Best basement waterproofing pros near Marlow, NH

Q: What are the disadvantages of a crawl space?

• <div><p>Some disadvantages of crawl spaces are mostly regarding the air itself&mdash;moisture build-up and poor ventilation, which can cause problems both in the house and underneath it, even damaging the foundation itself. Crawl spaces are difficult to access and often invite unwanted pests during the hot summer months and the cold winter ones. These hard-to-seal spaces are also susceptible to water damage during periods of heavy rain or melting snow.</p></div>

Q: How long does it take for water to cause structural damage?

• <div><p>Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they&rsquo;ll need to see prolonged exposure before you have structural damage. Mold can start growing within 24 hours, and mold can eat away at the structural components over time. Wood rot is more of a concern, though. Wet and dry rot are fungal infections that set in in moist conditions and rapidly deteriorate wood, causing major structural damage within just a few months in some cases.</p></div>

Q: Does a crawl space add value to your home?

• <div><p>Yes, a crawl space can add value to your home. However, there is a higher chance of it adding value if it is an enclosed crawl space, as this reduces issues caused by excess moisture in the home. That being said, a basement does add more value than a crawl space. </p></div>

Q: Where should I avoid using a dehumidifier?

• <div><p>One handy thing about whole-house dehumidifiers is, once installed, you don&rsquo;t have to worry about placement or changing the dehumidifier&rsquo;s position. But if you are using a portable dehumidifier, we suggest keeping it away from walls, vents, and furniture. It needs a central, unobstructed spot with access to lots of air to do its job.</p></div>

Q: What are the benefits of waterproofing or encapsulating a basement or crawlspace?

• <div><p>Waterproofing or encapsulating protects against moisture, preventing mold growth and structural damage. These services also enhance energy efficiency and improve air quality by keeping humidity levels in check.</p></div>

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Verified Reviews for Basement Waterproofing pros in Marlow, NH

*The Angi rating for Basement Waterproofing companies in Marlow, NH 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 Marlow, NH 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 May 10, 2024

Reviewed in May 2024
He did an awesome job. The stairs came out just as I imagined. He made basement stairs to meet code. This was not part of the original project request. He was very friendly and professional. He was on time and cleaned up before leaving for the day. I am very satisfied with his work and would...
Tim Gagnon Frame to Finish
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Reviewed in September 2023
They should up on time. Was very professional and cleaned up the mess after they where done. I thought it would take all day and they where fast. Im amazed with the job they preformed. They also helped me move one piece of furniture from the second floor to the basement. I am going to ask them...
The Next Best Thing - Odd Job Gurus
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Reviewed in February 2023
Couldn't ask for anything better, honestly. I was out of town for the weekend and my water heater exploded, filling the basement with steam and dumping water on the floor. Called these guys when I heard about it Saturday morning. By the afternoon equipment was on place and by the time I got back...
SERVPRO of Cheshire County
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Reviewed in July 2020
I hired him to do work on my basement stairs and he did a great job. I then made a deposit with him for further work. That was three weeks ago and I have not heard anything since then. He is talented, but not reliable.
Aiken's Carpentry & Masonry - Facebook
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Reviewed in April 2020
Could not have asked for a better experience!- Alexi and his crew are top notch- Very fair pricing, Very professional- had them paint our house and barn along with my theater room and basement-Their attention to detail and pleasing the customer is the best I have had in my 25 yrs owning this...
Génesis painting
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Reviewed in November 2019
Mike did a great job helping me with a difficult to diagnose root cause of a clogged basement floor drain. His expert troubleshooting skills saved me time and associated frustration, ultimately saving me money. Thank you Mike.
Gotme Under Pressure ?, LLC
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Reviewed in October 2018
This was a big job. The crew were a pleasure to deal with. So polite & friendly and such hard workers that did an excellent job! I couldnt be more happy now. They basically turned my basement from a dungeon to a light, bright, user friendly dry basement. I have no worries now if I want to...
Dry Tech Waterproofing Solutions
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Reviewed in October 2015
These guys were great. I had two cracks and the area where the sewer pipe comes through the wall all sealed. They were able to schedule me the same week I called. The technician was in and out in under three hours. O and he was actually on time, that never seems to happen any more. Everything...
Pinnacle Waterproofing and Concrete Repair
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Reviewed in November 2014
This is the second job done for us by Tattersall, and both jobs were handled expertly. Everyone at the company, including the office staff, are very knowledgeable and helpful. Their rates are reasonable for a company that is doing the kind of work that I do not want amateurs monkeying around...
Tattersall Electric Company
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Reviewed in November 2014
Good work. Clean area when done. Very entertaining listening to the banter in the basement
McGinley & Sons Heating & Air Conditioning
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Top-Rated Basement waterproofing pros in Marlow - Updated Nov 2026

Northern Basement Systems

4.6(

)

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Marlow, NH and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Paul Swann evaluated our foundation problem and referred us to an engineer who provided a detailed repair plan. Unfortunately, the nature and scope of the proposed repair plan was outside the parameters of what Northern Basement System's themselves could provide. We appreciated their honesty and have been looking for a contractor to take on the project."

