering, confirm the opening width and cavity construction type match this lintel's span. The S/K-150 profile is engineered for typical cavity widths in modern masonry construction. Check your building plans and structural specifications to ensure this lintel meets the load requirements for your project.

• Length: 2700mm — measure your opening width and add bearing allowance (typically 150mm minimum each end)
• Profile: S/K-150 — designed for standard cavity wall applications
• Material: Steel — provides reliable load-bearing performance
• Suitable for new build and renovation cavity wall projects

Installation and preparation

Proper installation is critical for load-bearing performance. The lintel must be bedded on both leaves of the cavity wall with adequate bearing length. Use mortar bedding to distribute loads evenly across the supporting masonry. Ensure both cavity leaves are level and prepared to receive the lintel before installation. The lintel should be positioned centrally within the cavity and fully supported on both sides.

• Check both cavity leaves are level and ready to receive the lintel
• Ensure minimum bearing of approximately 150mm on each leaf
• Bed the lintel in mortar to distribute loads evenly
• Confirm the lintel is positioned centrally within the cavity
• Allow mortar to cure fully before applying loads above the opening

Pre-installation checks

Before fitting, verify the opening dimensions match the 2700mm lintel length with adequate bearing allowance on both sides. Confirm the cavity width and construction type are compatible with the S/K-150 profile. Check that your building design and structural calculations specify this lintel for your application. Inspect the lintel for any damage in transit and ensure the cavity walls are properly constructed and level.