Concrete Expansion Joint Sealant

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Concrete Expansion Joint Sealant


Concrete expands and shrinks with changes in moisture, humidity, and temperature. The overall tendency is for it to shrink, which can cause cracking at a very early age.

Although shrinkage cracking doesn't usually affect the integrity of the concrete, the irregular cracks aren't pretty to look at.

Installing expansion joints in concrete permit independent horizontal and vertical movement between adjoining parts of the structure and help minimize cracking when such movements are restrained.

Concrete isolation joints, or expansion joints, separate or isolate the concrete from other parts of the building structure like walls, footings, columns and piers.


A concrete expansion joint is also used to separate a concrete driveway or patio from a garage slab, sidewalk, stairway, light-pole or any other point or restraint.
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