Flat Roof Insulation System

The flat roof insulation system complies with the most stringent of standards – from baseline building regulations through to Passivhaus.

The system is suitable for most external finishing options including sedum, metal, timber or similar decking. All components for the system are available from Unity Lime.

flat roof insulation system

CROSS SECTION OF SYSTEM

flat roof insulation system - Ventilated
  1. Finish covering (such as green roof or gravel)
  2. EPDM & WBP Plywood Deck
  3. 100mm ventilation zone
  1. Breather Membrane (Flat Roof)
  2. ISOLAIR
  3. Rafters (Filled)
    • PAVAFLEX
    • PAVATEXTIL-P
  1. OSB/DB 3.5 Airtightness Membrane
  2. Service void (25mm)
  3. 10. 11. Plastering System

COMPONENTS AND ACCESSORIES FOR ROOF FLAT

SYSTEM PERFORMANCE

u-values
0.26 – 0.10

y-values
0.05 – 0.02

Airtightness
5 – 0.6 @50pa