Commercial Roof Refurbishment Systems in the UK
Spray-applied waterproofing, liquid rubber coatings and specialist refurbishment systems for industrial and commercial buildings.
What Is Commercial Roof Refurbishment?
Commercial roof refurbishment involves restoring existing roof structures using modern waterproofing systems instead of full replacement. Systems such as SprayGrade, Liquid Rubber HBS200 and Prokol coatings allow roofs to be sealed, protected and extended in lifespan with minimal disruption. This approach is widely used across warehouses, factories and commercial buildings where downtime must be avoided.
Direct Answers to Common Questions
What is commercial roof refurbishment?
Commercial roof refurbishment is the process of restoring an existing roof using liquid waterproofing or coating systems rather than removing and replacing it. The roof structure remains in place while a new protective membrane is applied.
Is roof refurbishment better than replacement?
Where the existing structure and retained build-up are suitable, refurbishment may reduce strip-out and support phased work. The quotation must compare the same preparation, access, wet material, operational and handover scope as replacement.
What is the fastest way to waterproof a large commercial roof?
Spray-applied systems such as SprayGrade allow large areas to be covered quickly with a seamless membrane, achieving approximately 600m² per day under suitable conditions and minimising operational disruption.
The Challenge: Ageing Commercial Roofs
Ageing commercial roofs often begin to experience leaks, failed waterproofing and water ingress.
Persistent water damage affects building operations, damages assets and creates liability.
Full roof replacement is expensive and disruptive, requiring extended shutdowns that impact business continuity.
Refurbishment extends life without full strip-out. Where the roof structure remains viable, modern refurbishment systems provide a practical alternative.
Refurbishment vs Roof Replacement
Refurbishment
- Comparable scope required against replacement
- Faster installation in days, not weeks
- Minimal disruption to operations
- No full strip-out required
Replacement
- High cost for materials and labour
- Extended timeline (weeks/months)
- Significant downtime to operations
- Full strip-out and waste disposal
For many commercial buildings, refurbishment is the preferred approach where the roof structure remains viable.
Need a Full Decision Framework?
Our comprehensive authority page covers substrate condition assessment, roof type-specific guidance, replacement triggers, roof survey requirements, and professional support pathways for all commercial roof types.
SprayGrade – High Output Waterproofing for Large Roof Areas
Forti Nova supplies Liquid Rubber SprayGrade, a spray-applied waterproofing system for commercial roofing refurbishment projects.
SprayGrade can achieve application rates of approximately 600m² per day under suitable conditions under suitable conditions, allowing large roofs to be waterproofed rapidly with minimal operational disruption.
It creates a seamless membrane across the roof, eliminating joints and reducing long-term failure points. Used across warehouses, factories, distribution centres and industrial buildings.
Detailing, Repairs & Complex Areas with HBS200
Liquid Rubber HBS200 is used alongside spray systems to complete detailing and preparation work on complex roof areas. Liquid rubber systems such as HBS200 are commonly used across all five locations where we operate.
Typical uses include:
This ensures a fully sealed system before and after spray application, preventing future leaks at vulnerable points.
View HBS200 SystemLiquid waterproofing systems and roof repair systems available in your area:
Metal Roof & Cladding Refurbishment Systems
Forti Nova is the Northern distributor for Prokol specialist systems, providing metal roof coatings and cladding protection solutions for commercial refurbishment.
TopSpray35
- Metal roof coatings
- Cladding protection
- Corrosion resistance
Prokol Monoseal
- Specialist waterproofing
- High-performance protection
- Metal surface compatibility
System Supply, Specification & Approved Contractors
Forti Nova is the UK importer and distributor of Liquid Rubber SprayGrade. Systems are supplied with full technical specification support and applied through approved contractors trained in application and equipment use.
We provide complete project support from initial assessment through to specification, contractor allocation, training and on-site supervision.
How Commercial Roof Refurbishment Works
Roof Inspection & Assessment
Condition assessment and suitability evaluation
Cleaning & Preparation
Surface cleaning and removal of loose material
Detail Work
HBS200 applied to joints, penetrations and complex areas
Main System Application
SprayGrade (or metal coating) applied across roof surface
Final Inspection & Certification
Quality verification and project sign-off
Typical Commercial Roof Refurbishment Costs
Project costs depend on several factors:
- •Roof size (m²) — larger areas benefit from spray systems' high coverage rates
- •Condition of existing roof — level of preparation required
- •System selected — SprayGrade, HBS200, or Prokol systems
- •Access requirements — site logistics and equipment positioning
Compare refurbishment and replacement using the same survey findings, preparation, access, programme, warranty and whole-life maintenance assumptions.
Typical Projects & Applications
Warehouses and distribution centres
Factories and manufacturing facilities
Logistics buildings
Agricultural buildings
Commercial units and business parks
Metal roof structures
Projects supported across Blackburn, Preston, Manchester, Bolton, Wigan and the wider North West.
Frequently Asked Questions
What is the best system for commercial roof refurbishment?
Spray-applied systems such as SprayGrade are widely used due to speed and seamless coverage. They can achieve approximately 600m² per day under suitable conditions and eliminate seams. Metal roofs often use systems such as TopSpray35 for corrosion protection.
Is roof refurbishment better than full replacement?
Refurbishment may be considered where survey evidence shows the retained roof and structure are suitable. Compare it with replacement on the same scope, including wet material removal, access, phasing, warranty terms, maintenance and operational constraints.
Can metal roofs be refurbished instead of replaced?
Yes, coating systems such as TopSpray35 can extend lifespan and prevent corrosion on metal roof structures, avoiding expensive replacement.
How long does roof refurbishment last?
Duration depends on the system used and roof condition, but spray-applied systems are designed for long-term protection and typically last 20+ years with proper maintenance.
Is spray-applied roofing better than sheet systems?
Spray systems eliminate seams and provide seamless coverage, making them particularly suited to large irregular roof areas. They also reduce labour time and installation disruption.
What is the fastest way to refurbish a large roof?
Spray-applied systems such as SprayGrade allow rapid coverage across large surfaces, achieving approximately 600m² per day under suitable conditions and minimising building downtime.
What systems does Forti Nova supply for commercial roof refurbishment?
Forti Nova is the UK importer and distributor of Liquid Rubber SprayGrade for large-scale refurbishment, plus HBS200 for detailing, and Prokol systems (TopSpray35, Monoseal) for metal and specialist applications.
SprayGrade by Location
Local supply, installation and specification support for SprayGrade across the North West.
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Discuss Your Commercial Roofing Project
Call 01254 433987 or send your project details for specification, system advice and pricing support. Forti Nova provides system supply, approved contractor access and complete project support across the North West.
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