Industrial Metal Roof Repair
That Roof Has Been Leaking for 3 Years. Your Facilities Team Has Run Out of Buckets. We Can Fix It for Half the Price of Replacement.
Cut-edge corrosion. Leaking bolt fixings. Pitted sheeting. We've been refurbishing industrial metal roofs for decades — with HD Sharman systems that come with real, BBA-backed guarantees.
Most Metal Roofs Start Failing After 15–20 Years
Profiled metal roofs — the standard covering on warehouses, factories, and distribution centres across the UK — have a finite life. Cut-edge corrosion eats into the sheet laps. Bolt fixings work loose and leak. Rooflights become brittle and crack.
The traditional answer is a full strip-and-replace re-roof — costing hundreds of thousands and shutting down your operation for weeks. But in most cases, the roof structure is still perfectly sound. You don't need a new roof. You need the right coating system.
What We See on Survey
- Cut-edge corrosion advancing along sheet laps
- Leaking bolt fixings — rusty staining visible inside
- Brittle, crazed GRP rooflights letting in water
- Failed sealant and mastic at flashings and verges
- Internal water damage to stock, equipment, and finishes
- Previous patch repairs that haven’t lasted
The HD Sharman Solution
Approved specification partner — Delcote®, Seamsil®, and Delglaze® systems.
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.
No Tear-Off Required
Applied directly over existing profiled metal by roller, brush, or airless spray — with primerless adhesion to most substrates.
Seamless & Weatherproof
Creates a continuous membrane from ridge to eaves. No joints, no seams, no weak points. Resistant from -100°C to +200°C.
Works Around Your Business
No hot works, no building closure required. We work while your factory or warehouse continues to operate below.
Buildings We Refurbish
Commonly Asked Questions
Is a roof coating just a temporary fix?
No. HD Sharman Delcote® has over 35 years of proven, real-world performance on UK industrial roofs. With a 25-year product guarantee backed by BBA certification, this is a genuine long-term refurbishment solution — not a stop-gap. We’ve seen installations from the 1990s still performing perfectly.
My roof has severe cut-edge corrosion — can it still be saved?
In most cases, yes. HD Sharman’s Seamsil® 100 is specifically designed for cut-edge corrosion and carries a 15-year BBA-approved guarantee. We treat the corroded edges, encapsulate bolt fixings with Seamsil® 400, then apply the Delcote® coating over the top. If sheeting has corroded through to structural failure, we’ll tell you honestly.
How does the cost compare to a full re-roof?
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 fixed at the same time?
Yes. HD Sharman’s Delglaze® system restores aged GRP rooflights with a clear coating carrying a 10-year guarantee. It’s typically done as part of the full roof refurbishment, saving you the cost of separate rooflight replacement.
What’s the difference between Delcote® 10 and Delcote® 25?
Delcote® 25 is a two-coat system with a 25-year guarantee. Delcote® 10 is single-coat with a 10-year guarantee — ideal for shorter tenancies or phased budgets. The clever part: Delcote® 10 can be topped up later to achieve a full 25-year guarantee, giving you a staged investment approach.