Roofing Services

Flat, Pitched and Heritage Roofing & Waterproofing

Manufacturer-approved roofing systems for commercial, education, heritage and residential buildings across London and the South East, from survey and specification to installation and warranty.

Our Roofing Services

Flat Roofing & Waterproofing

RMG installs flat roofing and waterproofing systems from Sika, Bauder, Polyroof and IKO as a manufacturer-approved contractor. Where a manufacturer-backed warranty is required, the specification is agreed with the manufacturer, with inspections during the works and sign-off at completion.

  • Single-ply membranes, fully adhered and mechanically fixed

  • Liquid-applied and cold-applied waterproofing

  • Hot melt, built-up felt and flame-free systems

  • Warm roof and insulated build-ups, overlays and full refurbishment

  • Green roofs, blue roofs, podium decks, balconies and terraces

Typical projects range from schools, hotels, warehouses and offices to apartment blocks, extensions and award-recognised heritage work such as the Lady McAlpine Library.

Completed single-ply flat roof on a commercial building, aerial view
Completed commercial flat roof at Highbury Grove Academy, aerial view
Flat roof with an integrated solar PV array
New slate roof with integrated solar PV on a detached house, aerial view

Pitched Roofing

Natural slate, clay and concrete tile roofing for full re-roofs, refurbishment and new-build projects. Pitched roofing at RMG is led by Managing Director Daryl Cooke, an NVQ-qualified specialist with over 25 years on pitched roofs, and every roof is detailed for ventilation, weathering and long-term performance rather than appearance alone.

  • Full strip and re-roof with new underlay, battens, insulation and ventilation

  • Natural slate, clay plain tiles, interlocking concrete and clay tiles

  • New-build pitched roofing for developers and main contractors

  • Dormers, valleys, abutments and leadwork detailing

  • Storm damage and defect rectification, including work left unfinished by others

Natural slate roof detail
Clay tile roof detail

Heritage Roofing & Leadwork

Listed and period buildings need roofing that respects the original construction. RMG re-slates and re-tiles heritage roofs using appropriate materials and details, and carries out traditional leadwork, from flashings, gutters and dormers to full lead roofs, using qualified lead welders.

  • Natural slate and handmade clay tile re-roofing

  • Lead flashings, gutters, dormers and bay roofs

  • Sympathetic repair rather than wholesale replacement where the fabric allows

  • Liquid waterproofing systems for heritage flat roofs, as at the Lady McAlpine Library

Heritage red-brick building with re-roofed pitched roofs and formal gardens, aerial view
Traditional leadwork detail
Roofer checking the lead flashing at the base of a brick chimney stack
Roof survey view across a metal profile roof with rooflights

Roof Surveys & Condition Reports

As a member of the NFRC Competent Person Scheme, RMG produces accredited roof reports that are recognised by insurers and carry weight in property transactions, insurance claims and planned maintenance budgeting. Surveys combine access-based inspection with drone imaging and, where needed, thermal imaging and moisture readings.

  • Condition surveys and photographic reports for estates and facilities teams

  • Pre-acquisition and pre-sale roof inspections

  • Defect diagnosis, leak tracing and remedial specifications

  • Planned maintenance programmes with prioritised, costed recommendations

Arrange a roof survey

Associated Roofline Works

Fascias, Soffits & Guttering

Replacement and capping of damaged or rotten fascias and soffits, and new rainwater goods sized and detailed to suit the roof, carried out alongside re-roofing or as a stand-alone package.

Chimneys

Raking out and repointing, flaunching, lead tray and flashing renewal and partial rebuilds, keeping chimneys weathertight and structurally sound as part of wider roof works.

Discuss Your Roofing Project

Tell us about the building, the problem and the programme and we will advise on the right system, survey the roof where needed and provide a clear, itemised proposal.