Our process has been designed to give you confidence at every stage: transparent, evidence-backed, and proven across homes, heritage sites, commercial buildings, and public projects in London and the Home Counties.
From the first phone call to final handover, our approach removes the uncertainty that too often surrounds roofing. With decades of combined experience, accredited craftsmen, and a commitment to Building Regulations and heritage standards, we deliver not just roofs — but peace of mind.
The journey begins with a conversation. Whether you call us about a sudden leak, a planned re-roof, or a heritage restoration, we arrange a free, no-obligation site survey. Unlike firms that send sales reps, our surveys are carried out by senior roofers with NVQs and decades of trade experience.
During the visit, we carry out a comprehensive inspection. For a flat roof, that might mean checking for signs of ponding, blistering, or seam failure. For a heritage slate roof, we’ll look for slipped tiles, failed fixings, or inadequate ventilation. For leadwork, we check for fatigue cracks, failed joints, or poor detailing.
You’ll receive immediate feedback on the spot. This ensures you know what’s happening above your head and what options are realistic. No pressure, no jargon — just clear insights grounded in experience.
Once the inspection is complete, we prepare a clear, itemised quotation. Every element is broken down — materials, labour, scaffolding, safety measures — so you know exactly where your investment is going. Alongside the numbers, we provide a written explanation of the methods and materials proposed.
Where options exist, we set them out clearly:
No hidden extras, no vague wording. Each quote is designed to be decision-ready: you see the trade-offs, the warranties attached, and the compliance requirements. This transparency means you remain in control.
Micro-CTA: Review your tailored quote and select the option that fits your needs and budget best.
Before any work begins, we ensure your property and surroundings are protected. Scaffolding and access equipment are installed safely and in compliance with CITB training protocols. Gardens, driveways, and sensitive areas are sheeted or cordoned to prevent damage.
We also liaise with neighbours where necessary, especially in terraced or heritage areas, to minimise disruption. Risk assessments and method statements are prepared and shared. For sensitive sites such as hospitals, schools, or prisons, our team can provide DBS, NPPV, or enhanced vetting certification.
This stage is about building trust before a single tile is lifted. Clients see that safety and respect for the property are non-negotiable.
With preparation complete, the real craft begins. Here, decades of experience meet accredited standards.
Throughout installation, our supervisors conduct daily quality checks, ensuring workmanship and compliance. Work sites are kept clean and disruption kept minimal. Clients receive regular updates, photos, and reassurance that progress matches expectations.
Our roofers work as if it’s their own home or business overhead.*
No project is complete without evidence. At JG Leadworks, we follow a five-point QA protocol:
At handover, clients receive a compliance pack. This includes photographs, warranties, method statements, and insurance-ready documents. Where applicable, references to UK standards like BS 5534 (slating/tiling) or Part L (energy efficiency) are noted.
The result? A roof not only built to last but one backed by evidence — giving peace of mind to homeowners, landlords, and facility managers alike.
We don’t just disappear after completion. A final walkthrough is conducted with the client, pointing out work completed, highlighting before/after evidence, and explaining warranties. For heritage sites, we also provide documentation for conservation officers if required.
Clients are given aftercare guidance, covering:
We also offer ongoing maintenance contracts for landlords, commercial facilities, and heritage custodians. This ensures roofs are inspected, cleaned, and minor issues fixed before they become major problems.
The reassurance? You don’t just get a roof — you get a partner for its lifetime.
Sometimes it helps to see the journey in a single glance.
6 Steps, Simplified:
Each step is evidence-backed, regulation-compliant, and designed to keep you informed.



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,...
If you’re looking for roofing specialists you can trust — from emergency repairs to heritage-grade restoration — JG Leadworks & Roofing are here to guide you through the process. Book your free survey today and see how our transparent, evidence-led approach protects your property and peace of mind.