Therma-kerbs Thermadome kerbs are designed to be used in conjunction with Thermadome rooflights and are finished in white internally. Therma-kerbs represent excellent value for money and will enhance the overall appearance of the rooflight. The heights of Therma-kerbs are 150 mm, 300 mm and 500 mm.
The standard Therma-kerb is made from extruded white PVC-u. The multi-chambered construction gives an exceptionally robust and thermally efficient performance. This kerb is suitable for most roof finishes.
Therma-kerbs can also be supplied in GRP which have integral 10 mm polyurethane foam insulation and robust dome fixing and mounting flanges. It can be used with any roofing material.
Special GRP versions are also available 150, 300 and 500 mm high. These have 20 mm of integral insulation.

Alu-kerbs are purpose made to fit nonstandard roof openings. Alu-kerbs are fabricated from mill finished aluminium in an all-welded construction and supplied with a white foamed PVC-u insulating lining as standard. If required, additional insulation can be applied externally prior to waterproofing.

Alu-kerb adaptors, collars and flanges enable standard sized Thermadomes to be fitted where a direct size match is not available. They are purpose made to fit any size or type of existing builder’s kerb or proprietary upstand.