What is Dimple mat?

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What is Dimple mat?
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What is Dimple mat?

• A dimple mat is a sheet of semi-inflexible
  plastic (usually high-thickness polyethylene)
  that comes in a roll. The plastic is the size of
  an egg container, with jutting dimples that make
  the crust really thick between 1/4 inch and 1/2
  inch thick for the most part.

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• At the point when a dimple mat is put against a
  substantial divider, the dimples make the plastic
  stand apart from the divider, leaving a
  free-depleting air space between the plastic and
  the substantial. Assuming any water arrives at
  this air space, it effectively streams to the
  lower part of the dimple mat.

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Know more-
https//htcghana.com/how-dimple-mats-help-in-water
-proofing/