Sand for backfilling
Sand for backfilling . It allows water to pass through very well. And water always flows along the path of least resistance. Therefore, if you equip a sand fill in a denser soil, then all the water will drain into it. If you just need to fill in a hole or make drainage, then this property of sand will only benefit. But this material is not suitable for backfilling pits, wells and foundations. Waterproofing is important for such work, but sand cannot provide it.
There are two ways out in this situation. Either abandon the sand altogether, or equip additional waterproofing. Fortunately, today there are all kinds of mastics, primers and other materials on the market that provide reliable protection from water to foundations and other structures. On the other hand, these are additional costs, and they are not always advisable.
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