Structural Waterproofing Design
BS 8102:2022
Compliant Design
CSSW Accredited · Co-author of the standard · Expert Witness
Independent Waterproofing Consultants
Major developers appoint CLW to own responsibility for basement waterproofing.
Our unique approach delivers robust design, best value procurement and contractor accountability.
- CSSW Accredited
- 25+ Years Experience
- BS 8102:2022 Co-author
Recommended by
What we do
Full waterproofing design responsibility.
All too often waterproofing design falls through a scope gap, is badly procured and ultimately fails. Resulting in tenant disruption and remediation. CLW closes the gap.
01
Structural Waterproofing Design
'Goldilocks' design. Not over, not under. Full design responsibility packaged in a performance specification.
BS 8102:2022 · CSSW + WDS
02
Best-Value Procurement
Performance specifications enable open tender among competent specialist contractors. Driving genuine competition, not single-supplier lock-in.
Open tender · Independence preserved
03
Contractor Accountability
Client-side throughout construction. Inspections at critical stages. Authority to challenge when work departs from design intent.
Site inspection · Submission review
Selected projects
Commercial developments across London.
CLW are trusted by leading commercial developers and project managers to take responsibility for basement waterproofing and ensure the delivery of dry basements.
Office · Southwark
220 Blackfriars Road
Client: JTRE London · Architect: EPR Architects
Office · EC2
75 London Wall
PM: Opera PM · Client: Castleforge Partners · Architect: ORMS
Civic · Fleet Street
Salisbury Square
PM: Avison Young · Client: City of London Corporation
Mixed Use · Soho
Holden House
Client: Derwent London · Architect: DSDHA
Office · Mayfair
33-35 Piccadilly
Client: Kier · Architect: DSDHA
Office · St James
10 Piccadilly
PM: Dendy Byrne · Client: Crown Estate
Waterproofing Wisdom Agent
CLW's specialist AI consultant — trained on two decades of basement-failure forensics.
Architects and project managers use it to cut through waterproofing complexity before CLW are formally appointed.
- Determine BS 8102 grade and waterproofing type for your scheme
- Review and benchmark a fee proposal or contractor quote
- Generate a waterproofing risk assessment from your GAs
- Read pre-construction packs and flag specification gaps
Drawn from CLW's forensic archive — the evidence base that underwrites our expert witness work.
Request access to the agent
Access is gated. We review applications individually and grant access to qualified design and development professionals.
What clients say
“CLW have done a good job on the BM project and have provided sound advice on fairly complicated waterproofing issues and have provided responses quickly and succinctly. The BM is very appreciative of CLW's input on the project and it is invaluable. At Civic we have enjoyed working with you.”
“I've worked with CLW on several projects now. They have shown outstanding value in picking up on issues early, guiding the design team and ensuring work on site complies with best practice. Working with CLW has given me confidence in our development and the basement waterproofing. I will absolutely be working with them again on the next project.”
“I know the CMT role is not a competition between disciplines, but I have felt that CLW as its own discipline has really excelled and ensured that the requirements and best interests of the Employer have continuously been upheld by Ben and his team.”
“I've worked closely with CLW on the Salisbury Square Development scheme, and they have shown outstanding value in picking up on issues early, guiding the design team and ensuring work on site complies with best practice. Working with CLW has given me confidence in our development and the basement waterproofing.”
“Johnny has put the interest of the client first. In a complicated civil engineering project he has ensured that all due considerations have been made. He has managed the contractor well and ensured his design is well communicated. Should a project require it I will in future be reaching out to CLW.”
“Derisking basement reuse required specialist waterproofing early in our design. CLW were a great addition to the design team and immediately showed their worth. The team have continued to show great value through collaboration with the main contractor during the PCSA; ultimately bringing clarity to the risk and enabling robust mitigation.”
“I worked with CLW on the 220 Blackfriars Road project and found their team to be very competent and professional. Their technical expertise on waterproofing design was valuable and allowed us to overcome some complex challenges.”
CLW credentials
The authority on basement waterproofing design.
CLW's team includes three registered Waterproofing Design Specialists and an ARB-registered Architect. Ben Hickman contributed to BS 8102:2022.
White papers & resources →25+
Years specialist experience
£10m
Professional indemnity
BS
8102
2022 contributor
Hours of specialist waterproofing consultancy delivered by CLW since April 2016
FAQ
Common questions
Practical answers on engagement, scope, BS 8102 and the Waterproofing Wisdom Agent.
What is BS 8102:2022 and why does it matter?
When should CLW be appointed on a project?
How is CLW different from a manufacturer or contractor?
What does a typical engagement involve?
What does the Waterproofing Wisdom Agent do?
CPD for architects, engineers, project managers
Book a 45-minute CPD on basement waterproofing risk.
Run for design teams in-house. Real failure case studies, not slides about products. BS 8102:2022 in practice.
Waterproofing Wisdom Agent
Have a basement project?
Ask CLW's specialist AI — trained on two decades of basement-failure forensics. Determine BS 8102 grade, review quotes, generate risk assessments.
Try the agent