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Q: What are the most common pool leak locations?

• <div><p>Pool leaks most commonly occur at joints or where different materials meet. The most frequent leak spots include:</p><ul><li><p><b>The Pool Skimmer:</b> Where the plastic skimmer meets the pool's liner or shell.</p></li><li><p><b>The Pool Liner:</b> Tears can develop in vinyl liners, especially those between 5 and 20 years old. Leaks also occur around the liner's edge.</p></li><li><p><b>Fittings and Accessories:</b> Areas around return lines, the main drain, and pool lights are common culprits.</p></li><li><p><b>Pool Equipment:</b> The pump, filter, and filter housing can also leak.</p></li></ul><p>While leaks in underground pipes are less common, they can be costly to fix. It's usually best to check the more common spots before investigating the plumbing system.</p></div>

Q: What dissolves algae in a pool?

• <div><p>The best way to dissolve algae is to use pool shock. The shock increases the free chlorine levels in your pool, which in turn kills bacteria, microorganisms, and algae. You can opt for granulated shock that you mix with water or a premixed liquid shock.</p><p>Keep in mind that using pool shock is just one of the steps you need to take to get rid of algae from your pool. Unless you also brush, vacuum, and clean the filter, your algae problem may return.</p></div>

Q: Is it okay to fill a pool overnight?

• <div><p>You should avoid filling your pool overnight&mdash;just as a precaution. You&rsquo;ll want someone around to check on the progress. If your hose springs a leak or you overfill your pool, you could end up with some costly water damage. At worst, you could flood your home&rsquo;s foundation. For this reason, ensure someone is home and awake, even if your pool takes a couple of days to fill.</p></div>

Q: Are fiberglass pools cheaper than concrete pools?

• <div><p>When looking into <a href="https://www.angi.com/articles/are-fiberglass-pools-better-concrete.htm">fiberglass vs. concrete pools</a>, you will notice a big price difference. A fiberglass pool costs $15,000 to $75,000, whereas a concrete pool costs $35,000 to $100,000. While concrete pools are customizable, fiberglass is faster to install and requires less maintenance. Additionally, you can expect to pay $25,000 to maintain a concrete pool over a ten-year span. On the other hand, a fiberglass pool only requires basic maintenance like testing water levels and cleaning.</p></div>

Q: Can you DIY a gunite pool?

• <div><p>You cannot DIY a gunite pool&mdash;unless, of course, you&rsquo;re a homeowner who happens to also be a professional pool installer. And even pros need to have experience with gunite pools, in particular, before installing one. Only a skilled gunite pool technician can install this type of pool&mdash;it&rsquo;s not a project you can do yourself.</p></div>

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Verified Reviews for Above Ground Pool Installation pros in O Fallon, IL

*The Angi rating for Above Ground Pool Installation companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Above Ground Pool Installation needs.

*The HomeAdvisor rating for Above Ground Pool Installation companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Above Ground Pool Installation needs.

Last update on October 15, 2026

Find Above ground pool installation pros in O Fallon

Ventura landscaping

4.9(

)

Swimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

In business since 2019

Free estimates

Emergency services offered

Complete landscaping services, hardscaping and pavers and landscape lighting, we provide top quality service and are flexible on services.\nWe have the experience and dedication to bring your dreams to reality! Specializing in Landscaping Services, we guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule a free estimate today!

+34

Recommended by100%of homeowners

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Two Men And A Spa Dolly

4.1(

)

Above Ground Swimming Pool or Accessories - Repair or ServiceSwimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

In business since 2003

Credit card accepted

Two Men & a Spa Dolly (TMSD) is a service oriented company performing Spa sales and services (including maintenance, repair, installation, delivery, moves, storage, and more); In-ground swimming pool services; sales and installation of outdoor fire-pit and custom outdoor kitchens; sales of pool and spa chemical and accessories. Please stop by to speak to one of our professionals for a personal bid and we will advise you on the proper installation and maintenance. We take pride in delivering, moving or installing your product as if it were our own.\n\nWe Service all Spas and Hot Tubs.\n\nFrom delivering, to relocating your outdoor recreational investment, we can accommodate your individual needs. No job has ever been too large or too small for us to achieve success and customer satisfaction.\n\n\nWe have over 30000 deliveries, moves, disposals and installations to date. We are fully insured and have numerous credit and business references.\n\nWe currently are serving the St. Louis, MO. Metropolitan area, including parts of Illinois and Kansas. If you are an individual or a dealer of outdoor amenities and would be interested in our services and pricing please visit our "Contact Us" or "Request for Service" page to setup an initial consultation.

