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What causes wet/damp concrete blocks in a newly built shed?

Over three weeks ago, we had building contractors in to build a turf shed and today there was heavy rainfall all day and we noticed wet/dampness on the inside of the blocks. There are two coats of ...
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1answer
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“Draining” concrete blocks?

We've recently had exterior waterproofing applied our house. In the process, we removed an old cold room that was underneath our porch. They walled up the entrance to the old cold room, and then ...