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Avatar for Northern Basement Systems
Northern Basement Systems
4.6(
21
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Gorham, NH and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Northern basements was able to fit us in quickly, pulled our crooked cement wall back in-place and sealed the wall to prevent future leaks.  The work was timely, communication was friendly and detailed, and price was as to be expected for the large amount of work that needed to be done.  We are very pleased with the whole process as well as the results.
"
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+25

3 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Basement Solutions LLC
Basement Solutions LLC
New to Angi
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gorham, NH and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

We pride our company on reliability, integrity and quality work. We are experts in our trade. We look forward to earning your business! We have been servicing all of VT and NH for over 25 years with any concrete needs. Our capabilities include coring up to 48? in diameter, cutting to any depth with our wire saw, concrete crack repair and injections, basement waterproofing, sump pump installations, basement and egress window installations, bulkhead door replacements, crawlspace repair, moisture control, concrete replacement up to 500sq feet, foundation repair and so much more.\nCall us today for a free estimate.

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Avatar for SW WOOD LLC
SW WOOD LLC
5.0(
1
)
Basement Drainage Channels - Repair

Serving Gorham, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I was very pleased with the work he did, he has a nice way of explaining things , I sure I will hire him again for other projects when needed he is a very pleasant person to deal with. Tank you Scott for being such a nice guy ."
24 neighbors recently requested a quote
Avatar for Green Mountain Basement Solutions LLC
Green Mountain Basement Solutions LLC
4.0(
30
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gorham, NH and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"The work itself, the actual basement waterproofing appears to be working but our flood season hasn't come yet so, I'm reserving judgement. But, the way the work was done was a problem and the initial way that they got with the problem wasn't satisfactory. Eventually, months after work I did get some resolution but is wasn't a smooth transaction. We moved some of the finished portions of the basement to do their work and the way that that was handled was very sloppy and rushed, and very expensive to repair. And then, when the initial point of having somebody come and look at all my questions, it was not the owner, it was his foreman and it was not dealt within a professional manner. After 2 contacts, tried to explain what the problems were and has offered that they have an annual service to make sure that everything is working and there's a fee for that, though he offered 2 years of that with no cost, so that was a nice gesture. He tried to make up for the problems but like I said, there were problems."
Recommended by75%of homeowners
Avatar for Twin State Basement Services - Home  Facebook
Twin State Basement Services - Home Facebook
3.7(
7
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gorham, NH and surrounding areas

In business since 2018

Free estimates

Credit card accepted

"I hired Twin State Basement Services to install perimeter drains in my basement after experiencing a water problem caused by hydraulic pressure under the floor. From the time I placed the phone call to the completion of the job it was clear to me that I was in excellent hands. I promptly received a call back within 24 hrs of it being placed. In all phases of the job from the size up and quote to the the completion of the job their work was beyond reproach. Refik and his crew were timely, efficient, courteous and professional. What impressed me the most was Refik's attention to detail and his personal commitment to "doing the job right". Nobody likes to have a water problem in their home but doing business with Twin State Basement Services made it much more palatable. This company was a great find for me. Highly recommend."
Response time3 days
Recommended by100%of homeowners
KD Concrete Services, LLC
5.0(
6
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gorham, NH and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"Kyle was on time, honest and an extremely hard worker. He cleaned and sanded down our foundation then used cement to seal the footing and the foundation and also went the extra mile to go to home depot and get something for a huge crack he pointed out in the foundation from top to bottom. He fixed that and then sealed it. Gave the estimate same day he was out. Excellent work. Would highly recommend"
Response time3 days
Recommended by100%of homeowners
Avatar for New England Home Renovations LLC
New England Home Renovations LLC
4.0(
311
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gorham, NH and surrounding areas

In business since 1983

Free estimates

Emergency services offered

"We contacted Richard regarding the job, and had a quote back within the week - good quote.  He quickly responded to any questions  we had, and scheduled the work.  They completed the demo in one day, a few days before the cabinets showed up - if I had to do this again, I would hold off on the demolition until the cabinets were in, as it is difficult to live without a kitchen, especially with children.  It took approximately two weeks for the kitchen to be completed, with slight delays due to a damaged cabinet, time for the new countertops to set, appliance delivery, etc.  One hitch developed when the dishwasher was hooked up incorrectly, and water ran into my basement - I called Richard, and once I got through the answering service, he contacted the plumber, and we resolved the problem immediately over the phone, and the plumber was at my house at 8 the next morning ( a Saturday of a holiday weekend) to permanently fix the problem.  At the end of the two weeks, we had a great new kitchen, well installed, and we were thrilled!"
Before
After's
New boiler install
Removal of cast Iron to PVC.
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+37

Recommended by89%of homeowners
Showing 1-10 of 33
Basement Waterproofing questions, answered by experts

Yes, engineers assess soil load-bearing capacity and provide construction guidelines.

Crawl spaces are prone to issues caused by excess humidity and improper ventilation, but that doesn’t mean you should avoid buying a house with a crawl space. A home that is encapsulated and well-maintained shouldn’t have any more issues than a slab or basement home.

Regular inspections, maintaining proper grading around the foundation, and keeping gutters clear are advisable. Vapor barriers and sealants may need checking for wear after several years.

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. Whether mold develops depends on several factors, including the severity of the water damage and how quickly the area is addressed. To prevent mold, you must act fast—ideally within the first 24 hours. The process involves cleaning up all standing water and thoroughly drying the affected area. If the damage is extensive, the cleanup was delayed, or you suspect mold might be present, it is safest to assume it has grown and contact a professional mold inspector or removal expert to assess the situation.

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

The Gorham, NH homeowners’ guide to basement waterproofing services

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