Thermally Broken Lintels

The Catnic Thermally Broken Lintel, or TBL, is a type of thermally broken steel lintel for use in masonry cavity wall build-ups. It provides support over structural openings such as doors and windows, while minimising linear thermal bridging heat loss compared to conventional cavity lintels.

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    How to select a lintel

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    How to install a Cavity Wall lintel

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    How to install a Thermally Broken lintel

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  • The only Lintel to provide a guaranteed linear thermal transmittance Psi values 0.05 W/mK or less
  • Safe working loads in line with Catnic’s existing Cavity wall lintels
  • Manufactured from powder coated galvanised steel
  • Options are available to suit cavities from 90 to 165mm, in standard, heavy and extra heavy duty performance categories

A unique design, providing a complete thermal break between inner and outer leafs with NO brackets, resulting in outstanding thermal performance always 0.05 W/mK or less.