Overview
As an approved HD Sharman specification partner, Vanguard has access to their complete range of proven roof refurbishment systems — from full roof coatings to cut-edge corrosion treatment and rooflight restoration. HD Sharman's flagship Delcote® system has over 35 years of proven performance on UK commercial and industrial roofs. It is a cold-applied, inorganic coating that creates a seamless, weather-resistant membrane directly over the existing roof — eliminating the need for costly and disruptive full replacement. Our specification covers the full HD Sharman product range: • Delcote® 25 — Full roof coating with 25-year product guarantee (BBA certified, AA fire rated) • Delcote® 10 — Single-coat system with 10-year guarantee, upgradeable to 25 years • Seamsil® 100 — Cut-edge corrosion treatment with 15-year BBA-approved guarantee • Seamsil® 400 — Bolt encapsulation system (up to 25 years as part of Delcote®) • Delglaze® — Rooflight coating system with 10-year guarantee Every HD Sharman project we specify is surveyed, costed, and overseen to ensure the right system is matched to your roof's specific condition and requirements.
Key Benefits
Saves 50–70% vs Replacement
A Delcote® full roof coating typically costs a fraction of strip-and-replace, with no waste to landfill and minimal business disruption.
Up to 25-Year Guarantees
Delcote® 25 carries a 25-year product guarantee. Seamsil® 100 cut-edge corrosion treatment is BBA-approved for 15 years.
BBA Certified & AA Fire Rated
Delcote® systems carry independent BBA certification and AA fire ratings — the highest level of external fire performance.
UV & Weather Resistant
Inorganic coating technology provides exceptional resistance to UV, rain, snow, and temperature extremes from -100°C to +200°C.
Seamless & Flexible
Applied as a continuous membrane with no joints or seams. Maintains elasticity and movement accommodation throughout its life.
No Roof Tear-Off Required
Applied directly over the existing substrate by roller, brush, or airless spray — with primerless adhesion to most metal roofs.
Typical Applications
- Profiled metal roofs on industrial units and warehouses
- Cut-edge corrosion on metal roof sheets and flashings
- Leaking bolt fixings and roof penetrations
- Aged and weathered GRP translucent rooflights
- Distribution centres and logistics buildings
- Factory, manufacturing, and agricultural buildings
- Schools, hospitals, and public sector buildings
Common Questions About HD Sharman Roof Coating Systems
Honest answers to the questions our clients actually ask.
Is an HD Sharman coating just a temporary fix?
Absolutely not. Delcote® has over 35 years of proven, real-world performance on UK roofs. With a 25-year product guarantee backed by BBA certification, this is a genuine long-term refurbishment solution. The key is correct specification — matching the right system to your roof's condition. That's exactly what Vanguard does as an approved specification partner.
My roof has severe cut-edge corrosion — can it still be saved?
In most cases, yes. HD Sharman's Seamsil® 100 system is specifically designed for cut-edge corrosion treatment and carries a 15-year BBA-approved guarantee. We treat the corroded areas, encapsulate bolt fixings with Seamsil® 400, then apply the Delcote® full roof coating over the top. However, if sheeting has corroded through to the point of structural failure, we'll tell you honestly — and recommend the right alternative.
What's the difference between Delcote® 10 and Delcote® 25?
Delcote® 25 is a two-coat system (applied in contrasting shades for quality assurance) with a 25-year product guarantee. Delcote® 10 is a single-coat system with a 10-year guarantee — ideal for shorter tenancies or phased maintenance budgets. The clever part: Delcote® 10 can be topped up later to achieve a full 25-year guarantee, giving you a staged investment approach.
How does the cost compare to a full roof replacement?
An HD Sharman roof coating typically saves 50–70% compared to strip-and-replace. There's no structural alteration, no waste to landfill, and the work is completed much faster with minimal disruption. For a roof in reasonable structural condition, coating is nearly always the smarter financial decision.
Can my rooflights be refurbished at the same time?
Yes. HD Sharman's Delglaze® system restores aged and weathered GRP rooflights with a clear coating that carries a 10-year guarantee. It's typically done as part of the full roof refurbishment programme, saving you the cost and disruption of separate rooflight replacement.