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Professional basement waterproofing and foundation repair
Basement Waterproofing Services

Professional Basement Waterproofing and Crawl Space Repair in Allentown, PA

Allentown is known for its historic neighborhoods, ongoing downtown revitalization, and strong blend of culture, arts, and residential communities. With many homes throughout the area dating back several decades, basement moisture problems and foundation issues are concerns that many local homeowners encounter--especially during stretches of heavy rain, snow accumulation, and changing seasonal weather conditions.

At Jamison Basement Waterproofing, we help homeowners throughout Allentown safeguard their properties from water intrusion, excess humidity, and foundation damage. Our waterproofing systems are designed to address the challenges commonly found in older Pennsylvania homes while providing long-term protection against moisture-related problems.

The Allentown region experiences warm, humid summers and cold winters with regular rain, snow, and freeze-thaw cycles throughout the year. These conditions can place significant stress on foundation walls, basement floors, and drainage systems. Over time, untreated moisture can lead to leaks, musty odors, mold growth, and structural deterioration beneath your home.

Our knowledgeable waterproofing team offers a full range of basement and foundation services, including interior waterproofing systems, sump pump installation, exterior drainage improvements, crack repair, crawl space moisture control, and foundation stabilization solutions. Every project is tailored to the condition and layout of your home to help create a dry, healthy, and secure basement environment.

For more than 35 years, Jamison Basement Waterproofing has proudly served homeowners across Pennsylvania with reliable service and quality craftsmanship. As a family-owned and operated company, we focus on honest recommendations, dependable results, and long-lasting waterproofing solutions backed by decades of experience and customer trust.

Jamison Basement Waterproofing's Services in Allentown, PA

Our services are designed to keep your home healthy and safe. Here's a list of some of our popular services in Allentown, PA.

Contact Jamison Basement Waterproofing Today

For more information about any of our services, please call 484-276-2272 or send us a message via our online contact form found in our Contact Us page. We would be happy to provide with a quote and answer all your questions about our services.

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Customer Reviews from Allentown and Surrounding Areas ( 4.99
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Happy Customers across Allentown and Surrounding Areas

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April 30, 2026 | Allentown , PA


June 20, 2024 | Allentown, PA

May 16, 2024 | Allentown, PA

October 02, 2023 | Allentown, PA

Our Jamison team designed a solution that would address both the source of moisture and the need for better air quality in the home: 1. Crawl Space Cleanout: • To begin, we thoroughly cleaned out the crawl space, removing any debris, dirt, and organic material. This step was essential to prevent mold growth and provide a clean surface for the moisture barrier. 2. Installation of a Moisture Barrier: • We installed a high-quality moisture barrier across the entire crawl space floor and walls. This thick, durable liner acts as a waterproof seal, preventing moisture from the ground from seeping into the crawl space. • The barrier was carefully sealed at the seams and edges to ensure that no moisture could penetrate and cause future problems. 3. Vapor Barrier Encapsulation: • In addition to the floor, we encapsulated the entire crawl space with an airtight vapor barrier. This added layer of protection ensured that any moisture coming from outside the crawl space was blocked, significantly reducing humidity levels. 4. Dehumidification System: • To further control humidity, we installed an energy-efficient dehumidification system. This system actively removes excess moisture from the air, maintaining a consistent level of dryness and preventing mold and mildew growth. After completing the crawl space encapsulation, the homeowners experienced significant improvements in the homes air quality …

March 09, 2017 | Allentown, PA

Our waterproofing specialist, Steve Custus, met with the homeowners to discuss their concerns. He reassured them that this type of water intrusion was something we’ve encountered many times before and that we had the perfect solution to resolve the issue. • Leaky Bilco Doors: Water was entering through gaps in the Bilco doors, a common problem we see in basements with aging or improperly sealed doorways. • Basement Exit Staircases: In addition to the Bilco doors, water was also leaking in through the basement staircase exit, further exacerbating the issue. • Damp Basement: As a result, the homeowners were dealing with a basement that was damp, musty, and at risk of long-term water damage. Solution: Grate-Trench & Grate Sump Installation After thoroughly assessing the situation, we proposed a simple yet effective solution to address the problem: 1. Grate-Trench Installation: • To tackle the water seepage, Foreman Khain Carter and his team installed the Grate-Trench system across the entire doorway. This innovative drainage system is specifically designed to channel water away from problematic areas, preventing it from seeping into the basement. • The Grate-Trench captures any water entering from the Bilco doors or exit staircases, diverting it to a central point beneath the slab. 2. Grate Sump System: • Once the water is collected by the Grate-Trench, it is directed into the Grate Sump, one of the most reliable and efficient sump pump systems available on the market. • The Grate Sump then pumps the water out of the basement and away from the home’s foundation, ensuring that no water will remain in the basement. • The entire system is designed to keep the basement dry, offering long-term protection against water intrusion. Results: A Dry and Protected Basement After installation, the homeowners experienced immediate results: • Dry Basement: The Grate-Trench and Grate Sump system successfully redirected the water away from the foundation, keeping the basement floor dry even during heavy rainstorms. • Peace of Mind: With the GrateSump working to pump water far from the home’s foundation, the homeowners no longer had to worry about future leaks or water damage. • Long-Term Protection: This solution provides ongoing protection and a lifetime warranty ensuring that water will never seep into the basement again, preserving the structural integrity and comfort of their home. This case highlights how a targeted, efficient solution like the GrateTrench and GrateSump system can provide immediate relief from water seepage problems. The homeowners are now enjoying a dry, comfortable basement and have peace of mind knowing their home is protected from future water damage. If you’re dealing with water seepage issues from Bilco doors or basement staircases, don’t wait for the problem to worsen. Contact Jamison Basement Waterproofing today for a free consultation and let us provide you with a custom solution to keep your basement dry and safe

