Commercial metal roofsProkol TopSpray35.
Refurbish commercial metal roofs, treat cut-edge corrosion, seal overlaps and restore performance with a professional two-component polyurethane coating system.
Refurbish instead of replace
Treat. Seal. Recoat.
A specification-led route for suitable metal roofs with corrosion, failed laps or ageing coatings.
Open the refurbishment guideOfficial Prokol Outreach Partner
Direct Manufacturer Backing — Not Just a Supplier
Forti Nova operates as an Official Prokol Outreach Partner. These relationships go far beyond product supply. They provide our customers with direct access to Prokol's manufacturer technical departments, specification support, project guidance, contractor training, approved applicator networks and warranty assistance — attending client meetings if required.
Whether the requirement is selecting the right system, obtaining technical guidance, achieving warranty compliance or navigating a complex specification, our close working relationship with Prokol helps ensure customers receive the support needed throughout the lifecycle of a project. For many customers, this access proves just as valuable as the materials themselves.
25-Year Manufacturer Warranty
On approved systems
UV Stable & Colour Fast
Any RAL colour available
Rapid Curing Technology
Fast return to service
Specification Support
Direct manufacturer access
Is Your Metal Roof Failing?
TopSpray35 can extend the service life of suitable metal roofs when correctly specified and maintained. A refurbishment-focused solution as an alternative to full roof replacement.
✗ Common Problems
- ✗Rust and corrosion at sheet laps
- ✗Fading, chalking, or peeling coating
- ✗Leaks around fixings and flashings
- ✗Failed sealants at abutments
- ✗Budget constraints preventing replacement
✓ TopSpray35 Solution
- ✓UV stable and colour fast — available in virtually any RAL colour
- ✓25-year manufacturer warranty on approved systems
- ✓Rapid curing technology — faster programme completion
- ✓Compatible with mid-range spray equipment
- ✓Ideal for roof and cladding refurbishment projects
SprayGrade vs TopSpray35: Which System for Your Project?
SprayGrade Liquid Rubber
Large-Area Waterproofing
Best For:
- • Flat roofs (concrete, asphalt, EPDM)
- • Asbestos roof encapsulation
- • Warehouse roof refurbishment
- • Large areas (300m²+)
Key Features:
- • Approximately 600m² per day under suitable conditions
- • 2mm seamless membrane
- • Water-based, low odour
- • 15-year warranty
TopSpray35 Polyurethane
Metal Roof Refurbishment
Best For:
- • Metal roofs (corrugated, standing seam)
- • Cut-edge corrosion treatment
- • Industrial steel structures
- • Complex details & penetrations
Key Features:
- • Superior adhesion to metal
- • Chemical & UV resistance
- • Spray or roller application
- • 20+ year lifespan
Commercial Advantage
Stronger technically. More efficient operationally. More competitive commercially.
Reduced labour requirements, faster installation speeds, refurbishment alternatives to replacement and lower lifecycle costs create substantial savings throughout the delivery and operational life of a project. The result is a solution that is often stronger technically, more efficient operationally and more competitive commercially than traditional alternatives.
Where TopSpray35 Is Used
Metal Roof Refurbishment
Treat corrosion, extend lifespan
Industrial Units & Warehouses
Protect assets, minimal disruption
Commercial Buildings
Compare survey-led refurbishment and replacement scopes
Cut-Edge Corrosion Treatment
Long-term refurbishment solution
Standing Seam Roofs
Seamless waterproof coating
Steel Structures & Cladding
UV and weather protection
Real Project Photography
TopSpray35 Projects
Real project images showing TopSpray35 polyurethane coating applied to metal roofs, corrugated steel and commercial roof edge details.
How Can We Help You?
Building Owner / Facilities Manager
I need help with my metal roof
Request a free site assessment and quote for your commercial roof refurbishment project.
Request Project AssessmentSurveyor / Architect
I need specification support
Discuss your project specification with our technical team. Technical data sheets and NBS clauses available.
Discuss SpecificationRoofing Contractor
I want to apply TopSpray35
Join our Approved Applicator Programme. Access to systems, training, and project leads.
Join Approved ProgrammeThe Refurbishment Process
Site Survey
Free roof assessment. We identify corrosion, failed laps, and problem areas.
Specification
Technical team specifies the correct system, primers, and coverage rates.
Preparation
Roof is cleaned, rust-treated, and primed for maximum adhesion.
Application
TopSpray35 is spray-applied in a single pass, creating a seamless membrane.
Technical Specifications
Product Data
Downloads & Support
Need more info? Contact our technical team for project-specific specifications and material calculations.
Frequently Asked Questions
Ready to Discuss Your Metal Roof Project?
Free assessments available across the North West. Specification support for surveyors. Approved applicator training for contractors.