A thermal break is an insertion of an insulating material, such as polyamide, which interrupts the thermal transfer through an architectural aluminium profile.
Aluminium profiles consist of two parts that are interconnected by insulating material - polyimide tape of various dimensions (14.8 mm, 16 mm, 18 mm, 28.6 mm, 31.6 mm).
Polyimide tapes can stand up to high-temperature powder coat and anodizing operations, and feature an exceptionally thin backing that resists tears, abrasion and the effects of aging. They insulate more than 500 times better than aluminium, so thermal break profiles have a much lower Uf value.
Thermally broken profiles in combination with appropriate filling (glass, panel, etc.) are used in the occasion where high thermal insulation requirements have to be met. Polyamide prevents the passage of heat from the inner part of the aluminium profile to the outer part and the other way around which creates an insulated barrier.
Profiles with a thermal bridge are used for those elements and typologies, which must meet the thermal insulation and are used for residential and business premises.