Roofers · London020 7164 0431
Alufix Roofing Ltd logo featuring a house roof with a window and blue accents on black background
Aerial view of new-build homes under construction in the UK

Flat roofs built to last

Felt flat roofs fail a little at a time. We strip back, inspect the deck and rebuild the roof as a sealed, insulated system that lasts.

EPDM, GRP and warm-deck flat roofs

Most failed flat roofs we see on London homes are old felt or torch-on systems that have been patched over the years. The problem is rarely just the surface — it's often the deck, the insulation or the drainage underneath.

We strip the roof back to the deck, replace any rotten boarding, upgrade insulation where required and install a seamless waterproofing system with the correct falls, outlets and drip edges.

EPDM rubber is our most common choice for extensions and garages: flexible, UV-stable and seamless. GRP fibreglass is ideal for balconies and walk-on areas. We'll recommend the right system for your roof, not the easiest one to install.

What's included

  • EPDM rubber membrane systems
  • GRP fibreglass roofs
  • Warm-deck insulation and ventilation upgrades
  • New decking and boarding where needed
  • Correct falls, outlets and drainage
  • Parapet and edge detailing
Roof being covered with a waterproofing layerDrone view of rooftops and gardens in a British town

London-wide

We carry out this work across every borough of Greater London.

See areas we cover

Signs you might need this

Bubbling or blistering surface

Felt that has lifted from the deck usually means moisture has got in underneath and the roof is near the end of its life.

Standing water

Puddles that don't clear after rain point to poor falls or blocked outlets, which will eventually find a way through.

Patches that keep returning

When you've had the same flat roof repaired repeatedly, a replacement is usually cheaper than the next patch.

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