Section Navigation

Welcome to

The website of Rawell Environmental Ltd.

We are the UK-based manufacturers of RAWMAT® HDB pre-hydrated sodium bentonite Geosynthetic Clay Liners (GCLs), and RAWSEAL® Waterstops.

We have been producing waterproofing products since 1976 and are the world's only producer of a BBA-certified and ISO-accredited pre-hydrated GCL.

Whether you're an Architect, Civil Engineer or Contractor, we have a range of waterproofing solutions across a range of product application types, be it Petrochemical Lining, Structural Waterproofing, Landscaping or Environmental Protection.


  • Manufacturers of RAWMAT® HDB Membranes
  • RAWSEAL® Waterstops
  • For Petrochemical Lining Applications
  • For Structural Waterproofing Applications
  • For Landscaping Applications
  • For Environmental Protection Applications

Login Status

You are not currently logged-in. Please Register & Log-in to download documentation.