Blog — Waterproofing Expert Advice

French drain — interior or exterior?

When your basement takes on water and a contractor offers you two very different paths — an interior French drain (often called cuvelage) or a traditional exterior French drain — the decision is rarely obvious. Both approaches solve the problem, but not in the same conditions, not at the same price, and not with the same impact on your property. This comparison from Imperméabilisation GSV — based on more than 30 years of jobs across Lanaudière, the Laurentides and the North Shore — gives you what you need to choose with your eyes open.