Cut Edge Corrosion Treatment Hitchin

Cut edge corrosion typically begins at sheet cut edges, side/end laps and around fixings where factory coating stops. UV and weathering lift the finish, exposing steel and allowing moisture to track into laps. If ignored, it progresses to leaks, staining and premature sheet replacement.
Early Indicators to Watch
- Lifting or feathered coatings at lap edges
- Rust staining beneath laps or down elevations
- Pinholes and hairline gaps along side laps
- Occasional water ingress during wind-driven rain
How We Treat Cut Edge Corrosion

- Survey & Adhesion Check: Identify delamination, rust spots and moisture routes; test substrate soundness.
- Mechanical Prep & Arrest: Remove failed Plastisol/paint; treat corrosion and degrease to a sound edge.
- Prime: Apply compatible metal primer to stabilise edges and prepared areas.
- Seal Laps & Fixings: Tool sealant into side/end laps, penetrations and bolt heads to specified depth/width.
- Protective Topcoats: Install high-performance coatings with returns beyond the lap (typically ≥50 mm) and complete QA/clean-down.
Where steel loss is advanced, selective sheet replacement may be recommended after survey.
Why Riolett Services for CEC?
- Experienced crews with RAMS & COSHH as standard
- Night/weekend programmes to keep operations running
- Neat detailing at laps, fixings and trims
- Manufacturer-aligned specifications with written guarantees
Cut Edge Corrosion — FAQs
Recent Work Near Hitchin
- Industrial Unit B — cut edges; gutters; penetrations; 2 days + cure. Result: strong adhesion; watertight joints.
- Retail Park Zone C — delamination removal; prime; night works. Result: stable base; neat lap return.
- Cold Chain Facility — hygiene topcoat; lap sealing; weekend. Result: bright, uniform appearance.
- Business Park Entrance Roof — eaves & trims; fixings; evening shift. Result: crisp detailing; durable protection.
- Wholesale Roof Treatment — end laps; rust spot treatment; weekend. Result: arrested corrosion; clean edge build.
Map — Projects Around Hitchin
See where we’ve been working in Hitchin.
Out-of-hours programmes available across Hitchin.
What Clients Say
Worked nights so we didn’t lose trading hours. Finish looks great.
Good prep and tidy masking. The result is smart and consistent.
Professional team, on time, zero fuss. Would use again.
Clear before/after photos and a watertight outcome.
Good value, quality seal widths, and a neat topcoat.
Thorough inspection and a clear plan. Laps now sealed and staining stopped.
Contact & Coverage
Riolett Services
Tel: 07538 489392
Service area: Hitchin and surrounding locations.
Related services: Cladding Repairs • Cladding Spraying