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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 Derry
Retaining Wall Repair, Derry, NH

Retaining Wall Repair, Derry, NH

Before After
Retaining Wall Repair, Derry, NH Retaining Wall Repair, Derry, NH

A retaining wall that was previously removed 25 years ago and had been placed next to the house foundation caused some damage to the house foundation. The retaining wall that was removed was tipping from water damage, no drains had been installed, a not enough rebarb was used when it was installed. The new retaining wall is in very good shape and has had no issues. Over the years the concrete that was used to fix the damage has shrunk leaving a large space between the house foundation and the retaining wall. Erickson Foundation Supportworks sealed the crack with polyurethane foam and a new top leayer of concrete to smooth it out.

Settling Floor in Crawlspace, Derry, NH

Settling Floor in Crawlspace, Derry, NH

Before After
Settling Floor in Crawlspace, Derry, NH Settling Floor in Crawlspace, Derry, NH

These photos are in the crawlspace of a home where the ground was shifting, which resulted in the home sinking 1.5". The before photo shows the old column that needed to be replaced. The after photo views the new SmartJacks that were installed to stabilize the home forever. 

Cracked & Broken Foundation Wall Replacement, Derry, NH

Cracked & Broken Foundation Wall Replacement, Derry, NH

Before After
Cracked & Broken Foundation Wall Replacement, Derry, NH Cracked & Broken Foundation Wall Replacement, Derry, NH

This older foundation on a home in Derry, NH was part stone and part concrete. The stone parts were crumbling and allowing for soil to be pouring into the basement area. The overall stability of the wall was poor, and so Erickson installed an auxillary wall along with some PowerBraces to fully stabilize the wall and clean up the look of the basement.

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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Foundation Repair & Radon Mitigation Specialists in Derry, NH

Foundation Repair Specialists in Derry, NH

For over 35 years the professionals at Erickson Foundation Supportworks have been helping both new and veteran homeowners with problems relating to the foundation of their homes.  Today we still provide the same services we have been doing for over 30 years and have added new ones along the road as well.  Some of our services include wall straightening, bowing wall repair, mud jacking, settlement sinking repair, floor crack repair, and collapsing retaining wall repair among others.

At Erickson Foundation Supportworks, we are a family-operated business dedicated to providing top-quality general contracting services. Our mission is to build relationships as well as homes, providing all our customers with the same high-quality craftsmanship and professionalism, guaranteeing a job done well, on time, and on budget. Don’t let foundation troubles stress you out any longer and contact the professionals at Erickson Foundation Supportworks today!

My 100 year old house was in need of foundation work. Of all the company's I contacted, Erickson was the...
Happy Customers Surrounding Derry, NH

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Reviews From Derry
Testimonials From Derry
Your team, Josh, Cory, Spencer, and Chris have represented the integrity of your company with the highest...
Testimonial by Debbie H. from Derry, NH
It was a pleasure doing business with such honest and reputable people.
Testimonial by Patricia O. from Derry, NH

Erickson Foundation Solutions has been the trusted, local professionals to call in Derry, 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 Derry, 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

Derry, 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 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! We also offer a translucent tinted concrete sealer, DecoShield, which adds a unique visual appeal to your home's slabs while preventing pitting, flaking, cracks, and other moisture-related issues.

Our Concrete Repair Solutions:

  • SealantPro™ Concrete Sealing
  • DecoShield™ Concrete Sealer
  • 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 Derry 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 Derry, 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 Derry, 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 Derry, 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 Derry
This homeowner in Derry, NH discovered cracks in her ceiling and floor of her home on Christmas Eve of 2019. After a few days, she noticed her floors...
The owner of this warehouse in Derry, New Hampshire contacted Erickson Foundation Supportworks when it noticed a section of the wall was cracking,...
Job Stories From Derry, NH
Mitigating Moisture and Preventing Mold, Derry, NH

A homeowner in Derry, New Hampshire, has been living in their home for over 25 years. They have made a few improvements and added some extensions to the house. One of the additions was installed at the back of the house, which required the creation of new foundation walls and a crawlspace. However, about 8 years ago, they started to notice a musty smell stemming from the crawlspace, indicating the presence of mold. They reached out to EFS for a free inspection of their crawlspace. Our Design Specialist, Peter Carstean, met with the homeowner, inspected the crawlspace, and recommended installing a CleanSpace Wall, FlexiSpan, and a 10-foot Buried Downspout to address the problem.


