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Expansion joint

A planned gap through a building or slab that lets it expand and contract without cracking.

Expansion joint: illustration
Illustration

What it is

Concrete and masonry grow and shrink with heat and moisture. In long buildings or large slabs, joints break them into parts that can move. The gap is filled with a flexible filler and sealed.

Key points

  • Needed in long buildings and large terraces
  • Runs through the structure, not just the surface
  • Filled with compressible board and sealant
  • Must be waterproofed on terraces

Why it matters

Chennai's hot sun makes terraces expand a lot. Missing joints mean cracks and leaks; badly sealed joints leak too.

How Elamentt handles it

Where the design needs expansion joints, we detail and waterproof them with the terrace.

Next step

See it on your
own plot.

Our studio turns your plot size into a plan, a 3D model built stage by stage, and a list of the cement, steel, bricks and sand it needs. Or ask an engineer.