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*The Angi rating for Structural Engineering companies in Stratham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

*The HomeAdvisor rating for Structural Engineering companies in Stratham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

Last update on October 25, 2025

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EHM

Washington Ave.
4.50(
16
)

EHM

Washington Ave.
4.50(
16
)
Customers say: Quality work
71 years of experience

EHM is a structural moving and elevating company that also specializes in foundation repair and replacement. We have been working in the Midwest since the Great Floods of 1993. We specialize in severely comprised foundation issues. We can elevate, level, pier or replace a wall or your entire foundation. We do not do mudjacking, waterproofing or minor crack repair.

"I did not get the service that we originally talked about I am very unhappy"

Donna S on August 2021

EHM is a structural moving and elevating company that also specializes in foundation repair and replacement. We have been working in the Midwest since the Great Floods of 1993. We specialize in severely comprised foundation issues. We can elevate, level, pier or replace a wall or your entire foundation. We do not do mudjacking, waterproofing or minor crack repair.

"I did not get the service that we originally talked about I am very unhappy"

Donna S on August 2021

Structural Engineering questions, answered by experts

While concrete walls do not need to "breathe" in the traditional sense of the word, they do require waterproofing and dehumidifying methods, particularly in basements below the water table. Concrete both contains moisture from its initial installation and can absorb water when exposed. Ensuring proper basement ventilation , installing a vapor barrier, and controlling water exposure are all important tasks.

Yes, you can build over a stump if the roots are no longer alive. Living roots will continue to grow and may damage your new construction over time. Similarly, you should also remove rotting stumps because they may continue to attract pests and even cause new structures (especially those made from wood) to decompose as well.

The best way to determine if ceiling cracks are structural is to hire a ceiling contractor to inspect the cracks and provide a professional opinion. That said, you might be able to make an educated guess based on the size and appearance of the crack. Larger cracks, cracks accompanied by sagging or discoloration, and cracks that travel from the ceiling down the walls are all signs of structural issues.

Hiring a structural engineer costs about $550 on average. However, prices range from as low as $200 up to $1,500. Structural engineers may charge by project, hourly, or by the square footage, making it important to understand how your chosen engineer structures their estimates. Additional cost factors include project type, the scope of work, the size of the project, and your geographic location.

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

The Stratham, NH homeowners’ guide to structural engineering services

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

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