
75 London Wall
Project Manager: Opera PM | Client: Castleforge Partners | Architect: ORMS
Our unique approach delivers ‘Goldilocks design’ (it’s just right), empowers best value procurement and holds the contractor team accountable.
Trusted by leading developers and project managers




Basement waterproofing is high risk. The first step in mitigating that risk is understanding it.
In just three minutes you can receive a comprehensive waterproofing risk report, together with some useful pointers on how that risk can be reduced.
“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 the best practice.
Working with CLW has given me confidence in our development and the basement waterproofing. I would highly recommend engaging with them on any development with a basement.”
Jianxi Cheng, Director, Avison Young
All too often waterproofing design falls through a scope gap, is badly procured and ultimately fails resulting in tenant disruption.
CLW collaborate with design teams to develop a ‘Goldilocks’ waterproofing design and we then package that in a thorough performance specification. This allows for open tender amongst competent specialist contractors AND allows us to hold them accountable throughout the build.

Project Manager: Opera PM | Client: Castleforge Partners | Architect: ORMS

Project Manager: Avison Young | Client: City of London Corporation

Project Manager: Cumming Group Ι Client: Whitbread Group PLC Ι

Project Manager: Gardiner & Theobald I Client: Castleforge Partners Ι Architect:

Project Manager: Gleeds | Client: Nuveen Real Estate | Architect: Eric Parry Architects

Client: Arcadis Ι Architect: Kohn Pederson Fox CGI: Kohn
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.
Jianxi Cheng — Director, Avison Young
CLW is the leading authority on basement waterproofing design. Our team includes three registered Waterproofing Design Specialists and an ARB registered Architect. We helped write BS 8102:2022 and we serve as expert witness on major disputes.
We’ve developed a unique approach to achieving full waterproofing design responsibility, and we love to share our wisdom.
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.
Miguel Bronze — Project Director, EPR Architects
We are independent waterproofing consultants who work with commercial developers who are tired of basement waterproofing scope gaps, program and cost uncertainty, poor procurement and defects. Our expertise will help you save money and achieve the right waterproofing design, best value procurement AND contractor accountability — even if you don’t think you need it.
Our free Risk Report identifies where risk lies, quantifies it, and shows you how to reduce it. Three minutes to clarity.
Get your free Risk Report