Technical number: 01753 944200

Sales number: 01753 944210

Technical Hotline 01753 944200
Customer Sales 01753 944210


RIW stands for 'Remember It's Waterproof', from an ad slogan in 1921. We have almost a century of experience, with a modern range of waterproofing solutions for above, below and at ground level.

We aim to offer complete waterproofing assurance to Architects, Engineers and Contractors. From sheet applied systems to structural drainage, sodium bentonite systems to cement based waterproofing, DPCs, gas proofing and movement joints; RIW has the waterproofing solution for your project. Innovative fast track waterproofing solutions complement classic liquid systems such as RIW LAC; renowned throughout the industry as 'two coats of RIW'.

We are well known for our Technical Advisory Team, with both in-house and field Technical Advisors offering a full consultation and design service. Our team will take care of your waterproofing strategy from start to finish, including technical advice and guidance, preparation of sectional details, approval of drawings, site inspections and ongoing site support. We promise to provide tailored project support throughout the specification and installation process, with Major Projects receiving a bespoke service.