Introduction to Network Rail New Works Coatings XO99 Certified for Rail Infrastructure
At Promain, we work directly with contractors, engineers, and Network Rail approved installers to supply coatings that meet the latest Network Rail standards, including those issued in the XO99 specification. From PPG Protective coatings to fast-curing epoxies like Penguard Express MIO, we help you complete projects with confidence, efficiency, and minimal disruption.
Why Certification Matters for Network Rail Approved Coatings and Rail Infrastructure Projects
Not all industrial coatings are suitable for rail. Only Network Rail approved coatings certified under schemes like XO99 are authorised for use in new works rail infrastructure. This certification proves a product has passed stringent tests around application conditions, durability, moisture resistance, and corrosion performance, ensuring it can protect steel and concrete in challenging, high-risk areas such as stations, walkways, and operational zones.
Using certified products also means you have access to downloadable PDFs, data sheets, and system application guidance that ensures correct installation and long-term asset protection. Choosing certified systems means:
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You comply with current Network Rail infrastructure specs
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You minimise the risk of coating failure or audit issues
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You meet safety and fire performance requirements
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You avoid costly rework or shutdowns due to non-compliant systems
The Scope of Network Rail Coating Systems Across Live Rail Environments
Our coverage of Network Rail approved systems spans both new works and long-term maintenance. These coatings protect a wide variety of surfaces and infrastructure including:
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Steel bridges and footbridges
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Access walkways, staircases, gantries
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Trackside assets, plant equipment and housing
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Platform edges and safety barriers
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Signal boxes, containment areas, and tunnel access
Whether it’s applying a two-component system to a newly fabricated structure or refreshing existing coatings in a live rail environment, the right product must comply with surface prep standards, cure times, and performance levels outlined by Network Rail standards.
Many systems in our catalogue are compatible with marine coatings for coastal rail sites or exposed bridge decks. These products are designed to offer protection even in extreme conditions—salt spray, freeze/thaw cycles, UV exposure, and high mechanical stress.
For every coating system, we provide support on application method, dry film thickness (DFT), overcoating windows, and final cure timelines to help complete your project on schedule.
Understanding Rail Coating in the New Works Environment: Meeting Network Rail Standards
In new works, coating specification is built into the design stage and must match approved system requirements. This includes:
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Surface preparation to SA2.5 blast or mechanical cleaning
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Application of primers compatible with the base material
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Use of high-build intermediate coats (e.g. Penguard Express MIO)
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A final aliphatic acrylic polyurethane finish for UV and chemical resistance
These systems are often designed as a three-coat system for maximum performance. For steel structures, selecting a two component epoxy like PPG Protective & Marine coatings ensures high adhesion, strong mechanical resistance, and extended recoat intervals.
It’s also important to understand site limitations such as working temperatures, moisture levels, and safety access, which affect coating performance. Promain’s technical support team helps contractors choose products that perform even in high-risk conditions and meet Network Rail infrastructure guidelines.
Spotlight on XO99 Certified Systems in Our Network Rail Approved Offering
Our dedicated page for Network Rail New Works Coatings XO99 Certified systems features:
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PPG Nu-Klad HD – a heavy-duty epoxy system suitable for floors, walkways, and anti-slip surfaces
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Sherwin Williams Metagard L574 – widely used on footbridges, platform structures, and steel rail assets
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Penguard Express MIO – a high-build, fast-curing intermediate coat offering excellent barrier protection in rail and marine environments
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Sherwin Williams Macropoxy C425V2 – designed to protect steel in aggressive rail locations with fast overcoating times
Each product listed is backed by test data, issued approval documents, and full compliance with Network Rail new works guidance. These systems are proven in the field and used across thousands of UK rail projects.
How Promain Demonstrates Expertise in Rail Infrastructure Coating Systems
Promain is trusted by contractors and project engineers nationwide for supplying Network Rail approved coating systems. We provide:
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Application guides and specification PDFs
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Full support on primers, systems, and topcoats
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Stock held in the UK for fast dispatch
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Help with surface preparation standards, DFT requirements, and curing conditions
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Technical expertise on coating steel in exposed or enclosed rail environments
Our rail coatings are designed to handle everything from live installations to overnight shutdowns, where fast turnaround and minimal disruption are key. Whether you're working with large contractors, project managers, or local authorities, we help you meet safety, performance, and budget targets.
Case for Choosing Certified Rail Systems in New Works Projects
Choosing an XO99 Certified Network Rail approved system means you're working to the highest specification available. Benefits include:
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Systems approved and issued for Network Rail infrastructure
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Reduced disruption with faster cure and recoat times
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Compatibility with marine coatings for coastal or bridge projects
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High resistance to weathering, corrosion, fire, and abrasion
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Accurate DFT and full system lifespan projections
For critical infrastructure like stations, platforms, and access structures, using an unlisted or uncertified system can delay your project and raise liability concerns. Promain only supplies systems that follow official guidance and are backed by testing, documentation, and real-world performance.
Complementary Product Links for Your Project
Here are some direct links to our Network Rail approved coatings, all part of our XO99 certified product offering:
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Metagard L574 (formerly Leighs) – Widely used in structural steel applications
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Leighs Epidek M153 – Designed for footbridges and heavy-duty decking with anti-slip function
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Sherwin Williams Macropoxy C425V2 – Suitable for aggressive environments and rapid work completion
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PPG Nu-Klad HD – An industrial epoxy floor finish with Network Rail certification
All systems include downloadable PDFs, full application information, and product data.
Trust & Assurance: Why Promain Is Your Go-To Partner for Network Rail Approved Coatings
With over 40 years’ experience supplying coatings across the UK, Promain is trusted by engineers, contractors and consultants to support rail infrastructure works with:
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Officially approved systems meeting current Network Rail standards
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Fast supply with UK-based stock
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Access to full specification documents, safety data, and guidance PDFs
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Products suitable for high-traffic, exposed or enclosed rail environments
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Proven systems for steel protection, corrosion control, and long-term service life
We know the importance of getting every coating system right first time—particularly where safety, compliance and budgets are on the line.
Ready to Upgrade Your Specification? Contact Us Today
If you're specifying coatings for a Network Rail infrastructure project, don't compromise. Use systems that meet XO99 certification and comply with current standards. Our team will support you from first contact through to product supply.
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Request technical documentation
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Confirm system approval and issue details
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Speak to a coatings specialist for your next rail job
Let us help you protect critical assets, reduce maintenance, and keep your project on track.
FAQs
Q: What does “XO99 Certified” mean?
A: It means the coating system has been reviewed and approved for new works in Network Rail infrastructure, ensuring it complies with current performance, corrosion resistance, and application requirements.
Q: Which surfaces are suitable for Network Rail approved coatings?
A: XO99 systems are designed for steel bridges, platforms, walkways, plant rooms, containment areas and exposed trackside equipment.
Q: How is “rail coating” different for new works?
A: New works allow for complete surface preparation (e.g., SA2.5), allowing coatings to perform as designed. Maintenance often means compromised access or shorter cure windows.
Q: Is it safe to use non-approved coatings?
A: Not for rail infrastructure. Non-certified systems may fail under operational stress or weathering, and they often lack critical test data or approval for public infrastructure.
Q: What does Promain offer beyond products?
A: Technical advice, system selection support, DFT guidance, application PDFs, surface prep specs, and expert knowledge across Network Rail coatings.
Q: Is surface preparation really that important?
Yes. Approved systems rely on the right profile, cleanliness, and moisture levels. Failure to prep properly can void performance and warranty.