Can a slab foundation sink?

• <div><p>Yes, slab foundations can sink just like any other foundation type. Floating slabs are the most prone to differential settlement and foundation sinking because they sit directly on the surface of the earth. Slab foundations that have footings—including <a href="https://www.angi.com/articles/slab-on-grade-foundation.htm">slab-on-grade foundations</a> and monolithic slab foundations—get additional support from soil further down and are less likely to sink over time, especially under larger, heavier structures.</p></div>

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Q: How do you seal a leaky concrete slab?

• <div><p>You can <a href="https://www.angi.com/articles/how-to-seal-concrete.htm">seal a concrete slab</a> by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.</p></div>

Q: How do you know if you have a leak under your foundation?

• <div><p>A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it&rsquo;s a plumbing line embedded in your slab, you&rsquo;ll also likely notice above-average water bills.</p></div>

Q: What happens if you get caught doing foundation repair without a permit?

• <div><p>If your building department catches you or a contractor doing foundation work without proper permits, they will likely put the work on hold until you secure the necessary permits, which can cause delays of days or even weeks. You can also face violation charges for construction without a permit, which can cost hundreds, depending on where you live.</p></div>

Q: How do you strengthen a weak foundation?

• <div><p>You can strengthen a weak foundation using a few different foundation repair methods, including underpinning, slab jacking, foam jacking, installing carbon fiber support strips, or using a sealant or epoxy crack injection. It&rsquo;s worth noting that the best way to strengthen your foundation permanently is to fix the underlying issue first and then use a permanent solution to reinforce it. If you&rsquo;re unsure <a href="https://www.angi.com/articles/who-do-i-hire-foundation-repair.htm">who to call for foundation repairs</a>, a foundation repair contractor or structural engineer can help find the best solution for your home.</p></div>

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Verified Reviews for Foundation Repair pros in Ester, AK

*The Angi rating for Foundation Repair companies in Ester, AK is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

*The HomeAdvisor rating for Foundation Repair companies in Ester, AK is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

Last update on July 13, 2024

Reviewed in July 2024
I have had several homes repaired over the years by numerous contractors and this is by far the best experience I have ever had!! Would recommend 10/10!!
I. E. J., LLC
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Reviewed in February 2024
Repaired multiple holes in my drywall, large and small. Did the job correctly and professionally. He placed backer board, sheetrock patches, dry wall tape around the edges, and speckled in multiple coats. Then he sanded the areas, applied texture, and cleaned up all the debris. The repaired...
Armor Maintenance
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Reviewed in October 2023
Branden was great to work with. He and his crew did a fantastic job of replacing our 20+ year old deck foundation. We had great communication and the job was done quickly and well. I recommend Roybal Construction highly!
Roybal Construction LLC
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Reviewed in June 2023
The repair guy will be back with my parts and will be doing a maintenance job on my dryer 10-14 days when the washer parts come in. He requested a 50% down payment before parts were order.
Appliance Doctor
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Reviewed in May 2022
These guys are a new small business and have been a pleasure to work with so far and know their stuff. We had a door installed and a deck / stairs repaired and we'll be moving onto our kitchen next. All in all, fantastic service and friendly people! A good option for interior Alaska.
A & A Services
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Reviewed in February 2021
I called three months ago to have an expansion tank and zone switches replaced on my boiler. They did not bring out any parts in order to repair. So they come out a second time to do the job. Was it fixed? No, zone switch failed and they left the water off for the basement. Third time they came...
Glacier Point Services (formerly Stack Company)
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Reviewed in November 2020
Eric completed a garage ceiling repair for us and did a great job! He matched the pattern on the wallboard very nicely. He called to make sure we were satisfied with his job afterwards. I will definitely use WallDocs again.
Walldocs
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Reviewed in September 2020
This a very responsive company & the owner worked directly with my insurance company. The crew was punctual & the repairs were a test of their Excellent skills to say the least. I will definitely call them if I ever need any other work to done.
Rhino Construction, LLC
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Reviewed in November 2016
Extraordinary service. Answered phone on first ring, came same day after hours, diagnosed and repaired our furnace in less than an hour. Made some no-pressure safety and improvement suggestions. All this with a very friendly attitude and fair price. Thank you Randy and Karl. You have a new...
Randy's Heating
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Reviewed in November 2016
They charged my wife while I was out of town part after part claiming it needed the repair and yet regardless the car still had the same problem happening every time she drove. They charged her hundreds for each repair literally raping her of cash. They do not care about customer service only...
University Chevron
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Find Foundation repair specialists in Ester

I. E. J., LLC

5.0(

)

Concrete Foundation - Repair

Serving Ester, AK and surrounding areas

Approved

In business since 2018

Emergency services offered

Small jobs welcome

"I have had several homes repaired over the years by numerous contractors and this is by far the best experience I have ever had!! Would recommend 10/10!!"

