New and refurbishment waterproofing

The Alsan RS range of cold-applied liquid resin systems offers cost-effective, loadbearing, high-performance, seamless, waterproofing – ideal for roofs, general waterproofing, parking decks, balconies, patios, terraces, pedestrian areas, wet rooms and repairing existing roofs.

The Alsan RS range uses PMMA (polymethyl methacrylate) resin technology. The dramatically fast cure time ensures that the installation can accommodate tight construction schedules.

The waterproofing system is extremely flexible and adheres fully to the substrate, creating a homogeneous waterproofing layer, perfectly fitted to the contours of the roof. This means that applications can be warranted for up to 20 years.

The Alsan systems in principle

The basis of all Alsan RS systems is a highly stable  UV-resistant PMMA formulation, which is applied to the substrate, if necessary using a primer. It can be reinforced with a polyester fleece and is laid in a number of layers according to the application.

Where there is to be pedestrian or vehicular traffic, an Alsan RS 233 self-levelling mortar is added to provide resistance to mechanical stress. Finally, a sealer coat is applied to give an easy-to-clean surface with a range of decorative options.


  • New build roofs, including warm roofs, protected/inverted roofs, and roofs with top loading, such as pavers, ballast, or timber decking
  • Existing worn-out roof coverings, eg, asphalt or single ply
  • Green roofs (eg, beneath the Flag-Soprema Optigreen®system)
  • Flashings and upstands of SBS-modified bitumen roof coverings (eg, Sopralene) and single ply systems (eg, Flagon)
  • Balconies and terraces
  • Parking decks and ramps
  • Surfaces exposed to a wide range of harsh chemicals
  • Roads
  • Internal flooring and wet rooms

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Shane: 087 1484160

Thomas: 087 1317314

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