About us

a family run business

Well-respected independent contractors

We’re a family run business, and we established Cannon Clarke Ltd in 1986. We’ve grown from a small set-up to a team of over 22 staff, which has completed around 26,000 jobs.

Our business is built on trust and respect and we continue to keep family values at the heart of the way we do things. With Cannon Clarke you’ll receive a highly experienced team of independent contractors, who pride themselves on delivering a top quality service to you.

Our Guarantees

All new work carried out by Cannon Clarke Ltd comes with a long-term guarantee.

Cannon Clarke Ltd promises our customers:

• Friendly and helpful first telephone contact
• Survey booking to fit your schedules and needs
• Timely survey report with specific, cost effective and detailed quotation
• Work booked in to fit in with your life & timelines
• Our helpful, well trained and experienced staff carry out high-quality work
• Supervision and support through Contracts Management team
• Builders clean finish after completion of work

Our experts


With over 30 years’ experience, it’s unlikely that we meet a problem we haven’t fixed before. We’ll give you an accurate estimate of the work involved in your project and how much it will cost. However tricky your project is, we’ll complete it with precision and expertise.


We’ve built a durable business because we deliver a trustworthy service. That’s why we have so much repeat business and how we’ve retained our long-term clients. Our reputation for meticulous work sets us apart as the go-to experts in Bristol and the South West.


You’re in safe hands with our Certificated Surveyors in Structural Waterproofing, which is the gold-standard qualification for the work we do. Cannon Clarke Ltd is itself:

  • A long-standing member of the British Structural Waterproofing Association
  • Approved waterproofing contractors with Vandex International (since 1988)
  • Approved contractors for all Delta waterproofing systems (since 2003). Our Installer Registration number is 5079.
  • Verified by BS:8102-2009 standards, so all our work meets quality criteria
  • We’re validated by the key players in our industry.

Guaranteed quality

Every product we use in your project is carefully selected to give you the very best long-term performance. We review all the available installation systems regularly to make sure that you’re receiving the most up-to-date technology. That’s how we’ve developed our reputation for integrity and a conscientious service.

Our Process


We start by conducting a thorough survey of the space you want to waterproof. There's usually a fee for our initial consultation, which is refundable on completion of works.


Scoping discussion

We collaborate with you to marry your objectives with our findings from the survey. We’ll discuss how you want to use the space when it’s finished and the best way of achieving your vision.



Once we have the physical specifications, and your input on your requirements, we’ll design a system that works for you.



We’ll send you a specification, together with a report which explains the technical aspects. We’re happy to chat through this with you and make any changes you’ve identified.


Work begins

With an approved plan in place, we’ll get to work on the date we’ve agreed between us.


Contact us to book a site survey