About G McMahon Building & Roofing Services

G McMahon Building & Roofing Services | Wirral Roofer | Gary & Van

Over 30 Years of Experience in the North West of England

G McMahon Building & Roofing Services has over three decades of experience in the Wirral area as a roof and building contractor. The wealth of knowledge gained during this time allows us to provide complete building and roofing solutions for both commercial and residential properties.

We pride ourselves on being able to offer comprehensive roofing services from flat roofs to pitched roofs identifying and working with the best materials for our customers. From handcrafting lead flashings, to sourcing and cutting slate or tiles to match your roof, fitting dry ridge system or even an entire new rubber roof system. G McMahon Building & Roofing Services can provide the best service for you.

We provide a professional service, quality workmanship, customer care and value for money that everybody. Our trusted workforce has the flexibility and experience to undertake a diverse range of projects from minor repairs and maintenance to major refurbishments and renovations.

Customer Satisfaction Guarantee

At G McMahon Building & Roofing Services we want all of our customers to be completely happy with all of the services that we provide. This is both during and after the completion of any works. Too many contractors fail to provide this essential service and can leave customers feeling disappointed and out of pocket if they are dissatisfied with the quality of the service. Read our testimonials and previous works to see the professional standards that we pride ourselves on.

Some Available Services


  • General Repairs
  • Maintenance
  • Flat Roofs
  • Pitched Roofs
  • Rubber Roofs
  • Tiled Roofs
  • Slate Roofs
  • Chimney Stacks
  • Guttering
  • uPVC Fascia Boards
  • Dry Verge Installation
  • Dry Valley Installation
  • Dry Ridge Installation
  • Storm Damage Repairs

General Building

  • Joinery
  • Extensions
  • Loft Conversions
  • Exterior Renovations
  • Plumbing
  • Bathrooms
  • Kitchens
  • Bricklaying
  • Damp Proofing
  • PVC Windows & Doors
  • Insulating
  • Driveways
  • Patios
  • Flooring
  • Fencing
  • Plastering
  • Tiling
  • Pointing