Hydro-expanding waterstop sealant with a special mix of natural and synthetic rubbers and hydrophilic agents: in contact with water, it increases up to triple its volume compared to the original size. SEALGUM 20.05 is a simple waterstop easy to use, not requiring particular preparation on the supports, pre-shaped compartments, etc..
Hydroexpansive product: +514 %
Shelf-life: 12 months
Density: 1.26 kg/dm³
Resistance to water pressure
B 2 _
Creation of castings and connections with safe and permanent hydraulic hold.
Take care to create the laying site of the waterstop as smooth and even as possible. Remove any flaking, inconsistent, dusty, etc. parts.
SEALGUM 20.05 must be spread on the laying surface and fastened using nails (steel nails plus water approx. every 25 cm). Sealing of the joints is ensured by simple placement side by side and not overlapping the ends. Positioning must guarantee good coverage of 10-12 cm by the concrete, to contain the expansive action generated by hydration.
For particularly disconnected or rough surfaces, you can position SEALGUM 20.05 with the help of a hydro-expanding sealant in a cartridge FLEXSEAL 300.
- Apply by hand
- Cement-based or lime-based mortars
- Prefabricated concrete
- Rock walls
If there is aggressive groundwater or with high saline content, ask for the specific version for this type of application SEALGUM 20.5 SW.