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Verified Reviews for Basement Waterproofing pros in Cornish, ME

*The Angi rating for Basement Waterproofing companies in Cornish, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Cornish, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on January 29, 2026

Find Basement waterproofing pros in Cornish

Avatar for Groundworks
Groundworks
4.6(
26
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Cornish, ME and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Joe,James and Bobby did an excellent job replacing the sump pump And drains. My husband and I were so impressed with their abilities and how hard working they were. I would highly recommend Ground works Manchester to anyone who needs the same work done. Thanks to all the gentlemen for their professionalism and work ethic"
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
196 neighbors recently requested a quote
Recommended by56%of homeowners
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Avatar for Morton Excavation
Morton Excavation
4.9(
14
)
Basement Drainage Channels - Install

Serving Cornish, ME and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"I highly recommend Morton Excavations. They did an excellent job, completed the work quickly, and were very professional throughout the entire process."
Gallery
Fire Hydrant install
8in ductile iron / fire hydrant install
Culvert Drainage
Culvert Drainage

+11

8 neighbors recently requested a quote
Recommended by58%of homeowners
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Avatar for Whites Performance Machines
Whites Performance Machines
5.0(
18
)
Basement Drainage Channels - Install

Serving Cornish, ME and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Nick was great to work with. He and his crew did a top notch job going above and beyond what we had needed to be done. I will not hesitate to hire White's Excavation again."
North Berwick Pond 1
North Berwick Pond 2
North Berwick Pond 2
North Berwick Pond 1
North Berwick Pond 2

+15

Response time7 hrs
Response rate92%
6 neighbors recently requested a quote
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Avatar for swb plumbing/hvac
swb plumbing/hvac
5.0(
14
)
Basement Drainage Channels - Install

Serving Cornish, 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%
23 neighbors recently requested a quote
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Avatar for Maine-Line Plumbing
Maine-Line Plumbing
5.0(
2
)
Basement Drainage Channels - Install

Serving Cornish, ME and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Nate communicated with me quickly when I posted my job to fix an outdoor spigot and replace a toilet. He had availability right away, but it turned out that I didn't need him for several weeks. He was able to do the job when I needed him at a very fair price, managed the job well & left things cleaner than he found them. His business is fairly new, but he is a Master Plumber with a lot of professional experience and a very nice guy. We all need a dependable plumber on call, and I've found mine. Hope you'll give him a call on your next job!"
Bathroom sink remodel
Bathroom sink remodel
New Build, Addition.
New Build, Addition.
New Build, Addition.

+4

5 neighbors recently requested a quote
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Avatar for Ames Property Service LLC
Ames Property Service LLC
5.0(
1
)
Basement Drainage Channels - Install

Serving Cornish, ME and surrounding areas

Approved

In business since 2013

Free estimates

Offers commercial services

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!\n

Response time10 mins
Recommended by100%of homeowners
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Avatar for NH Dry Basement, LLC
NH Dry Basement, LLC
4.8(
72
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornish, ME and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"I needed a wet spot in my basement waterproofed ASAP, and they handled it quickly and efficiently. I wasn't available but my realtor was impressed."
Basement
Basement
Flooded Basement
Flooded Basement
Flooded Basement

+1

Response time2 days
Recommended by97%of homeowners
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Avatar for octagon-restoration
octagon-restoration
4.7(
96
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornish, ME and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"It went great. Chris wa very polite, practiced Covid Precaustions and explained what he was doing. He left no mess and my carpets are cleaned."
Water extraction.
Octagon vehicles
Drying structure damaged by water.
MOLD REMEDIATION
Dirty air duct.

+2

Response time6 hrs
Response rate100%
Recommended by90%of homeowners
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Showing 1-10 of 38
Basement Waterproofing questions, answered by experts

Egress windows or doors are required in finished basements to meet safety and building codes. If your basement is unfinished and used as a storage space, egress windows are not required, but anything considered a habitable space must have an additional point of egress in addition to the stairs.

A sump pump can be added to an existing basement. To do this, you will need to use a jackhammer or sledgehammer to break up the concrete and dig a pit. You will also need to create a hole in your basement wall to run the discharge pipe through.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

Although the two terms are closely related and often used interchangeably, pier and beam foundations and crawl spaces are different things. A pier and beam foundation is made up of concrete piers and wooden beams and creates a space under the home known as a crawl space. There are several types of foundations that create crawl spaces, often collectively known as “crawl space foundations,” but the crawl space itself is separate from the foundation. 

If you decide to fill the space around your home’s foundation with landscaping materials, it’s important to consider the aesthetic as well as technical factors like drainage and protection from pests and the elements. Materials such as gravel, rubber mulch, concrete, and brick masonry are all good options.

The Cornish, ME homeowners’ guide to basement waterproofing services

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

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