NBS Source


A robust, pliable DPC with high bitumen content on a high strength polyester base exceeding the specification of BS 6398 Type A.

Can be used in conjunction with Xtra Seal QD Bitumen Primer and Preformed Cavity Trays.

General information

Specification data - Bitumen-based damp-proof courses and cavity trays

Product Reference

Xtra-Load Nubit

Roll width

100–1000 mm; insert requirements.



Xtra-Load joint support system

Standard product features


  • Coating: Fine silica sand both sides.
  • Thickness: 2–3 mm.
  • Roll length: 8 m.

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