Commercial Flat Roof Installation
New-build and replacement flat roof systems for offices, retail units, warehouses and mixed-use developments across London. IKO 2-ply torch-on as standard, with alternatives available.
IKO Certified · 20+ Years Experience · Free Estimates
Commercial Roofing
Commercial Roofing
London
Trusted flat roof installation, repairs and waterproofing for London businesses. Up to 20-year guarantee. IKO-certified contractors serving all London boroughs and Surrey.
About Our Service
London’s Commercial Flat Roofing Specialists
Supreme Home Improvements is a leading commercial roofing contractor in London, delivering IKO-certified 2-ply torch-on roofing systems, flat roof installations, and professional waterproofing to businesses across every borough. With over two decades of hands-on experience, our team handles everything from small commercial roof repairs to full-scale new installations — all completed to the highest industry standards.
Whether you manage offices, retail units, warehouses, schools, or apartment blocks, a well-maintained flat roof is critical to protecting your investment. Our commercial flat roofing London service provides durable, weatherproof solutions backed by up to a 20-year guarantee — giving you confidence that the job is done right first time.
Why Commercial Flat Roofs Require a Specialist
Commercial flat roofs differ significantly from domestic roofs. They span larger surface areas, carry HVAC units and drainage systems, and face greater stress from foot traffic and environmental exposure. Poor installation or repairs on a commercial flat roof can lead to widespread water ingress, structural damage, and costly business disruption. That’s why you need a certified commercial roofer — not a generalist.
As IKO certified 2-ply torch-on roofers, Supreme Home Improvements meets the precise technical standards required for commercial-grade roofing. We assess every roof individually, recommend the most suitable system for your building, and complete all work to manufacturer specification so your guarantee remains fully valid.
What We Do
Commercial Roofing Services in London
We offer the full range of commercial roofing solutions for London businesses, tailored to your building type, budget and timescale.
Commercial Roof Repairs London
Fast-response repairs for commercial flat roofs including leaks, blistering, ponding water, and membrane failures. We diagnose and resolve roof problems before they escalate.
Torch-On Roofing Systems
IKO-certified torch-on felt roofing — the industry-leading choice for commercial flat roofs in London. Exceptional durability and weather resistance, fully bonded to the roof deck.
Commercial Roof Waterproofing
Specialist waterproofing membranes and coatings to protect commercial buildings from water ingress. Ideal for flat roofs with ponding water, failing seams, or ageing felt.
Flat Roof Maintenance Contracts
Scheduled maintenance programmes for London businesses — annual inspections, gutter clearing and minor repairs to prevent costly emergency call-outs.
Commercial Roof Surveys
Detailed condition surveys with written reports and photographic evidence. Essential for building purchase, insurance claims, or planning a phased refurbishment programme.
Our Credentials
Why London Businesses Choose Supreme
We combine two decades of commercial roofing expertise with certified workmanship and an unmatched commitment to customer satisfaction.
IKO Certified
We are fully IKO-certified 2-ply torch-on roofers — one of the most trusted commercial roofing certifications in the UK industry.
20+ Years Experience
Over two decades completing commercial roofing projects across London. We’ve seen and solved every flat roof challenge imaginable.
Up to 20-Year Guarantee
We stand behind our work with guarantees of up to 20 years on most commercial roofing installations — full written warranty provided.
5-Star Rated
Consistently 5-star rated on Google by London businesses and homeowners who praise our professionalism, quality and reliability.
Competitive Pricing
Honest, transparent pricing with no hidden costs. We work within your budget and provide detailed written quotes before any work begins.
Fully Insured
Fully insured for all commercial roofing work across London. Your property and our team are protected on every project.
How It Works
Our Commercial Roofing Process
01
Free Roof Survey
We visit your London premises to assess the roof condition, measurements, access requirements and drainage. No obligation, no charge.
02
Detailed Written Quote
You receive a clear, itemised quote specifying materials, timescale, and guarantee terms — before any work begins.
03
Scheduled Installation
We plan works around your business operations to minimise disruption. Our team arrives on time and works to a clear schedule.
