Thermally Broken Lintels


Thermally Broken Lintels

Thermally broken steel lintels, including IG, Keystone, and Catnic Hi-Therm lintels, are designed for masonry cavity wall construction. Compared to traditional cavity lintels, they provide robust structural support over doors, windows, and other openings while significantly reducing linear thermal bridging and heat loss. These advanced lintels feature galvanized steel components on either side of a high-performance expanded polystyrene (EPS) insulation core, ensuring both strength and superior thermal efficiency.


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Thermally broken steel lintels such as the IG, Keystone, and Catnic Thermally Broken Lintels (or Hi-Therm) are used in masonry cavity wall construction. When compared to traditional cavity lintels, it offers support over structural openings such as doors and windows while minimising linear thermal bridging heat loss. The system is comprised of Galvanized steel components on either side of an expanded polystyrene (EPS) insulation core.

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