+62

Response time11 hrs

Response rate98%

Recommended by93%of homeowners

Request Quote

Rhino Construction, LLC

5.0(

)

Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Ester, AK and surrounding areas

In business since 2005

Free estimates

"very professional. had a number of jobs that needed to be done. am very satisfied by the results of their work. would hire them again when I need other jobs done."

+102

Response time6 days

Recommended by100%of homeowners

Foundation Drainage - Install or Replace

Serving Ester, AK and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Employed all CoViD precautions. I felt very safe having a stranger in my house at this time. So nice having full power back."

Response time1 day

Recommended by66%of homeowners

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Hampton Enterprise LLC

3.7(

)

Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Ester, AK and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"They were good. They were pretty fast and came on time. My overall experience with them has been good."

Recommended by60%of homeowners

Request Quote

Sub Zero Recovery & Removal

New to Angi

Foundation Drainage - Install or Replace

Serving Ester, AK and surrounding areas

In business since 1973

Free estimates

Credit card accepted

Here at Sub Zero Recovery & Removal we are here for all your needs. We have over 30 years of experience and have worked all around the Fairbanks area. We cater to every unique situation. We do both commercial and residential plowing. We also specialize in excavation work and construction clean ups. No matter the job, Sub Zero Recovery & Removal has you covered. Call us today!

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Nifty Solutions LLC

New to Angi

Poured Concrete Wall - Repair

Serving Ester, AK and surrounding areas

In business since 2018

Free estimates

Emergency services offered

We are a multiple service company providing Handyman services and concrete services at competitive rates

Request Quote

Foundation Repair questions, answered by experts

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

Yes, slab foundations can sink just like any other foundation type. Floating slabs are the most prone to differential settlement and foundation sinking because they sit directly on the surface of the earth. Slab foundations that have footings—including slab-on-grade foundations and monolithic slab foundations—get additional support from soil further down and are less likely to sink over time, especially under larger, heavier structures.

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

If your building department catches you or a contractor doing foundation work without proper permits, they will likely put the work on hold until you secure the necessary permits, which can cause delays of days or even weeks. You can also face violation charges for construction without a permit, which can cost hundreds, depending on where you live.

You can strengthen a weak foundation using a few different foundation repair methods, including underpinning, slab jacking, foam jacking, installing carbon fiber support strips, or using a sealant or epoxy crack injection. It’s worth noting that the best way to strengthen your foundation permanently is to fix the underlying issue first and then use a permanent solution to reinforce it. If you’re unsure who to call for foundation repairs, a foundation repair contractor or structural engineer can help find the best solution for your home.

The Ester, AK homeowners’ guide to foundation repairs

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

See all articles

Ginny Bartolone
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Aug 3, 2026Aug 3, 2026
How Much Does Foundation Repair Cost? [2026 Data]
Foundation repair costs can be tricky when you have a large repair on your hands. This guide walks through costs from small cracks to total replacement.
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•
Sep 18, 2026Sep 18, 2026
How Much Does Pier and Beam Foundation Repair Cost? [2026 Data]
Worried about pier and beam foundation repair costs? Get a better understanding of how to budget by learning about the repair methods available to you.
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•
Jul 10, 2026Jul 10, 2026
How Much Does Underpinning a Foundation Cost? [2026 Data]
Unstable or sinking foundations require comprehensive and expensive solutions. Learn about foundation underpinning costs in this guide to set your budget.
Em Norton
•
Apr 6, 2026Apr 6, 2026
Who to Call to Repair Foundation Issues
Foundation issues are critical, so knowing how to manage them is too. Use this guide to learn who to call for foundation repair.
Catherine Hiles
•
Apr 6, 2026Apr 6, 2026
5 Questions to Ask About Concrete Foundation Repair
Minor foundation issues should be repaired before they become a major problem. When hiring a pro, consider these concrete foundation repair questions.
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Jul 31, 2026Jul 31, 2026
What to Know Before Buying a House That Had Previous Foundation Repair
A house’s history of foundation repairs doesn’t always mean you shouldn’t buy it. Learn what to consider when purchasing a house with an unstable past.