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When is the proper time to saw-cut control/contraction joints?

April 26, 2017contraction CONTROL joints time

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When is the proper time to saw-cut control/contraction joints?

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Do not wait until the next day! Contraction joints can be sawed as early as 3 hours after placement, but do not exceed the 12th hour. To determine the proper time of saw cutting, operation should not cause surface deformation or raveling along the edges of the joint. An early-entry, dry-saw machine is recommended.