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Roofing

Flat Roof

A roof with a very shallow pitch - typically 1–5 degrees - used widely on single-storey extensions. Modern flat roofs use high-performance waterproofing membranes such as EPDM rubber, GRP fibreglass, or hot-melt bitumen. A properly designed flat roof includes a fall to a drainage outlet and adequate insulation above or below the deck to meet current building regulations U-value requirements.

Related terms

EPDM Rubber RoofGRP Fibreglass RoofWarm Roof
FlashingFlat Roof Insulation

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More in Roofing

  • Cold Roof
  • Dormer Window
  • EPDM Rubber Roof
  • Flashing
  • Flat Roof Insulation
  • Green Roof
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