Thermally Broken Lintels

Catnic’s latest innovation is the biggest shake up in steel lintel design for a generation. An elegant, simplistic design derived from extensive research and rigorous development testing, offering a sophisticated, practical solution to the latest changes in Building Regulations. TBL is a patent pending range providing the most thermally efficient steel lintel solution on the market.

Our team will contact you within 24 hours, for urgent enquiries please call 02920 337900

NOTE: Quotes may take up to 5 days to be processed

  • 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.

Independently verified by the Building Research Establishment. See for further details and certification.