Thin Joint Lintels | Cavity Wall Construction


Hi Therm Lintel


200mm – 300mm


For standard loading conditions in 50mm wide thin joint cavity wall construction. To achieve loading figures lintels must be built in as shown with firmly butted perpendicular joints. The TJ/K lintel range can be supplied to suit wider cavities e.g. specify TJ/K-70 TJ/K-90. Lintels may be propped to facilitate speed of construction.


Designed for fast-track cavity wall construction the thin joint lintel can be used as two separate lintels when the contractor chooses to build and complete the inner leaf of the building prior to starting construction to the outer leaf. The “C section” is used for the inner leaf whereas the insulated angle lintel is used for the cavity and outer leaf. The Thin Joint steel lintel must be used in conjunction with lateral restraint clips.

The Thin Joint restraint clips are supplied free of charge and must be fixed to the blockwork by 3.3mm x 50mm galvanised nails. Allowance should be made for the movement of the entire structure due to settlement and shrinkage. Lateral restraint clip should be placed at 500mm centres each side of mid span.

The Thin Joint lintel is also recommended for thin mortar joint construction where joints are between 2mm and 6mm. This is particularly common when aerated blockwork is used.