This commercial building rests at grade and presented with a complaint of water penetrating the exterior wall at unknown points along its 250 feet in length. A trained waterproofing specialist identified the source of the problem as a seam at grade which had separated from the floor slab over the years. Further investigation revealed severe degradation to a course of block just below the level of backfill. Repair of the wall structurally along with the application of a Bentonite waterproofing membrane and exterior curtain drain were specified and installed.
OC Basement Waterproofed
A basement finished with the Owens Corning Basement finishing System in 2001 complained about a black stain he discovered on the wall upon removing a panel to gain access to a water meter. Inspection revealed no water penetration and, as there was an existing below floor system, Basement Waterproofing Nationwide specified the installation of it’s high performance vinyl wall board as a vapor barrier. This vapor barrier was tucked behind the dimpled drain board and secured to the cement block walls.
Stairway Drain and Channel Grate
Often the source water seepage in a Wilmington, Delaware basement can be the stairway that leads to the outside from the basement. A builder will typically install a small, circular drain in the floor, at the bottom a set of basement stairs. This drain may lead to a storm drain, sump pump, drywell or, in the experience of Basement Waterproofing Nationwide, too often to nowhere at all. Even when plumbed directly to a sump pump these small drains are easily overwhelmed by quick moving storms and, furthermore, readily blocked by one or more large leaves much like your sink drain is by food and debris.
Basement Waterproofing Nationwide uses high capacity box drains in these applications to yield permanent results. In this case size definitely matters and a 12” box drain is the right size for nearly any stairway drain problem. The grated cover is anti-clog providing enough surface area to catch even the largest volume of water Mother Nature can throw at it. The drain is hard-plumbed into the sump pit for removal outside. Very often it is appropriate to install a channel drain on the interior of the door both as a back up system as well as to avoid replacing the basement door should there be a sealing problem around the door and it is not convenient to replace the door at this time.
Window Well Drain
When you have basement windows in your Baltimore home’s foundation they can be a problem. Given the right amount of rain and the wells that keep the dirt back can actually fill with water allowing it to spill over onto the walls and floor of your basement. Basement Waterproofing Nationwide’s solution in these cases is custom made window well drains. Often a builder or remodeler or even some waterproofing companies will post hole dig on the outside to the footing filling the hole with stone on the premise that:
We find that approach to be fraught with difficulties. BWN prefers to positively control the flow of water plumbing it directly into the sump pit by means of these custom drains. A cement floor is poured at the base of the well making clogging less likely and facilitating easy cleaning of leaves and debris. An atrium drain allows for the water to continue to drain even in the presence of moderate leaves or debris.
Basement Waterproofing Nationwide, Inc.
License MHIC # 30160
109 E. Wheel Road
Bel Air, MD 21015
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