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Products & Services
Radon Mitigation
Radon Testing
Radon Detection
Radon Abatement
Radon Mitigation System

Basement Repair 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

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 Concrete Lifting
EZ Post Deck Repair
Shotcrete Wall Restoration

Before and After Pictures from Londonderry
Crack Seal Repairs, Londonderry, NH

Crack Seal Repairs, Londonderry, NH

Before After
Crack Seal Repairs, Londonderry, NH Crack Seal Repairs, Londonderry, NH

This homeowner in Londonderry, NH had a number of cracks in his foundation which were leaking water and causing damage. Erickson Foundation Supportworks permanently sealed them with polyurethane crack injection and an epoxy top coat.

Crack Seal Repair Londonderry, NH

Crack Seal Repair Londonderry, NH

Before After
Crack Seal Repair Londonderry, NH Crack Seal Repair Londonderry, NH

A homeowner in Londonderry, NH had a crack in their foundation that needed to be sealed because of a leak. Paul Magowan looked at the affected area that was leaking and came up with a plan of repairing the leak. Scott Crandall repaired the leaking area by injecting polyurethane into the crack to seal the inside and then an epoxy coating is placed over the affected area for a permanent fix. The first picture shows the area with the crack and leak. The second picture shows Scott's work of using polyurethane and epoxy to permanently seal the leak. 

Radon Mitigation System, Londonderry, NH

Radon Mitigation System, Londonderry, NH

Before After
Radon Mitigation System, Londonderry, NH Radon Mitigation System, Londonderry, NH

This homeowner located in Londonderry, New Hampshire tested their home for radon. The reading they got from the test came back at 3.9 pCi/l. The homeowner wanted to lower this number as much as they can. Design Specialist Paul Magowan came to the home to talk to the homeowners about their options. They settled on installing a radon mitigation system into the home to lower the radon levels. Scott Crandall and his team installed the radon mitigation system into the home and lowered the radon levels to a comfortable level.

Company Awards
Large Business of the Year - Gr. Hudson Chamber of Commerce.
We're proud to be recognized by the Greater Hudson Chamber of Commerce as Large Business of the Year for 2021!... [Read more]
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Trusted Radon Mitigation & Foundation Repair Pros serving Londonderry, NH

Excellent job from start to finish. Very happy with the results and the use of a new technology to fix...
Happy Customers Surrounding Londonderry, NH

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Reviews From Londonderry
Testimonials From Londonderry
Everyone was very helpful and knowledgeable and very professional.
Testimonial by Althea F. from Londonderry, NH

Erickson Foundation Solutions has been the trusted, local professionals to call in Londonderry, NH, for foundation repairs, concrete repair, radon mitigation, basement crack repair and even crawl space repair. Our in-house team of expert engineers know how to properly determine and repair the structural issues you are going through. Whether you have water in your basement or your crawl space, or need concrete lifting, leveling or foundation structural repair, we have your back. We provide a 25-year written warranty for all of our foundation products. With the professionals at Erickson Foundation Solutions, you can feel safe knowing that your repairs are in good hands.

Foundation Repair Contractor Londonderry, NH

No one wants to have to go through structural and foundation repairs, but there are times where you shouldn’t wait any longer and call the trusted local professionals Erickson Foundation Solutions, to get your job done the right way. Our products are designed and tested by Supportworks, Inc.; an international network of more than 100 skilled structural repair contractors. We are the areas only company equipped to fix your repairs with these products. Some of the repairs we take on are:

  • Bowing Walls
  • Sagging Floors
  • Stair-Step Cracks
  • Tilting Chimneys
  • Foundation Cracks
  • Garage Slabs

Londonderry, NH Local Concrete Leveling Expert

Sunken and cracked concrete around your home is not only an eyesore, but is also a safety hazard. As time goes by, if the problem isn’t corrected, it will only get worse. However, you have no reason to fret when you have the professionals at Erickson Foundation Solutions doing the work. Our experts use PolyLevel, a strong, and durable foam material to lift your concrete slabs back into place. We drill small holes into the slab where the foam is injected and expands, raising the concrete into place. Many other contractors will use a technique called mudjacking, but our method doesn’t disturb the area, takes less drying time, and is more affordable.

After repairing your concrete, consider a durable concrete sealant that extends the life of your slabs by 3 to 5 times overall in just one quick application. Our SealantPro concrete sealant bonds with concrete on a molecular level to protect slabs against oil, gasoline, water, debris, and more. Whether you have new slabs or existing slabs, SealantPro will work for you! 

