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Reviews From Grantham
Products & Services
Foundation Repair Services & Products
Push Pier Underpinning for Settlement, Foundation Leveling, Sinking Foundation Repair
Geo-Lock Wall Anchors
Geo-Lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
PolyLevel Commercial Concrete Lifting
EZ Post Deck Repair
ShotCrete Wall Restoration
Bowing Wall Repair Solutions
Cracked Wall Solutions
Buckling Wall Repair

Basement Waterproofing Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement to Beautiful Pre-Finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back-Up
SaniDry Dehumidifier
Sump Pump Systems

Basement & Crawl Space Insulation
Basement Insulation Wall Panels
Basement Insulation Flooring
Basement Floor Tiles
Crawl Space Insulation
Crawl Space Insulation Panels
Crawl Space Encapsulation
Crawl Space Vapor Barriers


Before and After Pictures from Grantham
Dual Sump Pumps Installed in Grantham, NH

Dual Sump Pumps Installed in Grantham, NH

Before After
Dual Sump Pumps Installed in Grantham, NH Dual Sump Pumps Installed in Grantham, NH

A homeowner in Grantham, NH was tired of having water enter her basement.  In search of a permanent solution to stop the water she reached out to Matt Clark's Northern Basement Sytems.  Northern Basement Systems sent out one of their highly qualified System Design Specialist for a FREE ESTIMATE.  After the estimate, a plan was set forth to stop the unwanted water from entering the basement.  First, a Full Perimeter WaterGuard System was install. This will collect the water and divert it to the sump pumps.  The basement was large and had enough water coming in for the need of two pumps.  On the side of the basement where the most water was coming in NBS installed a state-of-the-art TripleSafe Sump Pump.  On the other side they installed a SuperSump Pump.  The pumps will take the water collected by the WaterGuard and take it out of the home down a discharge line far away from the home.  Northern Basement System discharge lines are equipped with IceGuards.  They will prevent any water from not getting out of the home due to freezing in the line.  The homeowner now can enjoy a wonderful dry basement.

Rim Joists Insulated & SaniDry Dehumidifier in Grantham, New Hampshire

Rim Joists Insulated & SaniDry Dehumidifier in Grantham, New Hampshire

Before After
Rim Joists Insulated & SaniDry Dehumidifier in Grantham, New Hampshire Rim Joists Insulated & SaniDry Dehumidifier in Grantham, New Hampshire

In Grantham, New Hampshire a customer was looking to insulate the Rim Joists of his basement and take care of a bad humidity problem.  He hired Matt Clark's Northern Basement Systems to install a state-of-the-art SaniDry Sedona dehumidifier to take care of the humidity.  The Sanidry will keep the basement at a perfect 55% humidity.  Northern Basement Systems sprayed the rim joists with closed-cell polyurethane foam.  The closed-cell foam creates a highly insulated building assembly that's also free of energy-wasting air leaks. Closed-cell is about 3-4 times as dense as open-cell foam, and it provides an R-value of 6-7 per inch.  

Company Awards
Better Business Bureau Certificate of Customer Satisfaction Excellence- 2016 Award
We are proud to recive the Better Business Bureau Certificate of Customer Satisfaction Excellence- 2016 Award. We recived this our... [Read more]
Better Business Bureau Certificate of Customer Satisfaction Excellence
Better Business Bureau Certificate of Customer Satisfaction Excellence. Customer loyatly score of 100% and any customer complaints filed with... [Read more]
Better Business Bureau Certificate of Accreditation
We proudly became accredited with the Better Business Bureau on August 5th, 2011... [Read more]
More Awards

Your Leading Sullivan County, NH Foundation & Structural Repair Company

Happy Customers Surrounding Grantham, NH
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Certified, Highly Trained Professional Basement Waterproofing, Foundation Repair & Crawl Space Repair Company Serving Grantham, NH

Northern Basement Systems not only adheres to the highest industry standards, but we also strive to be an industry leader in the field of home improvement and basement repair. To set ourselves apart from our competition we only use state-of-the-art products and technology which are designed to fix your home in the most efficient and reliable way. We are an authorized Basement Systems and Foundation Supportworks dealer in Grantham, NH with the experience and dedication to getting the job done right the first time. We believe in our work and stand behind everything that we do, we have several warranties to prove it; a 25-year warranty against manufacturing defects on Foundation Repair products, crawl space encapsulation systems, French drains & perimeter drains. And to get the ball rolling we also offer financing options and provide FREE written estimates and inspections!