Our installation team arrived at the homeowner's property and started by installing the FlexiSpan over a 5-foot crack in the foundation's corner, where most of the moisture was seeping in and causing increased humidity in the crawlspace. After the FlexiSpan installation, the team proceeded to install our CleanSpace, which is a white sheet that covers the floors and walls of the crawlspace and prevents moisture from penetrating it. To secure each sheet to the floors and walls, we use a special white adhesive tape called CleanSpace Tape, which holds the vapor barrier in place and prevents moisture from seeping in. This system will lower the relative humidity inside the crawlspace and prevent the growth of mold spores. Once everything in the crawlspace was installed, the team then proceeded to install a buried downspout to address the homeowner's issue with water runoff collecting in their yard. We installed a 10-foot buried downspout to carry water further away from their downspout from their gutters.


After completing the installation, our team walked the homeowner through what we had installed and how it would address the problem. The homeowners were very satisfied with the results of the project.

Replacing Leaky Bulkhead Door, Derry, NH

This homeowner in Derry, New Hampshire, has lived in their home for the past 7-8 years. The home was built in 1984 but when they bought it in 2015 they noticed that the bulkhead allowed water to leak into the basement. Now 7-8 years later the bulkhead is still allowing water into the basement so they decided to call EFS for a free inspection of their bulkhead and basement. Our Design Specialist Bryan Barnard met with the homeowner and inspected the bulkhead and the basement to find a solution to stop the water from leaking in. After his inspection, Bryan recommended installing a new bulkhead.

Out Installation Team led by Bob Labrie and Brendan Edwards began by removing the old bulkhead from the home. Once removed, the team began to install the new bulkhead. We made sure to seal around the edges of the bulkhead to make sure water couldn't travel under or around it and get into the basement. Once everything was installed the team did a walkthrough with the homeowner to show them everything that was installed. 

The homeowner was very pleased with the look and functionality of the new bulkhead. 

Replacing Leaky Bulkhead Door, Derry, NH - Photo 1Replacing Leaky Bulkhead Door, Derry, NH - Photo 2
Slopping Floors, Derry, NH

A homeowner in Derry, New Hampshire has lived in their early 1900s home for almost 2 years and has noticed that the floors were sloping. The homeowner decided to call EFS for a free inspection. Our Design Specialist recommended installing SmartJacks into the basement to eliminate any sagging and sloping of the floors.

Our team began by chipping out sections of concrete in the basement so we could install our SmartJacks to the floor system of the home. Once the concrete was chipped out the team installed our footings and then cut our SmartJacks to size so we could attach them to the floor system. The team attached the SmartJacks to the floor system by using an adjustable top and some heavy-duty screws. Once attached the team was able to use the adjustable top and lift up on the floor system. After the floor was adjusted the team then mixed concrete and set the footings of the SmartJacks in concrete. 

The homeowner was impressed by our SmartJacks fixing the sloping and sagging floors in their home. 

Water Entering Basement Through Bulkhead, Derry, NH

A homeowner in Derry, New Hampshire, has lived in their home for the past 13 years. About 2 years ago the homeowners have noticed water entering their basement from their bulkhead. They tried to repair the issue themselves with a bandaid fix but less than a year later the fix didn't hold up. Now the homeowners would like to find a permanent fix so they reached out to EFS for a free inspection of their basement. Our Design Specialist Victor inspected the basement and recommended using a combination of WaterGuard, TrenchGuard, CleanSpace, and an UltraSump to collect any water that enters the basement. 

Our installation team began by installing our UltraSump on the wall next to the bulkhead. The team chipped out some concrete and removed some dirt so they could install the sump pump flush with the floor. Then they plumbed the sump to the exterior of the home and installed an IceGuard and an exterior drainage line too. Next, the team chipped out the perimeter of the bulkhead and along the wall that the bulkhead was on so we can install our WaterGuard against the walls to collect any water. The WaterGuard will all lead back to the UltraSump so it can send the water out of the basement. Additionally, on the bulkhead walls, the team installed CleanSpace to direct the water to the WaterGuard which will be sent to the UltraSump. 

The homeowner was very pleased with the results of the project. They haven't seen any water in their basement since EFS installed the perimeter drainage system. 

Cracked Garage Apron, Derry, NH

A homeowner in Derry, New Hampshire, had moved into their home at the beginning of 2022. The house was built in late 2021 and after living in it for almost a year they noticed a crack in their garage and the garage apron was deteriorating. The homeowners wanted to preserve their new home and prevent things from getting worse. They decided to call EFS for a free inspection and our Design Specialist recommended repairing the apron and sealing the apron. 

Our production team began by chipping out the apron of the garage. After the old apron was removed the team then set up a form to pour a new one. Once they poured and smoothed the apron they had to wait for it to cure, so they then used NexusPro to seal the crack in the garage. To prevent any further cracking the team injected some PolyLevel under the garage slab to fill any voids under the concrete. 