Our Concrete Repair Solutions:

  • SealantPro™
  • Sidewalk Repair
  • Pool Deck Repair
  • Concrete Driveway Repair
  • Mudjacking

The benefits of PolyLevel®:

  • Non-invasive installation
  • Quick application & curing
  • Clean &precise lifting
  • Adjustable & durable for loads of all sizes

Contact us today to schedule a free concrete leveling estimate for your Londonderry home or commercial property!

Get in contact with us today and get your FREE concrete leveling and concrete sealing estimate!

Crawl space repair contractor in Londonderry, NH

The crawl space is often an underappreciated part of the home that often gets issues with mold. Since it is more often an out of sight out of mind, when problems occur with your crawl space it can easily have wide-ranging effects on the entire home. This is especially true since many older crawl spaces were vented due to mistaken beliefs about home construction. These vents make it easy for mold and rot to occur, causing issues throughout the home like uneven floors, foul smells, worsened allergy symptoms, and more.

Crawl Space Repair Services Offered in Londonderry, NH:

  • Crawl space vapor barrier
  • Crawl space waterproofing
  • Crawl space dehumidification
  • Crawl space support posts
  • Crawl space insulation
  • And more!

If you are noticing any of these issues then our experts can help. We offer a wide range of crawl space repair services designed to help your home including encapsulation, waterproofing, insulation, and more. Contact us today to schedule your free estimate!

Radon Gas Mitigation Systems

Radon gas is colorless, odorless, and as cancer-causing as to//bacco and asbestos. Radon gas is produced from the decaying of rocks and soil and comes up from the ground into your crawlspace and basements. The way our radon mitigation systems works in a pipe collects the gases that are coming from the soil. The gas is then piped upwards where a depressurization vent forces the radon out from your home. Our radon mitigation system is completely compatible with the current waterproofing system in your home. Get in contact with us now to learn how to protect your loved ones from the harmful effects of radon gas.

Radon and Indoor Air Quality Services Provided in Londonderry, NH:

  • Radon Testing and Inspections
  • Radon Mitigation and Abatement
  • Indoor Air Quality Testing

Basement Crack Repair

At any stage of your home when water starts to leak, it can lead to serious flooding and serious damage. So when it starts to leak in your basement, act fast. Erickson Foundation Solutions understands how all different types of basement leaks are caused, which is why we provide fast and efficient solutions to handle every source of wall and floor leaks. we also offer egress windows and dehumidifiers

To get a free estimate on basement leaking solutions and crack repair services, call us at 1-855-239-3489 or click below!

Case Studies From Londonderry
A homeowner in Londonderry, New Hampshire, had mold growing in the upstairs of their home. In addition to the mold growth, they had water and high...
This home in Londonderry, NH had an addition added 10 years ago to the rear of the garage, which became a workshop area, as well as a full master...
The homeowner had bought this property in September 2016, and wished to transform the pool shed house in the back into an entertainment space. Before...
Job Stories From Londonderry, NH
Stabilizing Foundation of Business, Londonderry, NH

A business in Londonderry, New Hampshire, was growing and needed to install two additional loading docks to the one they currently have. They decided to call EFS for a free inspection of their foundation. Our Design Specialist Kenny Calabrese met with the building manager and walked through the building and inspected the foundation. Kenny found that installing the two loading docks could cause additional stress to the floors and foundation of the building. Kenny recommended reinforcing the foundation and foundation walls with Push Piers and Helical Piers. 

Our Installation Team led by Neal Foley began by exposing the foundation wall where the loading dock will be installed on. Our team will install 11 Helical Piers under the footing of the foundation and another 9 Helical Piers installed horizontally under the loading docks. Once we exposed the foundation wall all the way to the footing, the team then chipped out some of the footings so we could install our Helical Piers to stabilize the foundation. After we installed the 11 piers along the foundation wall the team then began coring out concrete from the foundation wall. We cored a series of 5 holes to be installed under the 22' wide loading dock and then we cored 4 more holes for the second loading dock that will be 18' wide. These holes will allow us to install our Helical Piers through the foundation wall and stabilize it. After we installed a galvanized plate to the end of the pier and tightened it against the foundation to stabilize the wall. Lastly, the team called the inspector so they could have records for the town. After the inspector did their inspection of our work and confirmed our work we then backfilled and tamped dirt over the piers we installed.

After the project was complete, the business was able to start installing its new loading docks. 

Stabilizing Foundation of Business, Londonderry, NH - Photo 1Stabilizing Foundation of Business, Londonderry, NH - Photo 2
Windows Sticking on Sunroom, Londonderry, NH

A homeowner in Londonderry, New Hampshire, has lived in their home for the past 26 years. About 15 years ago the homeowner built a sunroom onto the back of their home and about 2 years ago the homeowner noticed the windows in the sunroom were getting tight. They felt them getting tighter over time and decided they wanted to find a solution to this problem. They decided to call EFS for a free inspection and our Design Specialist Tom recommended replacing the supports under the sunroom with our Helical Piers. 