Recommended by91%of homeowners

Swimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

Credit card accepted

HVAC, general repairs, maintenance, Lawn care, mold clean-up and Remodeling, Debris Removal, Final Cleanings plus more. We have been in business since 1982.

+25

Recommended by100%of homeowners

Above Ground Swimming Pool or Accessories - Repair or Service

Serving O Fallon, IL and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"Joseph was friendly and professional. Went above and beyond to make sure I was satisfied"

Recommended by81%of homeowners

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St. Louis Custom Pool Liner & Service

5.0(

)

Above Ground Swimming Pool or Accessories - Repair or ServiceSwimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

In business since 2020

Free estimates

Emergency services offered

We specialize in custom vinyl liner replacement for swimming pools. We are owner operated with 30 years of experience in the field. Our goal is to quickly transform your problem pool back into your backyard oasis again. Let our staff quickly, timely and professionally make your backyard enjoyable again!

Recommended by100%of homeowners

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American Home Shield – Home Warranty

3.5(

5,688

)

Above Ground Swimming Pool or Accessories - Repair or Service

Serving O Fallon, IL and surrounding areas

In business since 1971

Credit card accepted

"wen't great the repair person wen't above and beyond things and showed my wife some things to help us ."

Recommended by65%of homeowners

Swimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

Free estimates

Emergency services offered

Warranties offered

We specialize in all phases of landscaping, hardscaping, above ground pools, semi-inground pools, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

Response time2 days

3 neighbors recently requested a quote

Recommended by100%of homeowners

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Wylder Pools

New to Angi

Above Ground Swimming Pool or Accessories - Repair or ServiceSwimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

Free estimates

Warranties offered

Small jobs welcome

My name is Jim Montgomery and I have worked in and been around the pool business for over 25 years. I am local to the Collinsville IL area where my family and I have lived all of ours lives. We are honest, hard working, and would love the opportunity to earn your business.

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Enterprise Contracting Inc

3.5(

)

Swimming Pool - Above Ground, Build or Install - Have MaterialsSwimming Pool - Above Ground, Build or Install - Need Materials

Serving O Fallon, IL and surrounding areas

In business since 1994

Free estimates

Emergency services offered

"Excellent! Kirk, the General Manager was also the sales person. He was helpful, honest, forthright, personable, prompt, dependable, and reachable. His crew were professional and hard working. Their craftsmanship was excellent. They got my house and garage roof done in one day! As well as installed the gutter guards. They were near the cheapest bid but were not the cheapest but, I hired him/them because he had all the positive qualities listed above. I would recommend them, as well as hire them again!"

Recommended by72%of homeowners

Above Ground Swimming Pool or Accessories - Repair or Service

Serving O Fallon, IL and surrounding areas

In business since 2000

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

Response time1 day

Recommended by18%of homeowners

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Showing 1-10 of 14

Install Above Ground Pools questions, answered by experts

Pool leaks most commonly occur at joints or where different materials meet. The most frequent leak spots include:

The Pool Skimmer: Where the plastic skimmer meets the pool's liner or shell.
The Pool Liner: Tears can develop in vinyl liners, especially those between 5 and 20 years old. Leaks also occur around the liner's edge.
Fittings and Accessories: Areas around return lines, the main drain, and pool lights are common culprits.
Pool Equipment: The pump, filter, and filter housing can also leak.

While leaks in underground pipes are less common, they can be costly to fix. It's usually best to check the more common spots before investigating the plumbing system.

The best way to dissolve algae is to use pool shock. The shock increases the free chlorine levels in your pool, which in turn kills bacteria, microorganisms, and algae. You can opt for granulated shock that you mix with water or a premixed liquid shock.

Keep in mind that using pool shock is just one of the steps you need to take to get rid of algae from your pool. Unless you also brush, vacuum, and clean the filter, your algae problem may return.

You should avoid filling your pool overnight—just as a precaution. You’ll want someone around to check on the progress. If your hose springs a leak or you overfill your pool, you could end up with some costly water damage. At worst, you could flood your home’s foundation. For this reason, ensure someone is home and awake, even if your pool takes a couple of days to fill.

When looking into fiberglass vs. concrete pools, you will notice a big price difference. A fiberglass pool costs $15,000 to $75,000, whereas a concrete pool costs $35,000 to $100,000. While concrete pools are customizable, fiberglass is faster to install and requires less maintenance. Additionally, you can expect to pay $25,000 to maintain a concrete pool over a ten-year span. On the other hand, a fiberglass pool only requires basic maintenance like testing water levels and cleaning.

You cannot DIY a gunite pool—unless, of course, you’re a homeowner who happens to also be a professional pool installer. And even pros need to have experience with gunite pools, in particular, before installing one. Only a skilled gunite pool technician can install this type of pool—it’s not a project you can do yourself.

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