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

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 Hollis
Radon and Sump Pump, Hollis, NH
Radon and Sump Pump, Hollis, NH
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Radon and Sump Pump, Hollis, NH

Before After
Radon and Sump Pump, Hollis, NH Radon and Sump Pump, Hollis, NH

This homeowner had concerns with high radon levels and a high water table. Our team installed a radon mitigation system, as well as a sump pump with battery backup.

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Your Proven Hollis, NH Concrete Repair & Foundation Repair Company

PolyLEVEL was recommended by a friend, job came out great....
Testimonial from Carol from Hollis, NH
Happy Customers Surrounding Hollis, NH
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Reviews From Hollis
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Testimonials From Hollis
Had Erickson's out to install a radon mitigation system and a sump pump. Everyone from beginning to end was extremely professional and nice. Would highly...
Testimonial by Wendy R. from Hollis, NH
Very satisfied with the work completed.
Testimonial by Jake S. from Hollis, NH
The workers were polite. They explained the job and their approach. Very pleased, the work was done well.
Testimonial by Douglas T. from Hollis, NH
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Erickson Foundation Supportworks has been the trusted, local professionals to call in Hollis, NH, for foundation repairs, concrete repair, and radon mitigation. Our in-house team of expert engineers know how to properly determine and repair the structural issues you are going through. We provide a 25-year written warranty for all of our foundation products. With the professionals at Erickson Foundation Supportworks, you can feel safe knowing that your repairs are in good hands.

Photo Galleries From Hollis
View of the fan and pipe pushing out through the roof in the attic.
View of the fan and pipe pushing out through the roof in the attic.
The manometer ensures the radon system is operating correctly.
The manometer ensures the radon system is operating correctly.
View of the pipe extending from beneath the basement slab, up through the home and eventually vented out through the roof.
View of the pipe extending from beneath the basement slab, up through the home and eventually vented out through the roof.
Job Stories From Hollis, NH
Radon Mitigation & Sump Pump, Hollis, NH

Wendy R. of Hollis, NH had concerns with high radon levels in the home she had recently purchased. After testing, levels were at 5.6 pCi/l in the basement. She chose Erickson Foundation Supportworks as her contractor to install a radon mitigation system in order to lower these levels. 

When crew foreman, Nick Carelli, began installation of the system in the basement, he had to drill a 5" hole through the concrete slab. Upon breaking through the slab, he found the water table was very high under the home. He suggested to the new homeowners that if they wanted to fully protect their investment, they should consider installing a water sump pump system. Rather than wait for the water to rise and have a concern with cleanup and possible damage, Wendy decided to be proactive and have the sump pump system in place in order to protect her home.

The entire installation for both systems was quick, clean and precise, and Wendy now has peace of mind with her new home. Her radon problem was solved, and the home is also now protected against any future rising water tables.

Radon Mitigation & Sump Pump, Hollis, NH - Photo 1
Work Requests From Hollis, NH
Vicinity of Colburn Lane in Hollis
Hello, I'm looking for a quote on repairing sunken concrete deck slabs around my pool.
Vicinity of Blood Road in Hollis
Looking for a quote for radon system
Vicinity of Broad Street in Hollis
We need a large stamped concrete patio sealed as well as two walkways. We would like a quote to do this work. Thanks!
Vicinity of Silver Lake Road in Hollis
I have a concrete slab that needs to be leveled and sealed. It's directly on the water on the shore of Silver Lake
Vicinity of Lynne Dr in Hollis
Exposed aggregate pool desk beginning to crack near coping. Looking for someone to repair.
Vicinity of Woodmont Dr in Hollis
Hi, We just had our air tested for radon as a result of routine water tests which indicated high levels. The air came back high, and we have a new construction house but no active system, just the ductwork. Thx
Vicinity of Jewett Lane in Hollis
10pCi/L measured in basement. Would like to address. 20 year old home.
Vicinity of Nartoff Rd in Hollis
We are purchasing this home and inspection has shown radon in air averaging 14.8 in a range of 6.6 to 26.6 pCi/L. Given this I'd like to get a quote for mitigation system.
Vicinity of Pine Hill Rd in Hollis
The interior walls of our garage are spalling? The floors also need to be resurfaced.
Vicinity of Nutting Lane in Hollis
Pool area stamped concrete area has sunken in a couple spots
Vicinity of Crestwood Drive in Hollis
We need a new fan installed in our radon air system.
Vicinity of Ridge Road in Hollis
Radon test results 31.7 pCi/L
Vicinity of Rocky Pond Road in Hollis
We need to have a Radon mitigation system installed.

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