The homeowners were very happy with the results of the project. They don't have to worry about their garage deteriorating anymore. The homeowner can now focus on keeping the rest of their home in good condition for years to come. 

Bulkhead Replacement, Derry, NH

The owner of a duplex in Derry, New Hampshire, has owned the duplex for 12 years. The duplex was built in the 1980s and they noticed the Bulkhead door that leads into the split basement had seen better days. The owners would like to replace the bulkhead door, so they decided to call EFS for a free inspection. Our design specialist measured the bulkhead opening and recommended a bulkhead for the owners. 

Our production team began by removing the old bulkhead from the duplex. After the old bulkhead was removed the team then began to set up the new bulkhead. The team installed the bulkhead and made sure it was secured and sealed correctly. 

The owners were happy with the look of the new bulkhead. 

Bowing Foundation Walls, Derry, NH

A home in Derry, New Hampshire, had been put on the market. A potential buyer asked if someone from EFS could inspect the home's foundation before they think about purchasing the home. Our design specialist inspected the home and found some bowing and settlement in the foundation walls. The potential buyer was still worried about the foundation issues. The design specialist presented a solution. The solution was to install 7 PowerBraces to the back foundation wall and prevent the wall from bowing further.

The potential buyer ended up purchasing the home. After the purchase was complete, our production team installed the braces onto the foundation wall to add strength and rigidity to the wall.

Garage Slab Needs to be Lifted, Derry, NH

A home in Derry, New Hampshire, recently had EFS install Geolocks to the rear of the garage to stop the garage from collapsing. Our team stabilized the garage foundation and then needed to level the garage slab and seal the cracks in the slab. Our production crew used PolyLevel in the garage to level the slab and then used NexusPro to seal the cracks. The homeowners are relieved that their garage was stabilized and repaired properly and is backed up by our warranty.

Geolocks Installation, Derry, NH

This homeowner in Derry, New Hampshire has lived in their home for 49 years. In the past 2-3 years they started to notice some cracking in the detached garage floor along with some sinking in some areas. Over the past couple of years, as they watched the cracks get bigger and bigger, they couldn't help but worry about a potential collapse of their garage. They decided to call EFS for a free inspection. 

Design Specialist Michael LaMalfa inspected the interior and exterior of the garage to understand what is causing the garage floor to crack. Michael found that the back of the garage is getting pushed out causing a crack in the foundation. Michael recommended installing Geolocks to pull that back wall in.

Crew Lead Chris Tremblay and his team installed 4 Geolock to the back of the detached garage. The team was able to stabilize the wall and give the homeowners peace of mind. 

Geolocks Installation, Derry, NH - Photo 1
Duplex Has Cracks In Foundation, Derry, NH

This duplex owner in Derry, New Hampshire recently have one of her tenants inform her of some cracks in the basement. The cracks are lining the perimeter of the wall and seem significant. She decided to call EFS for a free inspection. 

Design Specialist Chris Greenwood did a full interior and exterior inspection of the home. During his inspection, Chris had found some more cracking on the exterior of the foundation. Chris found the root cause of the cracks in the foundation is because the home is sinking on one side. For a foundation to start sinking it could be that there is poor water drainage, poor soil under the home, and some other root causes. Chris advised the homeowner that installing Push Piers to the home will stop the home from sinking. The homeowner agreed.

Crew Lead Scott Crandall and his team arrived at the home and installed 10 Push Pier to the foundation. 

Duplex Has Cracks In Foundation, Derry, NH - Photo 1
Smart Jacks Installation, Derry, NH

This homeowner in Derry, New Hampshire was experiencing some sagging in their floors. The main beam in their basement is sagging. They decided to call EFS for a free inspection.

Design Specialist Jason Vachon arrived at the home and inspected the basement. He recommended that they have SmartJacks installed under their main support beam. 

Crew Lead Ed Nadreau and his team arrived at the home and installed 4 SmartJacks under the main support beam. 

Smart Jacks Installation, Derry, NH - Photo 1
Water is Leaking Into Basement, Derry, NH

Louis F. of Derry, New Hampshire was experiencing water entering the basement and ruining items in storage.  Louis has been living in this home for the past 3 years and has only noticed this problem for the past couple of months. Louis wants to have a dry basement so they don't damage any more personal items. Louis decided to call Erickson Foundation Solutions for a free inspection.

Design Specialist Paul Magowan arrived at the home and inspected the basement. After a thorough inspection, he found that there is an 8 foot crack in the foundation wall. The crack is located under the front steps. Paul recommended that Louis have EFS install 8' of crack seal and a Super Sump system into the basement. 

