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They are pre-cured elastic strips with greater
than 800% elongation and superior weathering
characteristics. These strips or tapes are installed
by covering the joint and using the silicone or
urethane sealants for bonding on either side.
They are used for rehabilitation of joints that
have failed and replacement to cutting out and
re-caulking.
Do not use when there is vehicular traffic.
Precompressed foam sealants:
These are open-cell polyurethane foam,
impregnated with neoprene rubber sealant. They
are manufactured to the required dimensions but
are expensive.
Do not use for submersion or below-grade
applications. Possible staining of substrate
may occur.
Sealants are not only the most important and
widely used waterproofing materials, but also
the most incorrectly used. They are minor cost
items, but contribute a major function in a
building’s life cycle.
We ask a lot from our sealants, but we do not
treat them very well!
They are required to provide watertight
transitions between different materials, to secure
waterproofed joints between similar materials
(e.g. sheet membrane joints) and provide
watertight expansion capability between moving
building components.
How many times have you heard
“caulking is
caulking”!
This is totally false.