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Understanding The Effects Of Weathering On Sandstone

If you have chosen to use sandstone around your home, it’s likely that you will be interested in what sort of effect weathering will have on it. Not only will this allow you adequate time to prepare for the future, it will also give you the opportunity to take steps towards protecting your pavers from any potential damage.

  • Ice crystallization, also known as ‘ice wedging’ or ‘frost wedging’, is a process that occurs when water is allowed to seep into a pore or crack in the sandstone where it freezes (as water expands when frozen, this could actually fracture the stone).
  • Salt crystallization is a process that occurs when a saline solution is permitted to enter the pores or cracks of your sandstone, where it crystallizes and expands. This can either widen existing cracks or even cause the stone to fracture.
  • Expansion and contraction are actually naturally occurring cycles that cause your sandstone to weaken over time. It occurs as the stone is heated and cooled or is wetted and dried.
  • Lichens and other growths can also damage your sandstone, as they produce chemicals that break down the stone. It can also cause more cracks and holes to appear.

Whilst it may seem impossible to prevent the effects of this sort of weathering from occurring, simply by sealing your sandstone you can take active steps towards preventing it from occurring in the first place. Just make sure that you reseal your surfaces every few years to ensure that the protection is ongoing.