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Q: What happens if you don't backfill a retaining wall?

• <div><p>If you don&rsquo;t backfill a retaining wall&mdash;either at all or adequately enough&mdash;the wall won&rsquo;t drain well, and water will be able to pass through it. Poor drainage will lead to a warped wall or a buildup of hydrostatic pressure, which can eventually collapse your retaining wall. If you have particularly sloped land, consult a structural engineer to ensure your <a href="https://www.angi.com/articles/hardscape-features-bring-value-landscape.htm">hardscaping is adding value to your home</a>.</p></div>

Q: How long does wall installation take?

• <div><p>Installation typically takes 1-2 weeks, depending on the wall&rsquo;s size and site conditions.</p></div>

Q: Does a 2-foot retaining wall need drainage?

• <div><p>Each design is different, so we can&rsquo;t say definitively if you&rsquo;ll need a dedicated drainage system in place for a two-foot retaining wall. However, you can likely skip the drainage, as this project is typically served for walls that are 4 feet tall or more. Even with a relatively low wall, consider drainage if you are building on top of clay or poor-draining soil types or if there are buried water sources nearby, like a well used for other <a href="https://www.angi.com/articles/beginning-home-gardening-guide.htm">outdoor garden projects</a>.</p></div>

Q: Why do retaining walls lean?

• <div><p>Failure to compact the soil during construction is the most common cause of leaning retaining walls. In addition, poor drainage can lead to excessive water pressure behind a retaining wall, pushing against it until it begins to move forward away from the soil it is holding back.</p></div>

Q: Are railroad ties good for retaining walls?

• <div><p>Railroad ties can be good for retaining walls, but it depends on the area. They have a desirable rustic look and are durable. The problem is they&rsquo;re treated with creosote, a preservative the EPA says poses a risk to humans and wildlife. Over time, the preservative seeps out of the wood and into the ground. Many areas have banned the use of creosote-treated wood on residential properties. If your area does allow it, never use railroad ties near an edible garden or drinking water source. Instead, use wood that&rsquo;s treated with an EPA-approved preservative or a wood-alternative composite material.</p></div>

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Verified Reviews for Retaining Wall Installation pros in Cornish, ME

*The Angi rating for Retaining Wall Installation companies in Cornish, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Retaining Wall Installation needs.

*The HomeAdvisor rating for Retaining Wall Installation companies in Cornish, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Retaining Wall Installation needs.

Last update on May 16, 2026

Reviewed in May 2026
Byron and his team are very professional. The retaining wall they build came out amazing. I Would give 10 starts if I could!
BTB Hardscaping & Excavation
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Reviewed in November 2025
We had them add stud walls and paneling to our basement walls and then put up a ceiling. Very nice work, done promptly, professionally and no mess left behind!
Mighty Tidy
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Reviewed in September 2024
LF Grass did a fantastic job installing laminate flooring at my cabin in Sebago. They were very proficient with the expertise of the installation and displayed a very professional attitude. They also coordinated and worked in conjunction with an additional plumbing subcontractor that was...
L.F. GRASS CUSTOM TILE INSTALLATIONS
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Reviewed in September 2024
Had a hole in the wall that needed to be repaired. Quality of work was top notch! Showed up when he said he would and had it all fixed up in no time!
MTL Renovations
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Reviewed in April 2024
Excellent shower and install. Excellent service.
Clear Choice Home Improvements, LLC
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Reviewed in December 2022
The installers that did the job were very nice and efficient and did a great job cleaning up
Clear Choice Home Improvements, LLC
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Reviewed in January 2022
The installer stayed 12 hours to make sure the job was done in 1 day. it was much appreciated
Clear Choice Home Improvements, LLC
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Reviewed in May 2021
Great team of installers. Went over operation and efficiency tips and they even vacuumed the area before they left! Highly recommend !
LaPlante Electric, Inc.
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Find Retaining wall installation pros in Cornish

M & L LANDSCAPING & CONSTRUCTION, LLC

4.9(

)

Serving Cornish, ME and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Javier and his assistant did a great job on my wall. Already referred him to my mother in law. Thanks Javier"

5 neighbors recently requested a quote

Recommended by89%of homeowners

Serving Cornish, ME and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"These guys did an amazing job on my beautiful block wall/patio. They were quick, friendly, efficient, and did quality work for a fair price! Very satisfied, would highly recommend."

+11

7 neighbors recently requested a quote

Recommended by58%of homeowners

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BTB Hardscaping & Excavation

5.0(

)

Serving Cornish, ME and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Byron and his team are very professional. The retaining wall they build came out amazing. I Would give 10 starts if I could!"

19 neighbors recently requested a quote

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Wicked Hardscapes LLC

5.0(

)

Serving Cornish, ME and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Wicked hardscapes did a great job on our patio. We are very satisfied with the work and quality. They communicated well with everything and got the job done in a timely manner."

