Top-rated basement waterproofing pros.

Best basement waterproofing pros near Delaware, NJ

Enter your zip and get matched with up to 5 pros

TRUSTED BY DELAWARE, NJ HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon13
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Delaware - Updated Nov 2026

Avatar for WEATHER-TITE WATERPROOFING INC.
WEATHER-TITE WATERPROOFING INC.
4.8(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Delaware, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"Professional, reliable, honest and hardworking. Bob was wonderful to work with! We urgently needed basement waterproofing and Bob was efficient and worked in a timely manner. I have already recommended Bob to a friend and will continue to do so!"
Response time12 hrs
23 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Century Masonry & Waterproofing
Century Masonry & Waterproofing
4.9(
64
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Delaware, NJ and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"We had water issues in our basement. They provided great, cost effective solution and explained all the steps for the resolution. Professional, knowledgeable and clean service. We are so satisfied we would not hesitate to recommend them!!"
The beginning
WaterGuard XL
Final Product
CleanSpace around support pillars
CleanSpace on the floor

+26

Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Once & Done Waterproofing Solutions, LLC
Once & Done Waterproofing Solutions, LLC
4.6(
61
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Delaware, NJ and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"First attempt at remediation was disappointing, but subsequently a more aggressive effort was made. I must say I was pleasantly surprised at the level of customer service and concern. In a time when warranties and customer satisfaction are just lip service, it is a refreshing experience to deal with a company that values its customerâ s concerns. I would recommend you consider Once And Done for your basement waterproofing needs.."
job in progress
job in progress
job in progress
job in progress
job in progress

+14

Response time11 hrs
32 neighbors recently requested a quote
Recommended by92%of homeowners
Basement Waterproofing Specialists
4.0(
597
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Delaware, NJ and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I had a serious basement flooding problem. I had my basement waterproofed 2 times. it didn't work! Basement Waterproofing Specialists installed a commercial drain system and after 2 years I have never had a drop of water they are AMAZING, thank you Basement Waterproofing specialists YOU ARE THE BEST!"
Foundation Repair
 Before and After Stone Work
 Mirra Drain
 Mold Remediation
 Clean Work Areas

+67

Response time11 hrs
281 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Groundworks
Groundworks
4.6(
308
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Delaware, NJ and surrounding areas

Approved (Corporate)

In business since 1999

Free estimates

Emergency services offered

"I had a completely new French Drain system installed in one day! Professional courteous service from inspection thru completion. All aspects of the work to be performed were clearly explained along with justification and guaranteed satisfaction. I highly recommend Select Basement Waterproofing and commend Jason on his inspection and his team on a job well done! A pleasure to do business with them!"
Basement
Basement
Basement
Basement
Foundation

+15

Response time1 day
181 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Restored NJ
Restored NJ
4.8(
19
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Delaware, NJ and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

Restored NJ is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Response time3 hrs
Response rate93%
Recommended by89%of homeowners
Hydro-Solutions, Inc.
3.2(
3
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Delaware, NJ and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

Hydro-Solutions, Inc., are experts in Basement Waterproofing and Foundation Repair. We are a locally owned and operated company, that values honesty and integrity in all aspects of our business. Our dedicated team of professionals, have many years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Response time5 hrs
Recommended by100%of homeowners
...
Showing 1-10 of 129
Basement Waterproofing FAQs, answered by experts

Most houses will have vents in the crawl space. This allows for air passage and energy retention, which in many ways can help control the temperature inside the home. If you are able to consider the cost of a crawl space encapsulation, you may not need your crawl space vents at all. 

Water damage to concrete is often gradual and can take months, if not years, for a concrete structure to be fully destroyed. The process often starts with cracks on the surface, followed by sinking slabs and eventually crumbling cement. Therefore, it is important to repair minor damages early to prevent the situation from worsening.

If not properly maintained, an underground downspout may damage your home's foundation. A clogged downspout can back up, causing water to pool around the base of your home and seep into the foundation. Regular inspections and maintenance keep your downspout in good working order, preventing damage and protecting your home.

Whether to waterproof your basement from the interior or exterior depends on several factors, including your budget.

Exterior waterproofing is generally considered the superior method because it stops water at the source, preventing it from seeping into and damaging your basement walls. This approach offers the most protection, making it ideal if you use your basement for storage.

By contrast, interior waterproofing is often less expensive and requires less labor because the area is more accessible.

For maximum protection against water leakage and moisture, applying waterproofing measures to both the inside and outside is the best solution. However, if you must choose only one, stopping water from the outside is the most effective approach to preserve your foundation and prevent damage.

In most cases, it is safe to live in a home with minor foundation problems, but you should not let the issues persist. Virtually all foundations have small cracks from normal settlement, which are not a structural concern but should be sealed to prevent water intrusion. However, major damage—such as large structural cracks, sinking foundations, or bulging walls—can make a home unsafe. Other issues that can pose safety and health risks include poor indoor air quality from mold or pests, uneven floors, and rotten beams or joists. It is always best to have a foundation repair expert or structural engineer inspect any issues to determine if your home is safe to live in.

The Delaware, NJ homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.