Our installation team began by setting up temporary posts around the sunroom. After the temp posts were set up, the team then removed the old posts and began setting them up to send our Helical Piers into the ground. Our team used a hydraulic drive head to send 5 Helicals under the sunroom. They screwed the piers into the ground until they reached 2200 psi. On this job, the average depth of each pier was 12ft. Once all the piers were pressurized the team then attached our porch bracket and cut 6x6 pressure-treated wood to connect the porch bracket to the bottom of the porch. The team made sure the porch was level before removing any of the temporary posts. 

The homeowner was impressed with our Helical Piers and wished they had used them 15 years ago. 

Radon Mitigation and Water Proofing Installation, Londonderry, NH

A homeowner in Londonderry, New Hampshire, had been living in their home for the past 20 years. Since they moved in the homeowners have noticed water entering their basement. They never thought it was that big of an issue since it would only happen during periods of a lot of rain but no the homeowners just want to repair it. Along with the water coming into the basement, the homeowners think that they have high radon levels in their homes and would like to have a radon mitigation system installed. They decided to call EFS for a free inspection, and our design specialist recommended installing a Radon Mitigation System, UltraSump with IceGuard XL, and Flexispan into the basement to reduce the radon and water collecting in the basement. 

Our team began by sealing the crack in the basement with the Flexispan. The Flexispan will cover the crack and create a channel that collects the water that enters through that crack. The team chips out a small section of the concrete to make drainage so the water will never enter the basement. After the Flexispan was set up, the team then moved on to installing the UltraSump and IceGuard XL in the basement. The team first created a basin for the UltraSump by chipping out some concrete and digging out enough dirt to set the basin in the hole. Once the UltraSump fit into the hole, the team began plumbing the sump pump to the exterior of the home. The team finished plumbing the exterior of the home and connected the IceGuard XL to the plumbing. The IceGuard will prevent water from backing up the drainage line causing it back up into the basement. Following the installation of the UltraSump the team began setting up the radon mitigation system. The team first created the extraction point in a predetermined location in the basement. The team drilled through the concrete and connected the PVC pipe to the extraction point to start collecting radon-filled air. The team then fed the PVC piping out to the exterior of the home. The team then installed the Radon Fan to the exterior of the home and attached the radon pipe to the fan and then vented the system above the roof of the home. This will ensure that no radon can re-enter the home. 

Porch is Sinking More Every Year, Londonderry, NH

A homeowner in Londonderry, New Hampshire, had a porch that was sinking more and more every year. For the past five summers, the homeowners have jacked up their porch to try and stop it from sinking. The homeowner also noticed a large void under the edge of their pool deck that they would like filled. The homeowner wanted to find a permanent solution. Our design specialist Michael Bradley recommended using EZ Posts to support the porch and PolyLevel to fill void under the pool deck. 

Our production team began by installing 5 EZ Posts to support the porch. The team removed the concrete piers from the 3 supports in the front and one support from each side. The team replaced the concrete piers with essentially a giant screw. The team used a hydraulic drive head to twist the screw into the ground until sustainable pressure is found. The EZ post is then attached to the wooden support of the porch. After the EZ post were installed, the team moved on to fill the void under the pool deck. The team used the poly spray gun to free spray the void under the pool deck. Once the poly is sprayed out of the gun it rapidly expands to several times its size filling the area it was sprayed into in no time. 

The homeowner was very happy that they don't have to do yearly maintenance on their porch anymore.

Porch is Sinking More Every Year, Londonderry, NH - Photo 1
Stamped Concrete Patio is Sinking, Londonderry, NH

A homeowner in Londonderry, New Hampshire, had a stamped concrete pool patio that is sinking. The patio had been poured at two different times and the concrete is sinking where the two batches of concrete meet. The homeowner would like to have the concrete lifted to eliminate any tripping hazards. Our design specialist Isaac examined the concrete patio and recommended installing PolyLevel to lift the stamped concrete. 

Our production team first created small port holes in the area where the concrete is sinking. The team then used PolyLevel to lift each section of concrete until they were level. After the slabs were leveled, the team used universal concrete to seal the port holes. The homeowner was happy with the results of the project. They are relieved that they don't have to worry about anyone tripping. 

High Humidity Causing Mold Growth, Londonderry, NH

A homeowner in Londonderry, New Hampshire, had mold growing in the upstairs of their home. They also have standing water and high humidity in the basement. Our design specialist examined the basement and noticed the high humidity and the standing water in the basement. After our specialist walked through the basement, they recommended installing a perimeter drainage system, a humidifier, and an air purifier in the basement. 

