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

Avatar for swb plumbing/hvac
swb plumbing/hvac
5.0(
15
)
Basement Drainage Channels - Install

Serving Porter, ME and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"So I live in a older house (1947) so the plumbing is older too. Anytime I used my sink dishwasher or laundry the water would all but flood my basement making it almost unusable. I called and talked to Seth he was able to get to my home the next day and diagnose the problem my pipes in the concrete were old and clogged beyond repair well he managed to completely redo all of my plumbing brand new and have it up and running in a matter of a few hours! I now have a dry usable basement. He gave me a very decent price as well! Now hopefully I don't need another plumber anytime soon but if I do I'm calling seth at SWB!"
New condensate line property piped into existing house sewer to code
1 1/2” water mains
3 zone heat pump install
Install condensate pump and neutralizer to bring existing boiler upto code.
1 1/2” water mains insulated after we installed them.

+10

Response time1 day
Response rate100%
29 neighbors recently requested a quote
Avatar for Four Seasons Masonry And ChimneyConstruction
Four Seasons Masonry And ChimneyConstruction
5.0(
3
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"????? Outstanding Work ? Highly Recommend Four Seasons I recently hired Four Seasons to waterproof my foundation, and I couldn't be happier with the results. From start to finish, they did an excellent job. The crew was professional, hardworking, knowledgeable, and took pride in their work. They did a fantastic job waterproofing the foundation paid attention to the details, and made sure everything was done right. It's not always easy finding a company you can trust, but Four Seasons definitely delivered. The quality of their workmanship and the overall experience exceeded my expectations. I would highly recommend Four Seasons masonry chimney foundation to anyone looking for professional, reliable foundation waterproofing. They did a great job, and I wouldn't hesitate to hire them again! Thank you to the entire Four Seasons team for a job well done!"
Chimney repairs
Chimney repairs
Chimney repairs
Chimney repairs
Chimney repairs

+3

DryLock Systems of New England
4.2(
9
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"Though Rob was extremely courteous and prompt, he quickly diagnosed that we would need to drill into the basement floor to create a sump basin to prevent further flooding, at a total cost of about $4500.00. Wanting a second opinion, I called my plumber. Within seconds of walking into our basement, he found that we already HAD a sump basin, and that an old house trap was clogged and causing backup to the basin. For $1000.00, the plumber removed the house trap and ran the line directly to the sewer, cleaned the sump basin, and we have not had an issue since. In the end, we saved thousands of dollars and a lot of unnecessary drilling which would not have fixed the issue. I do not think that Rob was being deceitful in any way, but I was disturbed that he did not find the existing basin which was under a large, loose tile in the utility room where we stood discussing the issue for 30 minutes. In my desperation to fix the problem, I very nearly did not get a second opinion; boy, am I glad I did!
"
Recommended by100%of homeowners
CZ Plumbing LLC
4.4(
117
)
Basement Drainage Channels - Install

Serving Porter, ME and surrounding areas

In business since 1971

Free estimates

Emergency services offered

"We got TWO (you see in pics one has green seat cover, the other purple) Kohler water saver 1.28gpf plug free toilets! I have special needs with my back and we got exactly what we wanted round bowl and standard height. He upgrades from glacier bay to awesome #1 Kohler us because of an initial miscommunication that we easily worked out. Yay! No more plugging AND water savings so they will pay for themselves within a year. Thank you Chuck. We will call your for our next plumbing job!"
Recommended by94%of homeowners
Avatar for Northeast Home Inspections
Northeast Home Inspections
4.8(
6
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

In business since 2019

Free estimates

Credit card accepted

"I hired him for a home inspection, a radon air test, and a septic inspection. He arrived within 10 min of appointment time. His home inspection was very thorough and a comprehensive report provided in a timely manner. His radon air test was completed in the basement, rather than the lowest living area (stated that there was a laundry hookup in the basement so it had to do down there, despite a full laundry room on the second floor)"
Attic
Attic Access
Septic
Septic
Septic

+15

Response time4 hrs
Recommended by100%of homeowners
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Basement Waterproofing FAQs, answered by experts

You should always hire a structural engineer or a professional and licensed foundation repair company for crawl space repair. These professionals will often be able to treat the symptoms of the issue as well as the underlying problem so that you don’t have ongoing damage. They’ll also often take preventative measures to stop the issue from recurring in the future.

Several factors can impact the cost of waterproofing your basement. Some of the most common cost factors include:

  • Location

  • Square footage

  • Cause of the water leak

  • Type of foundation

  • Accessibility

  • Waterproofing method

  • Materials

  • Contractor experience and availability

  • Engineering reports, if needed

  • Structural and other repairs

  • Permits

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

Yes, you can finish a basement that leaks, as long as you address the leak first. Before finishing a basement, you’ll need to repair any cracks in the walls and waterproof the basement to prevent future leaks. It’s much harder to clean up a water leak from a finished basement than an unfinished one, so preemptively addressing any leaking areas prevents expensive repairs in the future.

A walkout basement is considered to be partially below grade because at least one wall is entirely exposed. In some cases and in specific municipalities, inspectors and appraisers will still count walkout basements as below grade, which means the space can’t serve as living space or be rented out. If you intend on using the area as living space or a separate apartment, you should check with your local building department to make sure it’s legal to do so.

The Porter, ME homeowners’ guide to basement waterproofing services

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