Member Erica Clough’s Hillsborough, N.J., home showed ominous signs that the basement needed waterproofing: weeping walls, crumbling concrete block walls and a telltale odor often associated with damp basements.
In her search for a basement waterproofing solution, Clough learned costs varied wildly from contractor to contractor, with estimates ranging from $3,000 to $15,000 for an array of basement waterproofing options. Clough paid about $7,000 for a drain and sump pump installation in her basement.
Exterior waterproofing jobs typically cost five to 10 times more than interior projects because the task requires heavy equipment, more labor and takes longer to complete. Interior jobs may start as low as $2,000, compared to $10,000 for exterior work. Some jobs, however, require a combination of both, based on the needs and setup of the home.
“Every job has its own personality,” says John Rogers, owner of highly rated Rogers Basement Waterproofing in Columbus, Ohio.
Clough says one company continuously called and offered to decrease its price by thousands of dollars — a common tactic used by less-than-reputable businesses, says Mike Trotter, owner of highly rated Trotter Co. in Norcross, Ga. “Most waterproofing is calculated by the [linear] foot,” Trotter says.
In addition to checking Angie's List, Doug Lynch, owner of highly rated A-1 Basement Solutions in Scotch Plains, N.J., recommends hiring a contractor who is a member of the trade organization Basement Health Association, which certifies waterproofers and provides continuing education.
Here are the most common interior and exterior waterproofing methods and information about each to help you understand which could work best for you.
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