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Waterproofing is critical. Precision makes it reliable.

At Griltex, we have developed and patented a dedicated connection system for extruded membranes, specifically designed to meet the demanding requirements of modern waterproofing applications.

Our GXP geomembranes, manufactured from high-density polyethylene (HDPE), are widely used in foundation walls, retaining structures, service roads, green roofs, and water containment projects – wherever long-term waterproofing and drainage performance is essential.

What makes our solution stand out?

  • Linear alignment – eliminates misalignment issues (“banana effect”) on large surfaces
  • Watertight connections – the profile allows for thermal welding or butyl sealing, ensuring leak-tight joints
  • Versatility – connects seamlessly with both textured and flat membranes
  • Efficient installation – specially designed channels provide better grip and stabilisation during application

Our patented joint system improves not only the integrity of waterproofing layers, but also enhances installation speed and reliability – a key factor in both building and civil engineering projects.

If you’re working on below-grade structures, water tanks, drainage layers or green infrastructure – this is a solution engineered to perform.

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