Birtley ST150 150mm Thermally Broken Cavity Lintel

Birtley Supatherm ST150 Thermally Broken Cavity Wall Lintel — 150mm Cavity

The Birtley Supatherm ST150 is a standard duty thermally broken cavity wall lintel designed for 150mm cavity construction. Delivering up to 80% reduction in heat loss compared with standard cavity wall lintels, the ST150 is engineered to help meet Part L Building Regulations and the Future Homes Standard in wider cavity wall builds.

Available in 1200mm, 1350mm, and 1800mm lengths to suit a range of standard opening widths. The Supatherm design avoids the propping typically associated with single leaf lintels and is suitable for all types of masonry and cavity wall construction.

Note: Not suitable for point loads or concrete floors.

Key Features

• Up to 80% reduction in heat loss vs standard cavity wall lintels
• Thermally broken design — minimises cold bridging at the lintel position
• Supports compliance with Part L Building Regulations and the Future Homes Standard
• Suitable for all types of masonry and cavity wall construction
• Avoids propping associated with single leaf lintels
• Cavity width: 150–165mm
• Available lengths: 1200mm, 1350mm, 1800mm
• Manufactured by Birtley to BS EN 845-2 standards

Typical Applications

• Standard openings in wider cavity masonry wall construction (150–165mm cavities)
• New build residential projects targeting Part L and Future Homes Standard compliance
• Extensions and renovations requiring thermally efficient cavity lintels in wider wall builds

Need help selecting the right Supatherm lintel? Contact our lintel experts for advice and nationwide kerbside delivery.