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TRUSTED BY KEY BISCAYNE, FL HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon18
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Key Biscayne

Avatar for SealProMax New England
SealProMax New England
4.9(
18
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Excellent job, the total cost charged actually saved me lots compared to the other quotes I was given by other companies. I shopped around a lot for good prices. My basement walls had cracks that went straight onto the floors and water was seeping through. Everything was fixed in one day. They came back after a week to do a follow up to make sure everything was good and dry, which it was. Overall very happy and would recommend them."
Waterproofing Ceiling on the computer room
Four Seasons Hotel Boston
Four Seasons Hotel Boston
Four Seasons Hotel Boston
Four Seasons Hotel Boston

+9

Response time1 day
Recommended by93%of homeowners
Avatar for SealProMax New England
SealProMax New England
5.0(
15
)

Serving Key Biscayne, FL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"It comes out exactly what I’m expecting. My basement stays dry until now problem solved without the inconvenience of a construction noise in your basement. The duration of the job is very minimal and the price is reasonable. Very professional."
Basement waterproofing
Michael C
Tear C
Graig
Don

+263

Response time2 days
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Advanced Environmental Services - Palm Beach
Advanced Environmental Services - Palm Beach
4.6(
244
)

Serving Key Biscayne, 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%
12 neighbors recently requested a quote
Avatar for Alpha Foundations
Alpha Foundations
5.0(
66
)

Serving Key Biscayne, FL and surrounding areas

Approved (Corporate)

In business since 2002

Free estimates

Warranties offered

"I had a crawl space encapsulation done three years ago. The work was professionally done by competent friendly patient professionals willing to answer any and all questions about their work. Most recently I had tech Bradley Innocent conduct the annual inspection of the work, replace the filter in the dehumidifier and survey the property for any potential problems. This young man was professional, efficient, and explained what he was there to do and why. Companies need more competent professionals like him."
Protect Your Concrete Before & After
Protect Your Concrete
Lift Your Uneven Concrete
Protect Your Concrete
Lift And Stabilize Your Concrete

+10

161 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for GGR quality construction llc
GGR quality construction llc
5.0(
12
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I highly recommend this plumbing company! They did an excellent job in my home — very professional, punctual, and respectful. The technician explained everything clearly, fixed the problem quickly, and left the area clean. Their prices were fair, and the quality of work was outstanding. I will definitely use their services again and recommend them to anyone who needs reliable plumbing work. Thank you for such great service! ⭐️🔧💧"
22 neighbors recently requested a quote
Avatar for Florida Demolition & Concrete Works Corporation
Florida Demolition & Concrete Works Corporation
5.0(
2
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

Thank you for choosing Florida Demolition & Concrete Works Corporation as your choice for all your demolition, concrete cutting and paving needs. Servicing the entire state of Florida, we take pride in providing quality service, a strong work ethic, and the peace of mind that only comes with a responsible and coordinated team. We put ethics, safety and communication first, since that will earn us your business moving forward. Give us a call, visit our profile page or book us instantly today!

project photos
6 neighbors recently requested a quote
Avatar for Advanced Environmental Services - Miami-Dade
Advanced Environmental Services - Miami-Dade
4.6(
244
)

Serving Key Biscayne, FL and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"From water in my house, due to Hurricane Milton, and the discovery of cracks on the exterior of my concrete block house â ¦ to a week of digging, grinding, cementing, and waterproofing the slab, the interior walls of two rooms, and fixing cracks in the exterior walls of my house, this was quite an experience! As annoying and disruptive as something like this can and will be, all in all it wasnâ t nearly as bad as I anticipated, mainly due to Brian, the lead. He was informative, asked my opinion, explained why things were done as they were, and went over and above to keep me in the loop. Both he and Corey were respectful and pleasant at all times. As you can imagine, as a woman living alone, it is difficult to have male workers in and out of the house. At no time was I concerned. Yes, this experience was a bit disruptive and I knew it would be â ¦ but it was ever so less painful and disruptive than I thought it would be and I thank Brian for that. And, I no longer have to worry about water in my house from hurricanes. May I also say that the response from this company was exceptional. I entered my information into their website the day after the hurricane hit. Within 15 to 20 minutes, I received a phone call from the CEO. We talked a bit and he made an appointment for the next week. He kept me informed by text as to his arrival time and arrived when he said he would. He told me what the company would do and sent a contract to me which I signed. I was given a start date and it never changed. The work that was done by the team that arrived was what he said would happen. How incredibly refreshing that a company actually did what they say they would do in the timeframe that was set. Thank you again. I hope I am never in the position to need this companyâ s services again. ð But, for anyone else out there who is, I donâ t believe you could do much better than Advanced Environmental Services. Five stars are not enough."
Response time7 hrs
Response rate100%
1 neighbors recently requested a quote
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Basement Waterproofing questions, answered by experts

Plan on cleaning your crawl space at least once a year, though twice a year is ideal. During the cleaning, remove any debris or dust and check for potential issues like pest infestations or water damage. The sooner you catch these issues, the easier (and cheaper) it will be to fix them.

Sandbags are the most common and efficient way to create a flood barrier at home. Some local authorities pass them around to homes before the risk of a flood. Otherwise, you can use flood-proof house materials, like burlap or woven plastic bags, to make sandbags and fill them with sand or cat litter. Make sure that when you stack them, they’re tightly laid on top of each other, creating the effect of a firm wall against accumulating water.

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. The chances of mold developing depend on several factors, including the severity of the damage and how quickly the area is cleaned and dried. To prevent mold, you must act quickly—ideally within the first 24 hours. Clean up all water and thoroughly dry the affected area. If the damage is extensive, you were unable to address it immediately, or you suspect mold has already started to grow, it is best to assume it is present and hire a professional mold inspector or removal expert to assess the situation.

Several types of insulation are effective for crawl spaces, with spray foam and rigid foam boards being two of the best options. Closed-cell spray foam insulation is a strong choice because it effectively repels moisture, resists biological growth, seals the air, and provides excellent thermal protection, especially in hard-to-reach areas. Rigid foam insulation boards are another excellent material as they insulate well, resist water damage, and will not settle over time like fiberglass or cellulose.

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.

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

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