Basement Waterproofing Products: What Works & What Doesn’t

Moisture is your home’s No. 1 enemy, leading to hazards like mold growth, water damage, and structural instability. But you don’t have to live with these problems; you have many basement waterproofing options at your disposal.

That said, some methods are more effective than others. We created this comprehensive list of basement waterproofing solutions, noting which ones work and which ones are not long-term solutions so you can make the best decision for your home.

During home construction, footing drains are placed in the ground, and a tar coating—known as dampproofing—is applied to exterior basement walls. These systems are meant to prevent water intrusion, but they quickly fail over time; the wall coating flakes off, and the drains clog or are crushed by surrounding soil.

Digging down to the foundation to reapply coatings or install new drainage systems is an expensive and labor-intensive method. It also requires substantial restoration work afterward. Moreover, the newly applied waterproof coating will eventually break down again, and there’s always the possibility of drainage pipes clogging again, as well.

Interior drains, usually installed around the perimeter and in the sub-floor, arrest leaks before they reach the middle of the basement. They collect leaking water from the walls and floor and direct it to a sump pump system.

Any water intercepted by the perimeter drains collects in a sump pump that quickly pumps the water outside and directs it away from your home. We recommend a clog-free system with battery backup and cast iron motor housing.

Lock out water vapor with a thick wall vapor barrier. This system also helps direct any wall leaks to the perimeter drainage system. If the wall covering and barriers are intact, your basement will remain moisture-free and dry for many years.

Humidity can still be an issue, as levels above 50% contribute to mold growth. Other associated problems include poor air quality, musty smells, and pest infestations. A dehumidifier is a perfect antidote as it controls humidity, cleans and filters the air, and helps prevent conditions favorable for mold to grow. We recommend an energy-efficient, self-draining unit.