Heritage & Historic buildings
external weatherproofing
Sympathetic Restoration: Preserving Timeless Architecture
At Cannon Clarke Ltd we take pride in our commitment to preserving the rich heritage and historic significance of buildings. Our work is deeply rooted in a philosophy of sympathetic restoration, where we understand and respect the unique fabric of each structure.
Grade 1 Listed Buildings
We specialise in the restoration and conservation of Grade 1 Listed buildings, ensuring that these architectural treasures maintain their historical integrity. Our team of experts is dedicated to meticulous craftsmanship, using traditional methods and materials to bring these structures back to their original glory.
Grade 2 Listed Buildings
The charm of Grade 2 Listed buildings lies in their historical and cultural value. Our expertise extends to the careful restoration and conservation of Grade 2 Listed structures, blending modern techniques with a deep understanding of their unique heritage.

Comprehensive Solutions for Preservation
Addressing Structural Issues
Damp Solutions: Our team tackles damp issues with precision, employing advanced techniques to protect the building’s structure without compromising its authenticity.
Timber Decay & Woodworm Solutions: We provide specialised treatments for timber decay, ensuring the longevity of wooden elements while maintaining the historical aesthetic.
Waterproofing of Basements: Preserving basements is crucial for the overall health of a historic building. Our basement waterproofing solutions safeguard against water damage and enhance the structural integrity.
Transformative Basement Projects
Basement Transformation
Revitalise the underutilised spaces beneath heritage buildings with our basement transformation services. From creating functional living spaces to preserving historical features, we bring new life to these often overlooked areas.
Long-Term Solutions with Environmental Sensibility
Our commitment extends beyond immediate restoration needs. We offer long-term solutions that are not only effective but also reversible, minimising the use of harsh chemicals. This ensures the preservation of heritage without compromising environmental sustainability.
Our Prestigious Portfolio
With a rich history of working on prestigious properties in Bath, Bristol, and beyond, Cannon Clarke Ltd stands as a trusted partner in the conservation and restoration of heritage and historic buildings. Our passion for preserving the past informs every project we undertake, contributing to the legacy of these architectural marvels.
Trusted Across Bath, Bristol & the South West
Cannon Clarke delivers domestic and commercial structural waterproofing across:
- Bath — heritage properties, basement conversions, retaining walls
- Bristol — modern developments, commercial units, residential refurbishments
- Somerset & Wiltshire — rural properties, cellars, below‑ground extensions
Trusted by:
- Surveyors
- Insurers
- Property managers
- Homeowners across the South West
Our reputation is built on technical accuracy, reliability and long‑term results.
Case Study Snapshots
Bath — Basement Conversion
Installed a full cavity drainage system with sump and pump, resolving long‑term damp issues and enabling a habitable living space.
Bristol — Commercial Unit
Applied cementitious waterproofing to retaining walls experiencing hydrostatic pressure, preventing water ingress during peak rainfall.
Somerset — Heritage Property
Designed a non‑intrusive waterproofing solution compatible with historic masonry and conservation requirements.
Compliance & Standards
Our waterproofing systems meet:
- BS 8102:2022 — Code of practice for protection of below‑ground structures where applicable
- Manufacturer installation standards
- Insurance‑backed guarantee requirements
All work is carried out by our employed trained specialists with extensive experience in below‑ground protection.
FAQs
What causes basement leaks?
Basement leaks are typically caused by hydrostatic pressure, poor drainage, failed membranes or structural cracks.
Do you follow BS 8102?
Yes. Where Applicable all waterproofing systems are designed and installed in accordance with BS 8102:2022.
Can waterproofing be added to existing basements?
Absolutely. We regularly retrofit waterproofing systems to older properties and heritage buildings.
How long does installation take?
Most projects take between 5–10 days depending on size and complexity. (larger projects will take longer.
Do you offer guarantees?
Yes. We provide manufacturer-backed and insurance-backed guarantees where applicable.
More information?
For reliable structural waterproofing, call Cannon Clarke or book a professional survey. We’ll assess your property, explain your options and provide a clear, compliant plan.
Our Process

Survey
We start by conducting a thorough survey of the space you want inspected. There's usually a fee for our initial consultation.
01

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.
02

Design
Once we have the physical specifications, and your input on your requirements, we’ll design a system that works for you.
03

Approval
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.
04

Work begins
With an approved plan in place, we’ll get to work on the date we’ve agreed between us.
05

