Liquid gutter waterproofing Poole: fleece-reinforced gulley repair case study
Some gutters work harder than others. This long gulley on a commercial roof in Poole had been leaking on and off for a while, with ponding water and crumbling joints letting rain track into the building. Our solution: a full clean-back to sound concrete and a two-coat, fleece-reinforced liquid waterproofing system to create a continuous, watertight seal.
Why liquid gutter waterproofing Poole properties choose a fleece system
Coastal weather, debris build-up and ageing joints make long gullies especially vulnerable. A cold-applied liquid membrane (reinforced with fleece) solves the weak points that often remain after simple patching:
Seamless finish: No laps or joints to fail—perfect for awkward shapes and long runs.
Fleece reinforcement: Adds tensile strength across cracks and joints, coping with thermal movement.
Cold-applied safety: No flames or hot works near cladding, services or fragile sheets.
Fast cure & minimal disruption: Areas can often be returned to service quickly.
Compatible detailing: Robust terminations at outlets, upstands and thresholds.
Our liquid gutter waterproofing Poole process—step by step
1) Clean back to concrete
We removed organic growth, silt and failed coatings, then mechanically prepared the gulley for maximum adhesion. This stage exposes hidden cracks and pinholes so they can be treated properly.
2) Prime & detail
Cracks, outlets and joints were addressed first. We primed the substrate (as required by the manufacturer) and applied a base coat to critical details to eliminate capillary paths.
3) First coat of liquid resin
A uniform base coat was rolled out to establish the new waterproofing layer and lock down the surface.
4) Fleece-embedment second coat (scheduled following cure)
A reinforcing fleece will be fully embedded into the second coat, turning the gulley into a tough, flexible, continuous membrane that resists standing water and thermal movement.
5) Quality checks & sign-off
Thickness checks at key points, neat termination details, and a final inspection prior to handover/warranty paperwork.
Results you can see (and feel when it rains)
Continuous watertight layer across the entire gulley
Stronger joints and crack-bridging performance thanks to fleece reinforcement
Reduced risk of internal leaks and corrosion on adjacent sheet fixings
Cleaner, safer drainage to outlets with debris removed during prep
If your building struggles with blocked outlets or high parapets, our leadwork services help ensure abutments and chases stay watertight alongside the new membrane. For periodic upkeep after works, see Seasonal roof maintenance Dorset.
Signs your gulley or gutter needs liquid waterproofing
Persistent ponding and damp staining beneath the run
Cracked, crazed or lifting coatings; crumbling mortar at joints
Vegetation growth and silt build-up restricting outlets
Leaks appearing around thresholds, internal walls or electrics after storms
Left unresolved, minor seepage accelerates concrete spalling and corrodes fixings—turning a small repair into a larger roof issue. Early intervention is the most cost-effective route.
Book a survey in Poole & Dorset
Every gulley is different. We’ll assess your substrate, falls, outlets and exposure to specify the right liquid system and reinforcement. Whether this is a stand-alone repair or part of a wider roof upgrade, Dorset Building & Roofing will deliver a safe, neat, warrantied result.
Ready to stop the leaks?
Get in touch to arrange a site visit and a clear, fixed proposal.
