NBS Source
List your products

Made from natural cork granules, steam baked and pressure bonded into boards. The raw materials are obtained from fully renewable and sustainable sources, and production of finished product consumes the lowest amount of embodied energy of any insulation type. For use as a thermal insulation board in warm roof assemblies, as an integral part of a waterproofing system. Not suitable for inverted roofs.

General information
Specification data
Product Reference



40 mm

50 mm

60 mm

75 mm

100 mm

Tapered ___

Standard product features

Board size:

1000 x 500 mm.



Thermal Conductivity:

0.038 W/m°C.

Product Options


Available as a preformed modular tapered system to standard gradients of 1:40, 1:60 and 1:80.