A roofing specification is much more than a list of products.

The best roofing projects are rarely successful because of a single membrane, insulation board or waterproofing system.

Long-term performance comes from several factors working together

  • Roof design and geometry
  • Substrate condition and suitability
  • Thermal performance requirements
  • Wind load requirements
  • Drainage design
  • Waterproofing system compatibility
  • Detailing around penetrations and upstands
  • Installation quality
  • Future maintenance and accessibility

Many roofing failures are not caused by the waterproofing material itself.

More often, they result from overlooked details, incorrect assumptions or incompatibility between different parts of the roof build-up.

The goal of a specification is not simply to select products.

The goal is to create a complete roofing system that performs as intended throughout its service life.

  • Good products matter
  • Good design matters more
The goal is a complete roof system—not a list of products.