Are Concrete Pools Waterproof? Most people in all probability think swimming swimming pools are waterproof. You may be shocked to be taught that most pools are usually not truly waterproof. Sure, vinyl liner and fiberglass swimming pools are, or a minimum of ought to be. But in-floor concrete swimming pools are not. In this article, let's discuss the strategy of waterproofing for concrete swimming pools, and if waterproofing is critical on your pool. Concrete is of course porous and not waterpro...