For towns with aging concrete water tanks, the dilemma is usually the same: repair or build new. In repair, re-waterproofing can buy another decade or two so they can budget for the new expense.

Why waterproofing makes sense Since the concrete contractor is at the jobsite in the early days of construction, finding a way to stay there longer and make more money is logical. That's why ...

Think of a basement as a concrete box dug nine or 10 ... you can apply a waterproofing sealer or an epoxy coating. The best approach depends on how much moisture is in the floor.