-
Sikalastic®-1KVendor:
Sikalastic®-1K is a one-component, fibre-reinforced flexible cementitious waterproofing mortar for concrete protection and water-retaining or wet-area structures. It can be applied by brush, trowel or spray and is designed for bathrooms, balconies, swimming pools, tanks, below-ground walls and positive or negative-side waterproofing. Compare waterproofing...- $213.07
- $213.07
- Unit price
- per
-
Gripset 2PVendor:
Gripset 2P is a two-part flexible cementitious waterproofing membrane for under-tile, immersed and subterranean applications. It combines cement-based durability with flexibility, high adhesion and fast drying for wet areas, balconies, pools, tanks, planter boxes and retaining structures. Compare waterproofing systems: Browse the full waterproofing...- $188.44
- $188.44
- Unit price
- per
-
Gripset C-1PVendor:
Gripset C-1P is a one-part, fibre-reinforced flexible cementitious waterproofing membrane for positive and negative waterproofing. It is designed for concrete and masonry structures, under-tile areas, basements, retaining walls, pools and water-retaining structures, including applications subject to hydrostatic pressure. Compare waterproofing systems: Browse the full...
- $166.30
- $166.30
- Unit price
- per
-
RLA 2 Part Cementitious Waterproofing MembraneVendor:RLARLA 2 Part is a two-part flexible cementitious waterproofing membrane based on fast-setting high-alumina cement and a high-solids acrylic liquid. It is designed as an under-tile Class II system for balconies, roofs, wet areas and selected swimming-pool applications with strong adhesion to concrete, screeds...
- $251.23
- $251.23
- Unit price
- per
Frequently Asked Questions
What is a cementitious waterproofing membrane?
A cementitious waterproofing membrane is a polymer-modified cement coating that provides a rigid waterproof barrier. Unlike liquid membranes, cementitious membranes are not flexible and must be covered with tiles, screed, or backfill. They suit wet areas, pools, and tanks.
Can I apply a cementitious membrane inside a basement?
Yes. Gripset C-1P and Sikalastic-1K both resist negative water pressure and suit the inside face of retaining walls and basement slabs. Gripset C-1P resists 1.5 bar negative pressure. Sikalastic-1K resists 2.5 bar negative pressure.
Which cementitious membranes are safe for drinking water tanks?
Gripset C-1P, RLA 2 Part Cementitious, and Sikalastic-1K all hold AS 4020 approval for contact with potable water. Use them for concrete rainwater tanks and reservoirs. All three suit immersion service.
Do cementitious membranes bridge cracks in the substrate?
Gripset C-1P and Sikalastic-1K both bridge cracks up to 0.75 mm. Cementitious membranes rely on their polymer content for crack bridging. For wider crack movement, consider a Class III liquid membrane with higher elongation.
What is the difference between single-component and two-part cementitious membranes?
Single-component products such as Gripset C-1P and Sikalastic-1K mix with water only. Two-part products such as Gripset 2P and RLA 2 Part need a liquid polymer additive. Two-part membranes tile in 24 hours. Single-component products need longer immersion cure.