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    Verified foundation drain installation services reviews

Top-Rated Foundation drain installation pros in Thornton - Updated Nov 2026

Drain Unlimited, LLC
4.6(
31
)
Sump Pump or Interior Foundation Drains - Install

Serving Thornton, CO and surrounding areas

Approved

In business since 2001

Emergency services offered

Warranties offered

Welcome to Drain Unlimited, LLC. From toilets to faucets and waterheaters to all phase of draining system, you can expect Drain Unlimited, LLC, to provide fast economical quality service for your business or home. Drain Unlimited, LLC, is simply the best Denver plumbing company. When homeowners and businesses in Denver area need plumbing work, they can rely on Drain Unlimited, LLC, to provide the highest quality and quickest service in the area.

Response time7 hrs
Recommended by93%of homeowners
Avatar for Flatirons Plumbing, Inc.
Flatirons Plumbing, Inc.
4.7(
265
)
Sump Pump or Interior Foundation Drains - Install

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"We had a sewer line leak, a sump pump replacement, an outdoor faucet replacement, a tub drain repair and expansion sleeves installed on vertical sewer pipes. Anthony was very knowledgable and helpful. Everything fixed and I would hire Flatirons again.."
Our Flatirons Plumbing Team!
We promise to listen to our customers
The Flatirons Plumbing Team
Response time5 hrs
5 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Liftech Corporation
Liftech Corporation
4.7(
175
)
Foundation Drainage - Install or Replace

Serving Thornton, CO and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"Excellent customer service. They were able to fix our basement slab quickly. The quote was reasonable. The tech came out and walked us through the process. Highly recommended!"
Driveway
Helical Pier insatll
Driveway
Helical pier Install
Before

+23

Response time5 hrs
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Rooter Guy, LLC
Rooter Guy, LLC
4.6(
3,131
)
Sump Pump or Interior Foundation Drains - Install

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"Had them replace a drain pipe in my foundation. They were timely and efficient. Price was very good as I have been through this nightmare before. Really appreciated Keith and Nico! When Keith arrived, I instantly knew I had the right guy advising me on this. Nico did a great job doing the job. Thank you both."
sewer cleaning
1277 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Affordable Radon Solutions, LLC
Affordable Radon Solutions, LLC
4.7(
374
)
Sump Pump or Interior Foundation Drains - Install

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"These guys came very unpreparedly... they did not bring their own ladders or flashlights. I had to provide them for them. They also cut 3 different holes in my ceiling before deciding to go through the foundation, they then charged me extra for them having to cut so much.... but it did not reflect on the receipt...when they were done they did a horrible job patching and left the plaster a massive mess. Would only recommend if you are selling per the buyer request to put in and you do not care how it looks."
 custom fit pipe-garage install
 Blending isn't a problem
 suction point T intersection into crawl space
Garage Attic Install
 close up view of radon mitigation fan

+25

Response time2 days
Recommended by95%of homeowners
Avatar for Legacy Concrete Inc
Legacy Concrete Inc
4.5(
352
)
Concrete Foundation - Install

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"Awesome job! After being harassed by the HOA for a cracked driveway due to the builder cutting corners and not knowing how to pour a concrete driveway, we decided it was time to have the thing ripped out and replaced and done right. We also opted to install a new walkway on the side of the garage. When I was “shopping around” for concrete bids, I got a varied level of responses from different companies. Most were vague about what they were going to do but Robert was very clear about what was included in his estimate down to the thickness of the slab to the PSI of the concrete mix so there were no unknowns about what we were getting. Full tear out and haul off, road base, compaction, rebar for structural reinforcement, sealant — and he was the only one who suggested (preferred) installing a channel drain in the new side walkway instead of burying the downspout underneath. His attention to detail and knowledge put him at the top of my list, no doubt. Jacob and the crew were all extremely polite and friendly while they were on site doing the job. I don’t know if it’s intentional or not, but each of them made it a point to look me in the eye and greet me. Watching them work, it was clear that they are professionals and know what they’re doing. Most people might take pouring laying concrete for granted, but when you watch professionals do it, it’s clear that it’s an art form. When Rob Sr. came out to seal everything, he too was incredibly friendly and professional. This is a quality run organization with top notch staff who do an incredible job. My only regret is that this driveway is so good, it will likely outlast me and I might never need to hire these guys again, so you definitely should!"
Concrete - Pouring & Repair Project
Concrete - Pouring & Repair Project
Concrete - Pouring & Repair Project
Concrete - Pouring & Repair Project
Concrete - Pouring & Repair Project

+6

1 neighbors recently requested a quote
Recommended by93%of homeowners
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Foundation Drain Installation FAQs, answered by experts

Ideally, your sump pump discharge should run down a natural downhill slope 10 to 20 feet away from your home’s foundation. However, if your property is naturally flat, that might not be an option. Instead, you may be able to discharge it into a neighborhood storm drain or a nearby creek or pond. If that’s not possible, consider burying it underground.

Test regularly, clean the pump, and inspect the discharge line to ensure efficient operation.

Statistics show that 98% of basements will experience some form of water damage over time. However, that doesn’t mean all basements will experience severe flooding. The best way to prevent a water-damaged basement is to keep up with home maintenance and have proper drainage installed outside your home to direct water away from the foundation. You can also consider building a flood wall around the house if you live in a flood-prone area.

No, homeowners insurance policies do not typically cover sump pump installation. However, some companies may offer incentives in the form of discounts or reduced premiums if homeowners install sump pumps. Insurance companies do this because sump pumps can reduce water damage claims. You may also be able to obtain enhanced water-backup coverage after installing a sump pump.

A sewage ejector pump is necessary if you have any plumbing fixtures, such as a bathroom, laundry room, or sink, located below the level of your home's main sewer line. Standard plumbing relies on gravity to move wastewater and solid waste to the municipal sewer or septic tank. However, for fixtures located below grade (e.g., in a basement), gravity is not sufficient.

The purpose of a sewage ejector pump is to actively pump this wastewater and solid waste upward into the main sewer line. Without an ejector pump in this situation, wastewater would have no way to exit and would eventually back up, causing a sewage overflow or flooding in your basement. If all of your home's plumbing is on the main floor or higher, gravity can handle the drainage, and an ejector pump is not needed.

The Thornton, CO homeowners’ guide to foundation drain installation services

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