We combine over a century of combined roofing expertise with heritage craftsmanship, modern compliance, and specialist security clearances that very few contractors can match. From Victorian slate to advanced liquid systems, every project we deliver is underpinned by skill, safety, and transparency.
Roofing isn’t just about putting materials on a structure — it’s about safeguarding lives, protecting assets, and preserving history. Our team brings together more than 100 years of combined experience, covering projects across:
We’ve seen it all — from stabilising roofs on emergency public sector sites to restoring centuries-old leadwork. That adaptability means we understand how to balance urgency, compliance, and craftsmanship no matter the property type.
Your roof is only as strong as the standards behind it. That’s why we don’t just rely on experience — we back it up with formal recognition:
We never compromise with generic imports. Instead, we work exclusively with suppliers whose products guarantee durability, compliance, and long-term performance:
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Heritage roofing demands a balance between authenticity and modern performance. At JG Leadworks, we deliver both:
Our heritage work preserves character while introducing discreet improvements — like modern weatherproofing or insulation upgrades — to ensure the roof performs for decades without altering its historical value.
Unlike most roofing contractors, our team holds DBS clearance, HMP Enhanced Vetting (Level 1), and Non-Police Personnel Vetting (NPPV). That means we’re authorised to work on prisons, police stations, hospitals, and other secure environments. This isn’t just paperwork — it’s proof that our workforce is trusted in the most sensitive spaces, where precision, safety, and discretion are non-negotiable.
Every project follows our Five-Point QA Protocol:
This process guarantees transparency and gives clients a tangible record of compliance and workmanship.
| Typical Roofer | JG Leadworks & Roofing |
|---|---|
| Uses generic, low-cost materials | Works only with approved suppliers (Kemper, Welsh Slate, ALM) |
| Provides a simple receipt | Supplies insurance-ready warranty documentation and compliance packs |
| Relies on general trade cards | CITB training + heritage NVQs + security clearance |
| Visual-only quoting | Drone surveys + photographic compliance evidence |
| Reactive service | 24/7 emergency response team |
We’ve built our reputation on long-standing trust across diverse client groups:
Fast leak repairs, energy-efficient re-roofs, and kerb appeal upgrades for every home.
Scalable project management and transparent communication for long-term property investments.
Safety-first roofing with minimal disruption to education and patient care.
Authentic restoration meeting conservation rules and listed building standards.
Secure, compliant delivery for prisons, police stations, and civic properties.
A roof shouldn’t be a mystery. That’s why our process is transparent and predictable:
We explain issues in plain English.
Itemised, transparent costs with no hidden extras.
Scaffolding and access installed with full compliance.
Carried out by skilled roofers using accredited systems.
Verified at every stage with photo evidence.
Warranties explained, aftercare guidance provided.
Accurate diagnostics and transparent reporting.
Heritage-grade detailing with compliance assurance.
Rapid deployment for leaks and storm damage.
Warranty assurance and regulatory proof with photos.
Clear breakdowns with no hidden extras.
Choosing JG Leadworks means choosing a contractor who delivers measurable quality every time.
Complete reroofing. Living in Singapore at the time and T was super responsive and communicative.
Replacement of lead box gutter and new flashing to parapet wall. I had an excellent experience using James and the team. He was very prompt in all aspects of communication and completed a first class job. Really pleased.
James completed some repairs on our roof and replaced some of our pebble dash by the roof as well. He was very thorough and fixed everything. He kept us really informed by taking photos and showing us what he did and keeping us updated. It also went onto our neighbours roof and he did the same fo...
We had a leak in our bedroom and James fixed the roof for us to stop it from leaking. All the work came with a warranty. The work that was carried out was good. James and his team were polite, and did all the work quickly and without too much interruption to our day-to-day lives. Would recommend ...
J G Leadworks have repaired and replaced the roofs and gulleys over our warehouse and workshops which have meant both areas are now watertight
James and team were incredibly responsive to my request to look at a serious leak issue on my flat roof. They did a very thorough investigation and explained in detail the issue and gave a fair quote. They were quick to book in and complete the work and have checked in afterwards a few times to m...
James was quick to respond to the initial contact and was able to work around some time constraints I had. He explained what needed doing clearly and was happy to answer follow up questions. He took pictures to show each stage and I feel confident in the work that was done by James and the team. ...
JG Roofing were very easy to work with. Their quote was sensible and they stuck to that figure. They completed many repairs to my roof including, rebuilding a leaded gutter, reinforcing rotten rafters, rebuilding a long felted gutter and felting parapet walls, resurfacing and felting a flat roof,...
From urgent leak repairs to conservation-grade heritage projects, JG Leadworks & Roofing are here to safeguard your property.
0808 304 2378