Understanding Waterproofing from the Inside

Benchmark Waterproofing pays attention to the unique construction elements of your house and takes these into account to determine the superior method to waterproof your foundation. Waterproofing from the inside or interior waterproofing can be indicated when there is no or insufficient access to the foundation wall on the exterior. Expensive, complicated or permanent outside structures and landscaping can make it more budget-friendly to do the work from the inside. Finally, if your basement is unfinished and open, then interior waterproofing procedures can be very economical and effective.

What does Interior Waterproofing involve? To start, a ten inch portion of the concrete floor right at the floor/wall joint is removed by breaking the concrete and a trench is dug to install a 4 “ stocking-covered weeping tile. The new interior weeping tile is attached to the appropriate drainage, either a sump pump or existing plumbing. Local plumbing code requirements specify the type of connection.

When the new interior system is in place, the walls receive a Delta MS drainage membrane to the level of the exterior grade and the weeping tile is covered with clear gravel to enhance water movement to the perforated tile. Any water coming in from the outside will thus be channelled into the new waterproofing system and carried out of the house through the plumbing connection or sump pump discharge. The final step is the reinstallation of the concrete over the trench area. Your basement waterproofing is then complete and you can finish it and use it confidently.