Grantham, NH’s Leading Basement Waterproofing Company

Regardless of how you use your basement, having a safe and dry space is critical for you and your family. We understand that having a wet basement is incredibly frustrating and can often make you feel helpless. There are usually many factors that lead to a basement being wet and the sheer number of issues may make your head spin. However, because we understand how important your basement is to you and your family we have devoted ourselves to providing solutions that you can rely on. We have a staff full of certified technicians that are each experienced, professional and are guaranteed to give you the results you want in a quick, effective and permanent way. We also offer a transferable lifetime warranty on perimeter & French drain waterproofing systems!

To learn more about basement waterproofing cost, call or click today!

Schedule a Free Basement Waterproofing Estimate

Foundation Repair to Keep Your Home Safe

The foundation of your home is the building block that the rest of your home depends on. Even the smallest foundation issue needs to be addressed seriously because even the most basic issue can lead to a major problem down the line. Even if you don’t think the issue is a big deal call Northern Basement Systems, a company that specializes in foundations, to truly determine the cause of the issue. Northern Basement Systems uses the best products in the industry and has the experience and knowledge to use them efficiently. To learn more about our services such as foundation leveling, basement wall repair, foundation wall repair or foundation underpinning, contact us today!

Crawl Space Repair & Encapsulation Expert

Your home’s crawl space is often neglected. It’s usually too small to be seen as valuable and most people dread going into their crawl spaces because they are often damp and dark spaces that are so low they hurt your back. However, we feel like crawl spaces can be more valuable than that. We offer a variety of crawl space services that are guaranteed to turn your crawl space, regardless of the condition that it’s in, into an inviting and safe storage space. We can make any repairs that are needed and also encapsulate the space with a durable white plastic that brightens it up and creates a barrier from moisture.

Schedule Your Free Estimate

Case Studies From Grantham
A wonderful home in Grantham, New Hampshire had a larger size basement with a larger size water problem. Hit with this misfortune the home owner was...
Work Requests From Grantham, NH
Project Location: Grantham, NH
Got water in basement with storm on 7/21/23. Looks like it came through where wall meets floor and also through basement window. We had DIY floor tiles which we pulled up.
Project Location: Grantham, NH
I have water in my crawlspace, and we don't know where it came from. It's causing mold to grow there.
Project Location: Grantham, NH
Noticed last year some water in our crawl space. Thought it might be water coming in from adjacent garage so built a raised curb at the edge of the garage slab. Noticed it still happening recently and after wet vacuuming out water found a crack in the slab in the corner of the crawl space where the water appears to be coming from. Can provide a photo.
Project Location: Grantham, NH
Water seeping into basement
Project Location: Grantham, NH
Water seeping into my basement from cracks in the floor and around the perimeter where the wall meets the floor.
Project Location: Grantham, NH
Looking for a multi room dehumidifier system.
Project Location: Grantham, NH
Basement flooding along concrete wall
Project Location: Grantham, NH
Cell: 603-727-2762
Project Location: Grantham, NH
I have water that seems to be seeping up from the floor of the bump-out section of our garage.
Project Location: Grantham, NH
Hi, I have an internal basement drainage system, but it is not working 100% anymore. During heavy rains and in the spring when all the snow melts, the basement will get wet. I suspect the system is clogged, but a professional verification will be appreciated and an estimate to fix it. Then, I'm also interested in expanding the drainage system to the outside of the house, to prevent any water to enter the old stone basement in the first place.
Project Location: Grantham, NH
We have chronic water leaking into our basement. The re-barb holes are not filled properly and they leak. The sump pump does not function properly either, it could be in the wrong side of the basement. I have photos from the last storm showing the water entering that I can email you.
Project Location: Grantham, NH
There is a crack in the foundation of my home and water is flooding into the basement
Project Location: Grantham, NH
We have several leaks in our basement that we would like to have fixed.
Project Location: Grantham, NH
My crawl space is sweating everything getting wet

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