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Find Basement drainage channels installers in Portsmouth

Avatar for NH Projects LLC
NH Projects LLC
5.0(
19
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: Quick response

"Because we were going away for an extended time, and insulation work by others had to be completed first, we had to schedule drywall workday NH Projects under a rather tight time frame. Despite uncooperative weather (lots of rain slowing the drying time), they managed to get everything done as needed, working around other scheduled work they had. They were prompt, professional, and a pleasure to interact with, in addition to doing excellent work."
Our Work
Our Work
Our Work
Our Work
Our Work

+8

Response time5 hrs
1 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Morton Excavation
Morton Excavation
4.9(
11
)

Serving Portsmouth, NH 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

5 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for LEAL RESTORATION SERVICES INC
LEAL RESTORATION SERVICES INC
5.0(
9
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2002

Emergency services offered

Warranties offered

"Roof leak from ice dams. Marcus responded within an hour of requesting quotes at 10 PM. Inspected damage, quote for repairs and evaluation of problem areas in the morning before 10AM next day. 2500 sq ft roof removed and replaced with premium materials in less than 10 working hours. Marcus is very hands on during entire process. If you need a job done right and quickly hire Marcus and his team"
Mold Removal 100% Done
Mold Removal  Services
Black Mold Services
Black Mold Services
Black Mold Inspection Services

+52

Response time4 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.7(
22
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"The team that was sent smelled of weed, first thing I noticed. The work was done quickly, so that was good, but they didn't get an in process inspection and instead sent over an inspector more than a month after the work was done. The dirt that was displaced is just all over my yard now, and I have a bunch of big holes where they didn't pack any dirt. The company offered to fill them but I never heard back after that offer. As part of the work, they dug around the chimney, and it appears they caused it to break. They claim no damage was done, but I'm finding many pieces of concrete and brick strewn over my yard."
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
121 neighbors recently requested a quote
Recommended by59%of homeowners
Avatar for Hard Tech Construction
Hard Tech Construction
4.8(
4
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"Excellent quality of workmanship. Gave me an accurate estimate and well informed of my options so far as materials and design choices. Finished job promptly and when predicted. Walkway and steps are beautiful and blend well with my house and landscape. Guys were courteous, considerate and enjoyable to have around."
Response time2 days
15 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for A 1 Foundation Crack Repair Inc
A 1 Foundation Crack Repair Inc
4.8(
83
)

Serving Portsmouth, NH and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"These guys were amazing from start to finish. The communication from beginning to end was exceptional. Joe arrived on the date agreed and was very punctual, He first explained very clearly the process that he was using and how effective it would be in preventing water from entering my basement through this crack in the foundation. He then proceeded with his work and did so quickly and efficiently leaving no mess behind. I am thoroughly impressed with A-1 and wholeheartedly and highly recommend their high quality services. Plus, with their 10 year warranty, you can rest comfortably. Without doubt, these guys are A1."
Recommended by93%of homeowners
Avatar for Maguire Masonry
Maguire Masonry
4.9(
169
)

Serving Portsmouth, NH and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"Peter was totally professional from start to finish. He was immediately responsive to emails; provided a quote in the given time frame, was punctual in all interactions; and delivered the services in two days as promised. His pricing was fair and reasonable and work quality outstanding. He and his employees completed the work and left the premises in a clean state. I would use Maguire Masonry again personally and would recommend him to others."
Recommended by98%of homeowners
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Showing 1-10 of 103
FAQs for basement drainage channels installation projects in Portsmouth, NH

Expect a well-built French drain to last 30 to 40 years. By channeling both surface- and ground-water away from your foundation, the system relieves hydrostatic pressure and helps prevent costly structural damage. Choose a pipe with a quality cloth filter to keep sediment out and extend the drain’s life. A quick annual inspection and routine cleanouts will keep water flowing freely, ensuring the system continues to protect your home for years to come.

Most French drains sit two feet below grade, but depth ultimately depends on the problem you’re solving. For puddling rainwater or snowmelt, a shallow curtain drain at lawn level often does the trick. To handle rising groundwater, pros dig deeper, down to the footing, and run the pipe beneath the basement slab. A drainage contractor will determine the optimal depth for your specific soil conditions and water issues.

A properly installed interior French drain captures water at the slab, channels it to a sump pit, and directs it safely outside, preventing basement floods before they occur. Because the pipe sits just under the floor edge, a plumber can reach it easily for cleaning or repairs. Pairing the drain with a reliable sump pump gives you the best long-term protection.

Hire a contractor who installs drainage systems every day—typically a foundation specialist, drainage contractor, experienced landscaper, or plumber with waterproofing experience. These pros understand slope, soil, and local codes, and they have the equipment to trench safely around utilities. Ask for references and photos of recent jobs to be sure they can design a system that keeps water off your foundation for decades.

Once the drain is in, patch the yard by reseeding bare spots or replacing plants the crew removed. Inside, look for ways to add value—finishing the basement or upgrading interior waterproofing while the space is open often costs less now than later. Schedule a quick annual checkup to flush sediment and confirm the pipe and sump pump are clear. Consistent maintenance ensures the drain functions properly and protects your investment.

Most policies don’t cover the cost of repairing a French drain itself, but they may provide coverage for water damage if the system fails. Coverage varies by insurer, so be sure to read the fine print or contact your agent before any issues arise. If you live in a high-risk flood zone, consider a separate flood policy to close the gap. Knowing your coverage in advance helps you budget for repairs and avoid unexpected costs.

The Portsmouth, NH homeowners’ guide to basement drainage channels installations

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