Concrete Expansion Joint Sealant

What is Concrete Expansion Joint Sealant?

In building construction, an expansion joint is a mid-structure separation of the various elements that combine to make the whole structure. Each element is separated by expansion joints in order to safely allow independent expansion and contraction of construction materials as well as absorbing any vibrations.

With Perth’s extremely variable temperatures our buildings, roads and concrete slabs often expand and contract due to warming and cooling. Without the application of expansion joints, these structures would inevitably crack under temperature stress.


Did you know that currently joint sealing repairs are unregulated in WA? How do you know who to trust? Read more...

When are expansion joints used?

Expansion joints are designed to allow for movement in a structure. The most common places you will see expansion joints are:


Without an expansion joint in place, there won’t be enough space for the tiles to expand with fluctuating temperatures and the tiles will pop up.

Concrete Slabs

As concrete expands and shrinks with changes in temperatures, expansion joints help account for the potential changes.


Expansion joints in brickwork accommodate to movement and help avoid cracks that could form.

Expansion joint sealing


BUSS has been installing expansion joints into Perth structures for over 20 years. BUSS are experts in the supply and installation of all expansion joints tailored to the Perth climate. Expansion joints can be found everywhere from households to buildings, bridges, roads and car parks. For more information on our expansion joint services, call us on (08) 9444 1732 or use the contact form below.

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