04
Handover & Guarantee
On completion we carry out a final inspection together. You receive your written guarantee and photographic documentation.
Coverage
Commercial Roofing Across All London Boroughs
We are based in London and cover every borough. If your commercial property is in London or the surrounding counties, we can help.
What Clients Say
Trusted by London Businesses & Homeowners
5.0 stars across 11 Google reviews. Here’s what our clients in London say about our roofing work.
★★★★★
“Kola and team offered an unrivalled and efficient service… I cannot recommend this company enough.”
★★★★★
“Kola always completes his projects to the highest standard and no detail goes unmissed.” — Highgate, North London
★★★★★
“The work has been completed to a high standard and we are delighted. Exceptional value.”
FAQ
Commercial Roofing London — Frequently Asked Questions
How much does commercial roofing cost in London?
Commercial roofing costs in London depend on roof size, accessibility, material choice and the extent of any repairs needed. We offer free, no-obligation surveys and written quotes so you know exactly what to budget. Contact us on 07572 455 326 for a personalised estimate.
What types of flat roofing systems do you install for commercial buildings?
We install IKO 2-ply torch-on felt roofing (the industry standard for most commercial flat roofs), EPDM rubber roofing, GRP fibreglass roofing, and modified bitumen systems. We will recommend the most appropriate system for your building following a free survey.
Are you IKO certified commercial roofers?
Yes. Supreme Home Improvements are fully IKO certified 2-ply torch-on roofers. This certification demonstrates that we meet rigorous installation standards set by one of the UK’s leading roofing manufacturers, and it enables us to offer extended manufacturer-backed guarantees.
What guarantee do you offer on commercial roofing in London?
We provide up to a 20-year guarantee on most commercial roofing installations. Full written guarantee documentation is provided upon project completion.
How quickly can you respond to a commercial roof leak in London?
We understand that a roof leak can halt business operations. We prioritise urgent commercial roof repairs and aim to respond to emergency enquiries as quickly as possible. Call 07572 455 326 to discuss emergency roofing cover.
Do you carry out commercial roofing surveys in London?
Yes. We provide detailed commercial roof surveys with full written reports and photographic evidence. These are useful for property acquisition, insurance, or planned refurbishment programmes.
Which areas of London do you cover for commercial roofing?
We cover all London boroughs — North, South, East, West and Central London — as well as Surrey and surrounding areas. If you are unsure whether we cover your location, call us on 07572 455 326.
Choosing the Right Commercial Roofing Contractor in London
Not all roofing contractors are equipped to handle commercial projects. When choosing a commercial roofing company in London, look for IKO or BBA certification, verifiable experience with flat commercial roofs, comprehensive public liability insurance, and a track record of delivering on time and within budget.
Supreme Home Improvements ticks every box. We are IKO-certified, fully insured, and have completed commercial flat roofing projects across London for both private businesses and public-sector clients. Every project comes with a detailed written quote, regular progress updates, and a guarantee you can rely on.
The Benefits of IKO Torch-On Roofing for Commercial Properties
IKO 2-ply torch-on roofing is widely regarded as the premium standard for commercial flat roofs in the UK. Key benefits include:
- Superior waterproofing — two fully bonded layers eliminate weak points and lap joints
- Long service life — typically 20–25 years with correct installation and routine maintenance
- Excellent resistance to UV, thermal movement and foot traffic
- Compatible with most flat and low-pitched commercial roof decks
- Manufacturer-backed guarantee available when installed by IKO-certified contractors
Commercial Roofing Maintenance in London
Even the highest-quality commercial roof will deteriorate faster without routine maintenance. Annual inspections can identify minor issues — small blisters, blocked drainage outlets, minor membrane cracking — before they develop into costly failures. Supreme Home Improvements offers ongoing maintenance contracts for London businesses, keeping your roof in peak condition year-round and extending its working life significantly.
Get a Free Commercial Roofing Quote in London
Speak directly with our expert team. No call centres, no middlemen — just honest advice and competitive pricing.