Mastic waterstop is a hydrophobic watertight product with similar appearance of butyl rubber waterstop but totally different natures. With single component of mastic, the waterstop will not expand and create any internal joint pressure when exposed to water, so minimal concrete coverage is needed during installation.
Features & benefits:
A coil of black mastic strip waterstop with white separated paper
A coil of mastic strip waterstop
Excellent self-sealing and self-healing properties.
Applied in any weather and temperature.
Excellent adhesion to dry and clean surface.
Easy and quick to install.
Long service time without shrinking, hardening and oxidation over time.
Minimum clear cover is needed.
Suitable to be installed outside rebar to protect the steel form corrosion.
No harm to surrounding concrete.
Applications:
Ideal for all non-moving joints.
Retaining or foundation walls.
Pipe penetrations.
Box culverts.
Vaults and tunnels.
Slab and manholes.
Storage tanks.
Any cast-in-place applications.