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I have a crawl space in my house with three rows of breeze blocks, I laid cobblestones 10 years ago along the walls and I did not put sealants and so the plaster was disintegrated and moisture goes up, what is your intervention advice before I contact companies and what precautions to take with them

In the absence of more precise information, we can think that the problem comes from laying pavers. When it rains, the water can not penetrate properly into the ground and splashes down the walls. Before starting expensive and perhaps unnecessary work, one solution is to remove the blocks closest to the walls, over a width of 30 cm for example, and replace them with gravel. If it is a problem of water splash, the moisture will disappear after a few months. You can also build a gutter along the wall to recover the water and remove it from the house.

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