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Verified Reviews for Basement Waterproofing pros in Jefferson, CO

*The Angi rating for Basement Waterproofing companies in Jefferson, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Jefferson, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on December 09, 2024

Top-Rated Basement waterproofing pros in Jefferson - Updated Nov 2026

Avatar for Groundworks
Groundworks
4.1(
274
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Jefferson, CO and surrounding areas

Approved (Corporate)

In business since 2021

Free estimates

Warranties offered

"This company is top notch with very professional workers and courteous reps to give you an estimate. This was by far the BEST job for the money. It was 6 times LESS than Applewood. Yes, I'm not kidding. You will not be disappoint!! Thank You Complete Basement Systems!!"
Protect Your Basement Before & After
Correct Your Wet Basement
Protect Your Basement
Waterproof Your Basement
Protect Your Concrete Before & After

+16

87 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for Thrasher, Inc.
Thrasher, Inc.
4.1(
182
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Jefferson, CO and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Thrasher has been awesome to work with on my basement project."
Basement Waterproofing Before and After
Concrete Repair Before and After
Thrasher Services
Thrasher Services
Thrasher Services

+12

Response time2 days
912 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for Rock solid Foundations LLC
Rock solid Foundations LLC
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Jefferson, CO and surrounding areas

Approved

In business since 2023

Warranties offered

Credit card accepted

"My husband noticed cracks in the ceiling and doors were starting to stick. We called RockSolid and they gave our homes foundation a fix that I am thoroughly satisfied with, the price isnt bad, and these guys genuinely care about their customers and the work that they do. Thank you to Michael and the team at RockSolid Foundations. I highly recommend them to anyone!"
Digging holes
Concrete
Working together
Michael Wirgau
Eddie Mendoza

+3

Response time10 hrs
Response rate100%
8 neighbors recently requested a quote
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Avatar for Kona Construction LLC
Kona Construction LLC
1.0(
2
)
Basement Drainage Channels - Install

Serving Jefferson, CO and surrounding areas

Approved

Free estimates

Small jobs welcome

Offers commercial services

We are small locally owned company looking to do residential and commercial water, sewer, and excavation services. My phone number is (719) 696-0317 give me a call for a quote or bid on your next project!

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Avatar for Advantage Sewer Drain Plumbing
Advantage Sewer Drain Plumbing
4.7(
119
)
Basement Drainage Channels - Install

Serving Jefferson, CO and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

"Great service, great work done. I would hire these guys again for sewer cleaning and scoping! Thank You!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Recommended by92%of homeowners
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Avatar for Upslope Co.
Upslope Co.
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Jefferson, CO and surrounding areas

In business since 2021

Free estimates

Emergency services offered

"They were able to use all our existing material and make our long driveway passable again.. Smooth as butter. Great job."
Response time12 hrs
Response rate98%
Recommended by100%of homeowners
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Ybarra Professional Builders
4.3(
41
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Jefferson, CO and surrounding areas

In business since 1977

Free estimates

Credit card accepted

With over 40 years of experience, Ybarra Professional Builders, is a leader in the industry. Specializing in additions and remodels, we guarantee our work, and stand by our promise, to provide homeowners with quality work in Riverside county. Call today to book an appointment!

Recommended by20%of homeowners
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Avatar for Flawless Construction
Flawless Construction
5.0(
5
)
Basement Drainage Channels - Install

Serving Jefferson, CO and surrounding areas

In business since 2016

Emergency services offered

"It was good. My friend was really happy about the concrete pour. They did a great work. They cleaned up after. Price was fair. It was fast."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+31

Recommended by100%of homeowners
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Avatar for High Altitude Hauling, Inc.
High Altitude Hauling, Inc.
5.0(
6
)
Basement Drainage Channels - Install

Serving Jefferson, CO and surrounding areas

In business since 2006

Free estimates

Offers commercial services

"Exceptional work done on parking lots, driveways and new picnic nice area! Very responsive and communicates regularly. Competitive pricing and finishes projects on time. Weve used them for several projects over the years and recommend them regularly. Thanks for the consistent high quality work!"
My jobs
My jobs
My jobs
My jobs
My jobs

+19

Response time2 days
Response rate93%
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Showing 1-10 of 24
Basement Waterproofing FAQs, answered by experts

If you notice standing water under the deck after rainstorms, you may need a drainage system to efficiently move this water. You do not want standing water to rest against your foundation or against support posts for the deck, as this could cause significant structural problems over time. Make sure the area has proper grading, too.

In most climates, contractors recommend closing your crawl space vents in winter. Keeping them shut protects your crawl space from freezing temperatures, pests, and cool breezes that can lead to chilly floors in your home. However, it's often best to speak with a local crawl space team about your specific design and its relationship to the winter season.

Living in a finished basement is acceptable, but only if the space has the proper points of egress and includes smoke and carbon monoxide (CO) detectors to ensure the safety of the occupants. A good way to ensure your finished basement is suitable for use as living space is to get the basement finishing project properly permitted.

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

The process might take a few days to a week, depending on the method chosen, area size, and weather conditions. Some solutions, like simple interior sealants, may require less time.

The Jefferson, CO homeowners’ guide to basement waterproofing services

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

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