The Brew Cabin

Hello Tony,

We are having block paving laid on our driveway. The contractors have got as far as laying the sand and put some of the blocks in placde. Then we have had about 2/3 weeks of rain, during which they have not been able to proceed.

My question is, how dry does the sand have to be before they can continue and finish the project? If the sand is damp, is there any danger of movement after the job has been finished?

Best regards

David

Hi

the sand has to have some moisture content, usually 3-10%, so it doesn't need to be bone dry before laying. A suitable grit sand will drain itself withing an hour of the rain ceasing - if it's retaining water longer than that, then either it's the wrong type of sand or the sub-base isn't draining.