Crackstitching
Crack Stitching
Restoring Structural Integrity
Cracks in masonry can compromise the stability and appearance of your building. At Cannon Clarke, we offer professional structural repairs and crack stitching services to repair and reinforce cracked walls, ensuring long-lasting stability.
What is Crack Stitching?
Crack stitching is a technique used to repair and stabilise cracked masonry. It involves inserting stainless steel helical bars into the mortar joints across the crack, effectively stitching the masonry back together.

Benefits of Crack Stitching
- Effective Repair: Provides a permanent solution to cracked walls, restoring structural integrity.
- Aesthetic Preservation: The repair is discreet, preserving the appearance of the building.
- Cost-Effective: A less invasive and more affordable alternative to rebuilding damaged walls.
- Durability: Helical bars are made from stainless steel, offering long-term resistance to corrosion.
Our Process
- Assessment: We begin with a thorough inspection to assess the extent of the damage.
- Preparation: The mortar joints are carefully cleaned and prepared for the insertion of helical bars.
- Installation: Helical bars are inserted into the mortar joints and bonded with a high-strength grout.
- Finishing: The repaired area is finished to match the surrounding masonry, ensuring a seamless appearance.
Why Choose Cannon Clarke?
At Cannon Clarke, we have extensive experience in crack stitching and other structural repair techniques. Our skilled team uses the latest tools and materials to ensure high-quality, durable repairs. Contact us today to learn more about our crack stitching services and how we can help restore the integrity of your building.
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

