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The cove joint is the juncture where the floor and wall meet. With heavy or prolonged rains, ground water along the foundation walls and underneath the basement floor can rise, allowing water to seep upward through this joint. This is commonly referred to as hydrostatic pressure.
Sealing the cove joint is usually not recommended, as it will only allow the pressure to build and move elsewhere. Instead, our Basement Advisor will recommend installing a Drain Tile System, which is a perforated pipe embedded in washed stone installed beneath the level of the floor. The system can be installed from either the interior or exterior.
An Interior Drain Tile System is the most common basement waterproofing solution for cove joint seepage. The system relieves the upward pressure by collecting the water beneath the floor and directing it to a sump pump.
An Exterior Drain Tile System can also be used to address cove joint seepage. The main difference, however, is that the hydrostatic pressure is relieved on the exterior. This requires that the wall(s) be excavated.
Your Basement Advisor will be happy to discuss with you the benefits of each waterproofing system. Either system will accomplish the same end result–a dry basement!
Interior Drain Tile is most commonly recommended to address seepage through the cove joint (where the floor and wall meet) or through floor cracks. It is also commonly used as a complete solution to control and prevent just about any type of seepage. The procedure involves opening the floor along the perimeter foundation wall(s) and installing a perforated drain pipe surrounded with washed gravel at the base of the wall. The system collects water from multiple sources and empties it into a sump pump.
Our Forever Flow Drain Tile System is unique in that it doesn’t require maintenance and comes with a transferable lifetime warranty to the homeowner.
Sometimes it is impractical or undesirable to waterproof a basement from the interior. Common examples include seepage over the top of the foundation, porous concrete walls or instances where the basement is highly finished. Exterior waterproofing membranes address the problem from the “positive side” by excavating and applying a coating to the foundation wall. Depending on the situation, it also may involve adding a perforated drain pipe surrounded with washed stone at the base of the trench to get rid of the excess water.
Potential obstructions such as additions, garages and decks need to be taken into consideration. We can remove items such as concrete, asphalt and pavers. In most instances, digging is done by hand to minimize disruption to landscape.
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