3.2 Cold weather working

Also see:

6.1

3.2.5 Masonry

Masonry shall not be laid in cold weather unless suitable precautions are taken.

When laying masonry in cold weather:

  • brickwork and blockwork should not be built when the air temperature is below 3°C and falling
  • work can resume when the temperature is 1°C and rising with the expectation the temperature will exceed 3°C
  • materials which have been damaged by frost or are frozen should not be used
  • additional covers and insulation will be necessary at very low temperatures
  • polyethylene covers should be used to provide protection and prevent work from becoming saturated (an air gap between the masonry and the covers will enable new masonry to cure)
  • where very severe frosts are expected, heaters may be required
  • protection against frost may be required for up to six days, depending on the severity of the conditions.

Last updated: 2nd January 2024

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