Kingspan Insulation - Kingspan Insulation Knowledge Base

Flat Roof Drainage

Kingspan Group Kingspan Insulation

Flat Roof Drainage


A cost comparison of different methods to create a fall in a flat roof

This White Paper examines the cost analysis of the alternatives to tapered roofing systems to provide a fall in a warm flat roof. It concludes that:

  • Using tapered roofing systems to achieve a U-value of 0.16 W/m2.K could be up to 26.9% cheaper than using alternative methods to create a fall in a flat roof for drainage purposes.
  • Kingspan Thermataper Systems do not need time to dry out, saving time in the scheduling of a construction project
  • Kingspan Thermataper systems can be as little as 1.5% of the weight of a solution using screed to falls with a flat insulation board
Download the Flat Roof Drainage White Paper.
Get Uvalue calculations for flat roofs.