are usually made of synthetic elastomeric materials. These are
materials, such as natural or synthetic rubber, that are able to resume
their original shape after having been somehow deformed. They are used
in joints between stone or metal, at expansion joints in masonry, around
window and door openings, and for horizontal surface joints, among many
may be single-component or multicomponent. They generally display good
adhesion, cohesion, elasticity and good weathering characteristics. Common
types include silicone, polyurethane, polysulfide, acrylic, latex and
sealants were the first widely used elastomeric sealant. These are generally
used for joints submerged in liquids such as in swimming pools, fountains,
cooling towers, fuel and chemical storage tanks, wastewater treatment
and petrochemical plants.
in the 1950s by Dow Corning, silicone
based sealants became very popular. From seals around bathtubs and showers
to attaching heat-resistant tiles to the Space Shuttle, silicone has many
sealant or caulking is made from synthetic rubber. It's impermeable
to air and water and used anywhere an airtight rubber seal is needed.
It can be applied to concrete, cinder block, brick, and stone. It's good
for use on gutters, flashing, chimneys, and aluminum siding, for example.
Due to it's bonding ability in wet conditions it is a good choice for
use underground and on roofs. Isobutyl-based sealants are typically
used for glazing joints.
sealants are used in small-scale construction where there is limited
movement between the parts. The term "acrylic" is used for products
that contain a substance derived from acrylic acid. Acrylic sealants can
be used on plastics, wood, concrete and metal - both indoors and outdoors.
They are often used on driveways and to seal airport runways making them
resistant to chemicals and weathering.
removal with Re-mov:
sealants are generally used in applications requiring resistance to abrasion
and cracking due to joint movement. Polyurethane sealants can be pressed,
layered, sprayed, or brushed onto joints but is usually applied with a
caulking gun. It is also often used as a heavy-duty adhesive,
as well as a protective coating.
Latex sealants are used in light building and residential construction.
Acrylic latex caulk is water-soluble when wet, and can be painted over.
It is inexpensive and a serves as a good general-purpose caulking. It
is much easier than silicone caulk to apply and remove when needed. Acrylic
latex includes acrylic polymers, water, latex, and fillers. This combination
of ingredients is particularly good at bonding with rough or porous surfaces
such as masonry, wood, drywall, and plaster. It is better used for filling
small gaps in wood finishing as opposed to large cracks in walls.