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Basement Waterproofing In Philadelphia, Allentown, Norristown and the Main Line

Here at BQ Basement Systems, we've been fixing wet basements in neighborhoods like yours since 2004. Our certified technicians have the expertise you need to get the job done quickly, effectively, and permanently. There's no job too large or small -- and there's no wet basement we can't fix!

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We are authorized Basement Systems® Inc. dealers, granting BQ Basement Systems access to proven products and expert training to provide the most effective and long-term solutions for wet basements. Their products have been keeping basements dry in the United States, Canada, and the United Kingdom since 1987.

Let one of our basement experts come and give you a free waterproofing estimate. We want to help you make your basement dry all the time!


How we solve your basement waterproofing problems

Beyond adding comfort and eliminating dangerous allergens, waterproofing your basement can add value to your property. A home with a wet basement can be much more difficult to sell. In fact, a wet basement is one of the most serious "red flags" that deters buyers. The good news: we offer waterproofing products and services to help solve your basement problems fast. Our solutions include:

  • Sump pump repair
  • Sump pump installation
  • Replacement filters
  • Waterproof wall and floor products
  • Wall and floor crack repairs
  • Replacement windows
  • Water heater flood protection
  • Mold testing & remediation

Our system comes with a lifetime written warranty that's transferable to the next owner, so not only does our system restore value to your house, but it also gives homeowners and buyers confidence that their home is protected.


Leaking and Wet Basement Walls

leaky basement walls

Cracked, leaking basement walls decrease the comfort, value  and safety of your home. Water will have an easier way through these cracks to create moisture problems in your basements, contributing to foundation damage, mold growth and other related issues. 

Materials that are porous or let water in, like concrete walls, act like sponges in that water and vapor can seep and sink through the porous material and into your basement. If you've had concrete that was damp and a few days later dried, this has happened to you.

Contact us today for your free, no obligation estimate to repair the leaking walls in your basement!

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Our basement leaking solutions

Repaired waterproofed basement window leak in Bensalem

A waterproof seal. Prevent future leaks with our basement window sealing system.

  • Floor cracks: Water can rise directly through the porous concrete of your floor slab, a problem that's exacerbated when there's a crack. When you have water coming through the floor, the first step is installing a perimeter drain system. We can also install a direct drainage channel, which will help direct any water that comes through the crack into the drain and your sump pump. Finally, we will backfill the crack with stone and cover it with fresh concrete to prevent future leaks.
  • Wall cracks: The soil around your foundation is filled with water, and even the smallest crack will allow this groundwater to seep into your basement. Much like with floor cracks, the first step to repairing a leaky wall crack is installing one of our drainage systems. We then use an innovative polyurethane sealant called FlexiSpan® to seal the crack. This flexible sealant will never dry or crack and can flex to the natural movement of your foundation wall, ensuring a completely waterproofing seal.
  • Leaky windows: Window frames break down over time, creating separation and allowing water to seep past seals. Once again, the first step for repairing window leaks is a drainage system that funnels the water to your sump pump. We will then create a small hole in the wall under the window with a plastic fitting that directs any water into the drainage system. This is then sealed with a polymer injection for a clean, waterproof finish.

Customer Review
  • By Dan P.
    Horsham, PA
    "I was extremely satisfied with the whole process"

    Customer Review

    By Dan P.
    Horsham, PA

    I was extremely satisfied with the whole process
  • By Beth K.
    Ringoes, NJ
    "Super easy to schedule. Friendly office staff. Great communication. ..."

    Customer Review

    By Beth K.
    Ringoes, NJ

    Super easy to schedule. Friendly office staff. Great communication. Expert execution.
  • By Thomas R.
    Morrisville, PA
    "Nick and Tim did a great job. They represented your company very well."

    Customer Review

    By Thomas R.
    Morrisville, PA

    Nick and Tim did a great job. They represented your company very well.

Exterior Excavation

Heavy equipment is brought in to dig out the entire perimeter of the basement. New drain lines are installed, and sometimes a waterproof coating is applied to foundation walls. This waterproofing strategy is expensive and often damages lawn and garden areas. Exterior drains are prone to clogging with silt and roots over time.

Interior Subfloor Drain

This drain line is installed underneath the basement floor, just inside the foundation walls. The hidden drainage system brings water to a sump pit, where a sump pump automatically pumps it outside. Also known as a French Drain, this system is not prone to clogging; it’s reliable and easy to service.

Interior Baseboard System

A hollow plastic baseboard is installed along the base of basement walls to form a drainage channel that directs water to a sump pump system. A baseboard-type drainage system is sometimes recommended when the basement slab is too thin to accommodate a French Drain.

Negative-side Sealant

This waterproofing technique involves "painting" basement walls and floors with a waterproof, cement-based coating that's supposed to seal out moisture. Even when applied correctly, this thin membrane usually fails in response to prolonged hydrostatic pressure from outside the foundation.

our service area

We serve the following areas

  • Akron
  • Atglen
  • Avondale
  • Bainbridge
  • Bird In Hand
  • Chatham
  • Christiana
  • Cochranville
  • Columbia
  • Conestoga
  • Drumore
  • East Petersburg
  • Elizabethtown
  • Ephrata
  • Gap
  • Gordonville
  • Holtwood
  • Kelton
  • Kemblesville
  • Kinzers
  • Kirkwood
  • Lancaster
  • Landenberg
  • Landisville
  • Leola
  • Lewisville
  • Lincoln University
  • Lititz
  • Manheim
  • Marietta
  • Millersville
  • Mount Joy
  • Mountville
  • New Holland
  • New London
  • New Providence
  • Nottingham
  • Oxford
  • Paradise
  • Parkesburg
  • Peach Bottom
  • Pequea
  • Pomeroy
  • Quarryville
  • Ronks
  • Smoketown
  • Strasburg
  • Washington Boro
  • West Grove
  • Willow Street
Our Locations:

BQ Basement Systems
525 Bethlehem Pike
Erdenheim, PA 19038
1-215-987-6515