March 09, 2017 | Allentown, PA

Our waterproofing specialist, Steve Custus, met with the homeowners to discuss their concerns. He reassured them that this type of water intrusion was something we’ve encountered many times before and that we had the perfect solution to resolve the issue. • Leaky Bilco Doors: Water was entering through gaps in the Bilco doors, a common problem we see in basements with aging or improperly sealed doorways. • Basement Exit Staircases: In addition to the Bilco doors, water was also leaking in through the basement staircase exit, further exacerbating the issue. • Damp Basement: As a result, the homeowners were dealing with a basement that was damp, musty, and at risk of long-term water damage. Solution: Grate-Trench & Grate Sump Installation After thoroughly assessing the situation, we proposed a simple yet effective solution to address the problem: 1. Grate-Trench Installation: • To tackle the water seepage, Foreman Khain Carter and his team installed the Grate-Trench system across the entire doorway. This innovative drainage system is specifically designed to channel water away from problematic areas, preventing it from seeping into the basement. • The Grate-Trench captures any water entering from the Bilco doors or exit staircases, diverting it to a central point beneath the slab. 2. Grate Sump System: • Once the water is collected by the Grate-Trench, it is directed into the Grate Sump, one of the most reliable and efficient sump pump systems available on the market. • The Grate Sump then pumps the water out of the basement and away from the home’s foundation, ensuring that no water will remain in the basement. • The entire system is designed to keep the basement dry, offering long-term protection against water intrusion. Results: A Dry and Protected Basement After installation, the homeowners experienced immediate results: • Dry Basement: The Grate-Trench and Grate Sump system successfully redirected the water away from the foundation, keeping the basement floor dry even during heavy rainstorms. • Peace of Mind: With the GrateSump working to pump water far from the home’s foundation, the homeowners no longer had to worry about future leaks or water damage. • Long-Term Protection: This solution provides ongoing protection and a lifetime warranty ensuring that water will never seep into the basement again, preserving the structural integrity and comfort of their home. This case highlights how a targeted, efficient solution like the GrateTrench and GrateSump system can provide immediate relief from water seepage problems. The homeowners are now enjoying a dry, comfortable basement and have peace of mind knowing their home is protected from future water damage. If you’re dealing with water seepage issues from Bilco doors or basement staircases, don’t wait for the problem to worsen. Contact Jamison Basement Waterproofing today for a free consultation and let us provide you with a custom solution to keep your basement dry and safe

Real Client Needs in Allentown

Adam V.

I called to get a free estimate to install an additional sump pump in my basement and scheduled an on-site estimate.

Before and After Job Photos Allentown

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Southampton , Pa

October 14, 2016 | Conshohocken, PA

October 10, 2020 | Washington Crossing, PA

Water was flooding the garage from the driveway entrance..

September 24, 2020 | Abington , PA

The homeowner was looking to finish his basement so we installed a interior drainage system with a moisture vapor barrier the walls and a new GrateSump ..

October 09, 2020 | Wyndmoor , PA

Waterproofing drainage system / moisture vapor barrier / I GrateSump and battery back up plus coating the floor ..

July 28, 2020 | Gladwyne , PA

Water coming in exterior doorway !

September 23, 2020 | Philadelphia , PA

Old Chestnut hill basement / stucco the walls / new drainage system with sump pump and entire new basement floor ..

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Glenside , PA

Philadelphia , PA

Newtown Square , PA

West Chester , PA

iBasement Systems & Crawl Space Systems Certificates in the Philadelphia Area

The iBasement Systems and Crawl Space Systems Certificates were created using specific sets of criteria to provide a healthy indoor living environment. Air pollutants and excessive moisture levels in the basement or crawl space can negatively impact the odors in the home as well as cause health problems with those who live there year-round - including yourself!

We offer 6 levels of iBasement Certificate, and 5 levels Crawl Space Systems Certificate, each designed to solve specific problems and protect your home, family, and property value on the long run.

Basement Space System
Crawl Space System
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