+25

Response time1 day

3 neighbors recently requested a quote

Recommended by88%of homeowners

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Marlow, NH 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"

+16

Response time12 hrs

173 neighbors recently requested a quote

Recommended by56%of homeowners

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Broman Contracting LLC

5.0(

)

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Marlow, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Lorenzo from Broman's called me and set up a time and date to seal our driveway and walkway. They showed up on time were professional and completed the job to my satisfaction. I would highly recommend them."

1 neighbors recently requested a quote

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Green Home Solutions of North Central MA

4.8(

)

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Marlow, NH and surrounding areas

Approved

In business since 2021

Warranties offered

Credit card accepted

"Kenson was able to come in and do the work quietly as I was working from home. He explained all the steps and the possible remediation. Paying by cc did have a heavy charge, but otherwise everything was awesome."

Living Room- Mold remediation - Lowell MA

+11

Response time12 hrs

Response rate90%

43 neighbors recently requested a quote

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W.W. Water Systems, LLC

5.0(

)

Basement Drainage Channels - Repair

Serving Marlow, NH and surrounding areas

Approved

In business since 2010

Free estimates

Offers commercial services

"Problem was solved over the phone. Was very good service. Ralf."

Response time7 hrs

6 neighbors recently requested a quote

Recommended by100%of homeowners

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Parkway Masonry and Construction INC

4.2(

)

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Marlow, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Very happy with parkway masonry and construction we had troubles with water seeping into our basement they got the issue resolved great team of guys"

Response time1 day

Response rate98%

40 neighbors recently requested a quote

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Basement Solutions LLC

New to Angi

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Marlow, 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 specialize in concrete crack repair and injections, basement waterproofing, sump pump installations, basement and egress window installations, crawlspace repair, moisture control, foundation repair and so much more.\nCall us today for a free estimate.

11 neighbors recently requested a quote

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Thunder Mountain Construction, LLC

5.0(

)

Basement Drainage Channels - Install

Serving Marlow, NH and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: Quick response

"He does a superb work. Everything pretty on my house was done by him."

Response time1 day

Recommended by100%of homeowners

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Green Mountain Basement Solutions LLC

4.0(

)

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Marlow, NH and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Mike was able to fit me in the same day for an estimate which surprised me because I'm sure a lot of people are needing his services with all the rain lately but he was in the area that day and came by. Although the company is a nation wide chain, its a franchise and a small business. He is an honest Vermonter with Vermont values which I appreciate. He gave me options but didn't try to talk me into something I couldn't afford and is doing the work within two weeks which I was also happy about being a very busy time for this type of thing."

Recommended by75%of homeowners

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All Pro Waterproofing, Inc.

4.3(

)

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Marlow, NH and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"IT was professional and the job was done to meet clients expectations"

Recommended by91%of homeowners

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Showing 1-10 of 42

Basement Waterproofing FAQs, answered by experts

Some disadvantages of crawl spaces are mostly regarding the air itself—moisture build-up and poor ventilation, which can cause problems both in the house and underneath it, even damaging the foundation itself. Crawl spaces are difficult to access and often invite unwanted pests during the hot summer months and the cold winter ones. These hard-to-seal spaces are also susceptible to water damage during periods of heavy rain or melting snow.

Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they’ll need to see prolonged exposure before you have structural damage. Mold can start growing within 24 hours, and mold can eat away at the structural components over time. Wood rot is more of a concern, though. Wet and dry rot are fungal infections that set in in moist conditions and rapidly deteriorate wood, causing major structural damage within just a few months in some cases.

Yes, a crawl space can add value to your home. However, there is a higher chance of it adding value if it is an enclosed crawl space, as this reduces issues caused by excess moisture in the home. That being said, a basement does add more value than a crawl space.

One handy thing about whole-house dehumidifiers is, once installed, you don’t have to worry about placement or changing the dehumidifier’s position. But if you are using a portable dehumidifier, we suggest keeping it away from walls, vents, and furniture. It needs a central, unobstructed spot with access to lots of air to do its job.

Waterproofing or encapsulating protects against moisture, preventing mold growth and structural damage. These services also enhance energy efficiency and improve air quality by keeping humidity levels in check.

The Marlow, NH homeowners’ guide to basement waterproofing services

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

See all articles

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