Top-rated basement waterproofing pros.

Best basement waterproofing pros near Longboat Key, FL

Enter your zip and get matched with up to 5 pros

Top-Rated Basement waterproofing pros in Longboat Key - Updated Nov 2026

Avatar for Advanced Environmental Services- Florida
Advanced Environmental Services- Florida
4.6(
245
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Longboat Key, FL and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Our experience with this company has been great! We have used their services in the past and was very, very pleased with the work they did for us. Because we were so satisfied with their services, we reached out to them once again to take care of our exterior waterproofing and termite problem. As always, their professionalism is above par. They solved our issues in a timely, thorough and affordable manner. I highly recommend their services to others."
Response time7 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Alpha Foundations
Alpha Foundations
4.3(
216
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Longboat Key, FL and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"I had multiple tunnels made by an armadillo under my house concrete slab that went as far as 22 feet. I needed these to be pressure filled before having a new concrete patio poured. They were able to get the job scheduled quickly and completed on time. Blake and Coop (may be spelled wrong) did a professional job. I would highly recommend this company to anyone in need of foundation repair work."
Protect Your Concrete Before & After
Protect Your Concrete
Lift Your Uneven Concrete
Protect Your Concrete
Lift And Stabilize Your Concrete

+10

Response time1 day
105 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for BULLFROG MOLD AND WATERPROOFING LLC
BULLFROG MOLD AND WATERPROOFING LLC
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Longboat Key, FL and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"Our neighbor's yard slopes down towards our house. So water kept gathering around our foundation and leaking through after rain storms. This caused mold problems inside. Bullfrog waterproofed the foundation and installed a French drain system with catch basin drains to help move water away from this area of our yard. They also handled the mold and water restoration work on the inside at the same time. Thanks again for taking care of everything for us at a difficult time."
Foundation Waterproofing
Foundation Waterproofing
Foundation Waterproofing
Foundation Waterproofing
Foundation Waterproofing

+29

Avatar for Advanced Environmental Services - Gulf Coast
Advanced Environmental Services - Gulf Coast
4.5(
241
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Longboat Key, FL and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"We were experiencing occasional musty smell and humidity in our 1924 old Spanish house that has original wooden floors over a crawl space. I reached out to Advanced Environmental Services; had a great initial call and visit to our house to scope the work with their CEO, David Towner. He answered all my questions and provided a fair price. We contracted and scheduled to have them install a vapor barrier in our crawl space secured to the bottom of the floor joists to help eliminate the issue. The week of the job, three guys showed up and began to work the crawl space. Richie did an amazing job, working in an incredibly tight crawlspace, securing the vapor barrier across all floor joists in the crawl space. I was working from home all week so I had a chance to interact with them as they worked the job to completion. When done, pictures were taken and shared with me showing the vapor barrier attached across my crawl space. The guys were very customer focused and I'm very happy with the work they did. I would definitely recommend them."
Response time3 hrs
Response rate100%
Recommended by96%of homeowners
Showing 1-10 of 40
Basement Waterproofing FAQs, answered by experts

No, you don’t want your crawl space to be wet because water and even moisture in the air under your home can attract insects and rodents, decrease your indoor air quality, increase your energy bills, promote mold growth, and even lead to structural damage. If you notice any signs of water or humidity in your crawl space, you should get the issues addressed immediately by contacting a professional. They can remove moisture and will know how to waterproof your basement to prevent ongoing problems.

Installing a bathroom in a basement isn’t a project for most homeowners. Many parts—plumbing, electricity, and carpentry—go into this project, each requiring expert-level knowledge and tools. One miscalculation can lead to very expensive repairs. Plus, some homeowner’s insurance might not pay for damages caused by a homeowner DIYing this project. You can protect yourself by allowing the pros to complete this job for you. 

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

As the first layer of water protection for your roof deck and the building materials below, underlayment is designed to prevent water damage, so it’s okay if it gets wet. However, you shouldn’t rely solely on underlayment for protection. If rain interrupts your roof project and you have all of the underlayment down, you’ll likely be fine, but you should install shingles over that layer as soon as possible, as long-term exposure can lead to water damage.

Statistics show that 98% of basements will experience some form of water damage over time. However, that doesn’t mean all basements will experience severe flooding. The best way to prevent a water-damaged basement is to keep up with home maintenance and have proper drainage installed outside your home to direct water away from the foundation. You can also consider building a flood wall around the house if you live in a flood-prone area.

The Longboat Key, FL homeowners’ guide to basement waterproofing services

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