Gravel Ballasted Roofs

Systems: Gravel Ballasted Roofs

Loose Laid Membrane Systems with Sikaplan / Sarnafil

Several Sikaplan and Sarnafil single ply membranes are specially designed for use on gravel ballasted roofs where they provide durable, long lasting performance.

  • Resistant against biological micro-organisms
  • Application is even possible at minus temperatures, giving unique flexibility to contractors, their clients and specifiers


Gravel ballasted roofs with Sikaplan or Sarnafil single ply membranes are conventionally installed.

  • The single ply membrane and other roof components, including the thermal insulation, are loose laid
  • The build-up is ballasted with a gravel layer of at least 50 mm and 80 kg/m2
  • The gravel ballast secures the roof waterproofing against wind uplift forces

Liquid Applied Membrane Systems with Sikalastic

The high performance Sikalastic liquid applied membranes provide:

  • Seamless waterproofing
  • Resistance against root penetration and micro-organisms
  • Highly elastic and crack bridging systems


The SikaRoof MTC systems have even more advantages and the application of liquid membranes has never been so easy and safe.

  • Moisture and rain resistant in just 10 minutes after liquid application
  • Totally cold applied
  • Easy detailing
  • Easy installation with simple application tools