Our production team first chipped out a 132 linear foot trench around the perimeter of the basement to hold the WaterGuard again the foundation wall. Second, the team chipped out and dug a basin for a Tripesafe Sump Sump. The TripleSafe is placed into the basin and is connected to the perimeter drainage system to collect all of the water and send it outside of the home. On the way out of the home, the water will run through a FreezeGuard. The guard will prevent the discharge line from backing up the system if the water line freezes. Next, the team attached the CleanSpace Encapsulation to the foundation walls in the basement to funnel all water coming down the wall into the perimeter drain. Following the CleanSpace, the team installed a SaniDry dehumidifier and an Aspen Air Purifier in the basement to condition the air. 

With the waterproofing system, the dehumidifier, and the air purifier installed the home will be able to drop the relative humidity and prevent water from collecting in the basement as well as have better air quality in the home. 

CleanSpace Installation Under Family Room, Londonderry, NH

A homeowner in Londonderry, New Hampshire, has lived in their home for 31 years but the home was built 200 years ago. The homeowner would like to encapsulate the area under the family room. The homeowner decided to call EFS for a free inspection. 

Design Specialist Chris Greenwood inspected the basement of the home. Chris measured the total area of the section that the homeowner would like encapsulated. Chris then talked to the homeowner about additional products that are commonly paired with CleanSpace. Chris recommended installing Rim Joist PolyLevel Wall Restoration to ensure that air from the basement doesn't seep into the family room. 

Crew Lead Anthony Rivas and his team installed 830 sqft of CleanSpace and Rim Joist PolyLevel Wall Restoration into the basement. 

Settling Home, Londonderry, NH

This homeowner in Londonderry, New Hampshire has been living in their home for the past 48 years. Over the years, they have noticed some cracking in the garage and the basement but didn't think much of it. Now they realized that the cracks are getting worse every year. They decided to call EFS for a free inspection. 

Design Specialist Chris Greenwood gave the home a full inspection. He found that both the cracks in the garage and the basement are caused by the settling. Chris recommended installing 12 Push Piers to the home. 6 Push Piers in the front and 6 in the back. Chris also recommended Nexus Crack Repair and PolyLevel for the cracks in the foundation wall and garage. 

Crew Lead Scott Crandall and his team arrived and installed all 12 of the Push Piers to the front and back of the home. After the Push Piers are installed, a second crew led by Nick Melo arrived and installed the PolyLevel and Nexus Pro. 

Settling Home, Londonderry, NH - Photo 1
Replacing Lally Columns, Londonderry, NH

Jason G. of Londonderry, New Hampshire, wanted to replace his lally columns in his garage. Design Specialist Paul Magowan came to the home to inspect the garage. Paul proposed that instead of installing new lally columns Jason has EFS install SmartJacks into the garage instead. 

Crew Lead Spencer Ladd and his team came to the home and removed the lally columns and installed the new Smart Jacks into the garage. Before this project, Jason didn't know Smart Jacks were a product but now he trusts them more than lally columns.

Replacing Lally Columns, Londonderry, NH - Photo 1Replacing Lally Columns, Londonderry, NH - Photo 2
Push Piers Installation, Londonderry, NH

Miles C. of Londonderry, New Hampshire was having concerns with his homes foundation. He was experiencing sticking doors and windows, cracks in the foundation walls, sloping and sagging floors, and a cracked slabs outside. Design Specialist Paul Magowan came to the home and looked over all of the homeowner's concerns and proposed that his home would benefit from Push Piers and some PolyLevel.

Crew Lead Nick Melo and his team came to the home and dug down to expose the foundation footing. When they got to the footing they installed Helical Piers in the affected areas to permanently stabilize the walls. After all the piers were pressed down to their desired PSI, the crew filled the void with PolyLevel as well, a polymer based expansion foam.

Foundation Pier Installation, Londonderry, NH

This homeowner in Londonderry, New Hampshire was experiencing their house settling and beginning to sink. With the issues getting worse, the homeowner called Erickson Foundation Solutions and set up a meeting with Design Specialist Paul Magowan. Paul came to the home and looked over the homeowner's concerns. He recommended installing push piers to stabilize and stop the home from sinking any further.

Crew Lead Chris Hanulek and his team came to the home to install the push piers beneath the foundation. They start by digging near the affected areas to expose the footing of the foundation. Then they create a notch on the foundation where they can attach the brackets that hold the push pier in place. Next, they use a hydraulic press to push the pier down into the ground until it hits a substantial force that the home can rest on. Although it is not guaranteed, it is not uncommon to see a house lift a couple of inches. In this case the home was slightly lifted, and permanently stabilized against any further settlement.

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