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TRUSTED BY WINDHAM, ME HOMEOWNERS

  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon35
    Verified foundation repairs reviews

Top-Rated Foundation repair specialists in Windham - Updated Nov 2026

Avatar for A.G. Construction, LLC
A.G. Construction, LLC
4.8(
6
)
Foundation Drainage - Install or Replace

Serving Windham, ME and surrounding areas

Approved

In business since 2010

Free estimates

Offers commercial services

"Andrew and his crew did an amazing job building this garage. Even though he ran into some issues with the supplier of products he went above and beyond to make sure we were kept informed. Additionally, he also replaced (and improved) an existing garage door in the lower level of our home. He also repaired some siding on our house. They even put our two garage door openers in. Overall, we were more than please with his work and his crew."
Jefferson Deck Rebuild
Jefferson Deck Rebuild
Jefferson Deck Rebuild
Camp on post
Camp on post

+27

Response time2 days
Recommended by100%of homeowners
Avatar for The Eagles LLC
The Eagles LLC
New to Angi
Concrete Foundation - RaiseConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Windham, ME and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

The Eagles are specialized in Masonry and Waterproofing. The Eagles Focus on New Buildings, Repairs, Designs, Extensions, demolitions, Etc. We Provide work related to bricks, chimneys, retaining walls, veneer stone, blue stone, granite stone, pavers, Asphalt driveways, concrete slab, basement foundations, patio, decking, fencing, cinder block walls and snow removal. We also provide free estimates for any project around Massachusetts and New Hampshire. Please give us a call or mail at any time to provide an appointment or meeting to your location to provide an instant estimate or for building any designs. \n

Chimney Completely Finished
Chimney Repointing
Stairs Restoration
Stairs Restoration
Stairs Restoration

+67

6 neighbors recently requested a quote
Avatar for octagon-restoration
octagon-restoration
4.7(
96
)
Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, ME and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"I called Octagon the day after we had an upstairs water leak. The next day, Octagan had scheduled a technician to assess the damage and set up the mitigation solutions to dry out the damage before mold could set in. Everyone from Octagon was friendly, professional and very responsive. If you need a fast, reliable and effective response, you will find it with Octagon!"
Water extraction.
Octagon vehicles
Drying structure damaged by water.
MOLD REMEDIATION
Dirty air duct.

+2

Response time6 hrs
Response rate100%
Recommended by90%of homeowners
DryLock Systems
3.8(
68
)
Concrete Foundation - RepairFoundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, ME and surrounding areas

In business since 1985

Free estimates

Warranties offered

"Rob and Jacob did an amazing job repairing our sump pump setup and repairing leaks in our basement. They are very professional and helpful, worked cleanly and explained everything that they were doing. We recommend them highly."
Response time2 days
Recommended by97%of homeowners
...
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Foundation Repair FAQs, answered by experts

A sinking foundation can be lifted, most often by installing piers to re-level and support the weight of the house. Depending on the cause and extent of the sinking, other methods to lift a foundation include underpinning and mudjacking. Consult a foundation repair pro to determine the best way to lift your sinking foundation. 

Tree roots don’t necessarily break through concrete on their own, but they can certainly take advantage of existing cracks, even very small ones. As roots grow, they expand the cracks, making them larger and leading to serious and costly foundation damage. It’s a good idea to have repairs on any foundation cracks you’re concerned about.

There are a few ways to reinforce a pier and beam foundation, including installing additional piers and beams for added support and performing underpinning, which redistributes the weight of your home further down into the ground where frost and soil expansion don’t pose a threat to the foundation. The best option for reinforcement varies based on your particular home and the soil conditions beneath it.

Around 25% of homes have foundation problems - it’s a very common issue. Foundation problems can range from very minor to severe and urgent. Call a foundation inspector to determine the severity of any potential issues you identify with your foundation.

You have different options depending on the scale of repair needed. If you are repairing minor cracks that are between ¼ inch to 1.5 inch wide and less than half an inch deep, a self-leveling polyurethane sealant would be your best choice. Polyurethane sealants dry to the touch within one to two hours. Since they come in a tube applier, you also have the option to complete the repair without emptying out your garage.

The Windham, ME homeowners’ guide to foundation repairs

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