Crew Lead Branden Edward and Installation Specialist Kyle DeChane arrived at the home and began by sealing the crack in the foundation wall. After the crack was sealed they installed a Super Sump Pump to replace an older and smaller sump pump. This new Super Sump will be able to remove water much faster than the old one.

Crack in Foundation, Derry, NH

Jennifer C. of Derry, New Hampshire had previously been a customer of Erickson Foundation Solutions in 2018. Previously, she had water entering her basement from the back of the home. She had a Fast Drain System and 2 sump pumps installed in her basement. Currently, she has water entering her basement from the front of her home and would like to have that repaired. Like she did in 2018, she reached out to Erickson Foundation Solution for a free inspection. 

Design Specialist Jason Vachon arrived at Jennifer's home and inspected her basement for cracks. Jason found two cracks in the foundation that are right behind where the front stoop is. Jason recommended to Jennifer that it would be a good idea to have the EFS crew install Sentry Seal around the front of her foundation so that no more water can enter the basement. 

Crew Lead Brandon Edwards and Installation Specialist Kyle DeChane and Brian Somers came to the home and installed Sentry Seal. The team had to dig and expose the foundation. Once the foundation is exposed, they attached the Sentry Seal to the foundation wall. The Sentry Seal will not allow any water to enter the basement. 

Crack in Foundation, Derry, NH - Photo 1Crack in Foundation, Derry, NH - Photo 2
Auxiliary Wall Installation, Derry, NH

Ian W. of Derry, New Hampshire just recently bought his home. In his pre-purchase inspection, the home inspector pointed out that the fieldstone wall was beginning to crumble. The inspector highly recommended Erickson Foundation Solutions to look at the foundation. Ian called Erickson Foundation Solutions about a free estimate. 

Design Specialist Jason Vachon arrived at the house and inspected the basement and confirmed what the inspector saw in the pre-purchase inspection. Jason proposed installing an auxiliary wall over the crumbling fieldstone. 

Crew Lead Nick Carelli and his team came to the home and installed the auxiliary wall into the basement.

Smart Jacks Installation, Derry, NH

This homeowner in Derry, New Hampshire lives on Beaver Lake and has been experiencing unlevel floors and the corner of their porch is sinking. Design Specialist Royce Potts came to the home and walked through the home and the basement to better understand what conditions the house was in. He suggested that they install SmartJacks in the crawlspace of the home to add support and lift it some. 

Crew Lead Scott Crandall and his team came to the home and installed the SmartJacks into the crawlspace. Using the SmartJacks gave the home some interior support and some lift. The homeowners were very happy with the results of the project.

EZ Posts Under Existing Structures

This customer was having a sunroom installed on top of their existing deck. The deck was not built for supporting a structure above, and so additional supports were needed below. There was only about 3.5 feet of space beneath the deck, and so getting underneath to dig and pour new concrete piers would not be an easy task.

EZ Posts were an ideal solution, as the existing deck floor was going to be completely covered by the sunroom. This allowed our Erickson Foundation Supportworks crew to cut small holes into the surface of the deck. Through these holes we were able to install EZ posts with our Bobcat using pier extensions.

A project which would have taken 2-3 crew members one or more days to complete was finished within 4 hours. The EZ Posts were installed at depths ranging from 7 to 9 feet. We removed some concrete pillars in order to install two of our EZ Posts, these concrete pillars being only two feet deep. It was a good decision to replace them!


EZ Posts Under Existing Structures - Photo 1
Settling Foundation

This homeowner in Derry, NH contacted us as she noticed a large crack in her garage wall near a corner. Upon inspection, our design specialist observed there were few signs of settling within the house aside from windows being slightly stuck. However, on the outside of the garage, there were significant signs of sinking which would then lead to extensive damage within the home. 

The solution; push piers to raise the sinking corner 3-4 inches and prevent the foundation from sinking any further. 

We excavated the outside of the garage down to the footing of the foundation. We found the general contractor who built the home placed the footings and foundation directly on stumps and trees, which of course is a big mistake. As the trees decomposed, the ground began to sink and took the foundation with it. 

Our push piers were securely fastened to the bottom of the footings on the foundation and driven down 10-12 feet, beneath the sinking soil and into the bedrock below. This will prevent the home from sinking any further. We also slightly lifted the footing up to the bottom of the foundation to reconnect them, however chose to not lift the house too much as there was little damage within the house. Lifting the house too much could possibly have cracked the drywall.

Problem solved and customer satisfied. 

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