+31

Response time10 hrs

Response rate89%

Serving Cornish, ME and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"He repaired my fences, put a lock on a fence and cemented a post in. He also installed a light fixture. I had all the products.
The lock? I can still open the fence. For handyman services, he does individual jobs quickly and is personable.
People are safe with these people."

+32

Recommended by72%of homeowners

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Masons Property services

4.8(

)

Serving Cornish, ME and surrounding areas

Free estimates

"Mason does very thorough and good work. He is a hard worker, young and enthusiastic. He is still developing his skill set, but shows a sense of maturity beyond his years. I would hire him again."

Recommended by100%of homeowners

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Black Majic Sealcoating

4.6(

)

Serving Cornish, ME and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"Excellent customer service. Great job done on driveway at a fair price. Definitely recommend."

Recommended by100%of homeowners

Serving Cornish, ME and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"
Said they would do clean up, left a lot of debris around the house

Said they could do shingles siding but really didn't know what they were doing - when I saw the job and asked them to redo much of it because it was not level or inline with the rest of the house.

Thought they would make it good, but rushed through fixing the issues - then never heard from them again.

"

Recommended by66%of homeowners

Serving Cornish, ME and surrounding areas

In business since 2020

Free estimates

"He was most polite and efficient."

+13

Response time3 days

Recommended by100%of homeowners

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Bennett Family Carpentry& Remodeling

4.0(

)

Serving Cornish, ME and surrounding areas

In business since 1989

Free estimates

Warranties offered

"The work was top notch and the attention to detail was outstanding. Very pleasant to deal with and went above and beyond all expectations!"

+19

Recommended by100%of homeowners

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Showing 1-10 of 39

Retaining Wall Installers questions, answered by experts

If you don’t backfill a retaining wall—either at all or adequately enough—the wall won’t drain well, and water will be able to pass through it. Poor drainage will lead to a warped wall or a buildup of hydrostatic pressure, which can eventually collapse your retaining wall. If you have particularly sloped land, consult a structural engineer to ensure your hardscaping is adding value to your home.

Installation typically takes 1-2 weeks, depending on the wall’s size and site conditions.

Each design is different, so we can’t say definitively if you’ll need a dedicated drainage system in place for a two-foot retaining wall. However, you can likely skip the drainage, as this project is typically served for walls that are 4 feet tall or more. Even with a relatively low wall, consider drainage if you are building on top of clay or poor-draining soil types or if there are buried water sources nearby, like a well used for other outdoor garden projects.

Failure to compact the soil during construction is the most common cause of leaning retaining walls. In addition, poor drainage can lead to excessive water pressure behind a retaining wall, pushing against it until it begins to move forward away from the soil it is holding back.

Railroad ties can be good for retaining walls, but it depends on the area. They have a desirable rustic look and are durable. The problem is they’re treated with creosote, a preservative the EPA says poses a risk to humans and wildlife. Over time, the preservative seeps out of the wood and into the ground. Many areas have banned the use of creosote-treated wood on residential properties. If your area does allow it, never use railroad ties near an edible garden or drinking water source. Instead, use wood that’s treated with an EPA-approved preservative or a wood-alternative composite material.

The Cornish, ME homeowners’ guide to retaining wall installation services

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

See all articles

Haley Nothstein
•
May 30, 2026May 30, 2026
How Much Does a Retaining Wall Cost to Build? [2026 Data]
Kick erosion to the curb with an eye-catching retaining wall. Retaining wall costs vary based on the material, but this guide will help you budget.
Kyle Schurman
•
Jul 9, 2026Jul 9, 2026
How Much Do Retaining Wall Repairs Cost? [2026 Data]
Retaining wall repair cost can vary widely based on the age and condition of the wall being restored. Learn why finding the right pro is important for getting the job done.
Angi
•
May 30, 2026May 30, 2026
How Much Does a Concrete Retaining Wall Cost? [2026 Data]
Find out how much a concrete retaining wall costs. Get average prices, cost factors, and expert tips to budget and save on your installation.
Christopher Murray
•
Jul 9, 2026Jul 9, 2026
Who to Hire to Build a Retaining Wall: A Complete Guide
While it’s possible to DIY build a retaining wall, several pros have advanced knowledge of hardscaping and building. Learn who to hire to build a retaining wall.
Ginny Bartolone
•
Jul 9, 2026Jul 9, 2026
20 Retaining Wall Ideas for Your Yard
There is no one-size-fits-all retaining wall for your yard. In fact, the options are endless. Check out 20 retaining wall ideas to upgrade your hardscape.
Dan Simms
•
May 3, 2026May 3, 2026
6 Retaining Wall Questions to Ask Before Hiring a Professional
Replacing a retaining wall or installing a new one after grading? Here are some retaining wall questions you should be prepared to answer when hiring a pro.