Get matched with top basement waterproofing pros in Irvine, CA

Q: What causes a basement to smell musty?

• <div><p>Mold and mildew are the things in basements that actually cause the musty odors, but moisture is the underlying issue that causes mold and mildew growth. Addressing moisture and water problems and then removing materials that are moldy are some of the best ways to get rid of the musty odors. Preventive measures after that&mdash;like installing air fresheners and a dehumidifier&mdash;can help keep musty odors from returning.</p></div>

Q: What happens if water gets under your house?

• <div><p>Standing water under your house can threaten its structural integrity. If water pools in your crawl space, it can damage the foundation and the structure above ground, causing wood rot, mold, and other problems. If you have a concrete foundation, standing water under your house can also make your foundation slabs crack.</p></div>

Q: Why are houses built with crawl spaces?

• <div><p>The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They&rsquo;re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they&rsquo;re at less of a risk of freezing.</p></div>

Q: Is a vapor barrier required in a crawl space?

• <div><p>In nearly all cases, you are required to install a vapor barrier in your crawl space. However, local regulations will change based on the local climate and the crawl space's susceptibility to moisture. Even if a vapor barrier is not legally required, it is often a good idea to <a href="https://www.angi.com/articles/4-steps-protect-your-crawl-space.htm">keep your crawl space dry</a>.</p></div>

Q: How do I make sure my basement walls are waterproof?

• <div><p>To ensure your basement walls are waterproof, it's crucial to address any existing moisture issues before finishing. Inspect for signs of water seepage, such as dampness or discoloration, and repair any leaks or cracks. Install a vapor barrier to prevent moisture from penetrating the walls, and consider waterproofing paints or coatings.</p><p>Proper drainage systems, such as interior or exterior waterproofing, can also be beneficial.</p></div>

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Verified Reviews for Basement Waterproofing pros in Irvine, CA

*The Angi rating for Basement Waterproofing companies in Irvine, CA 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 Irvine, CA 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 January 21, 2025

Reviewed in January 2025
Joseph and his team have done a wonderful job on repairing our floor. They removed our old floor, repaired the cracks that were causing moisture and the floor popping up, put the waterproof seal, and installed the underlayment and the new floor. We went on vacation and left the home to Joseph....
Look Wow Builders
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Reviewed in May 2024
Reach out to Sergio. His designs and quality product is what you want for this big decision. Mine came out beyond expectation and that was dealing with rain storms causing additional care & work. I had drain system, decking, in ground pool , patio & lighting.ð ¯ð ¥
Saher Construction Landscape
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Reviewed in July 2022
Our balcony floor had for some reason been previously patched with roofing material that had failed over the years, and was now allowing rain to leak into the garage below. After pulling off the affected garage drywall, we could see that the balcony supporting timber had been seriously damaged,...
California Home Center, Inc.
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Reviewed in May 2022
We had a new door installed and water got in from the storms. We had some minor mold issues so we called up All Dry. They were professional, easy to work with and very efficient. The job ended up being bigger than we thought because they checked a few walls near by and there were more mold...
All Dry of Orange County
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Reviewed in May 2021
James and his crew are fantastic to work with! After interviewing and getting bids from at least ten other contractors, I hired KDOC Construction to replace our existing deck that was falling apart. It is a large deck (10 x39 ) that spans the entire rear of our house. It is accessible from...
KDOC Construction
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Reviewed in April 2020
I had a potential rat problem in the basement of my house, but since the service I have had no problems. Good service at competitive pricing based on my research.
Termite Terry Pest Control, Inc.
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Reviewed in September 2018
I contracted with this company as one of three companies who bid on the job. The proposal from Mohammed was by far the most complete and professional with a comparable price to one of the others. Although I was in CA during all of the work Mohammed kept in daily contact with me via photos of...
Fine Waterproofing
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Reviewed in January 2018
Eric from Pennington Construction gave me a call right away to set up an appointment regarding the replacement of my sun deck flooring, which had been leaking rain water into my garage. He gave me an estimate immediately, but said it may not be a firm estimate, depending on what damage may be...
Eric Pennington Termite and Construction Inc.
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Reviewed in December 2016
The work and professionalism that this company represented was 100% A plus. The whole job was $3,000 and it was well worth it. They did such a phenomenal job! I am so pleased and would highly recommend Fiber Coat Deck Co. to anyone who is looking for waterproofing their deck(s).
FIBER-COAT DECK CO
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Reviewed in October 2013
We have been proud members of USAA for over 20 years. We would not think of using any other company. If you are looking for margin basement prices however, you may want to look elsewhere . But if you are willing to pay a fair competitive price, and get excellent and reliable service, then USAA...
USAA Bank
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Find Basement waterproofing pros in Irvine

Alpha Structural, Inc.

4.6(

241

)

Serving Irvine, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"Erinn was my initial contact and he gave a very through and fair estimate. We had structural work done to support floor joists and large beams under the garage that needed replacing. Ernesto and his team, Julio, Salvatore and Gilder worked tirelessly to complete the work and were respectful, punctual, informative and good humoured throughout the entire process. I would not hesitate to use them again or recommend them to others. A really great company!!"

Deck Expansion and Slope Failure with Retaining Wall

+323

Response time10 hrs

Response rate96%

20 neighbors recently requested a quote

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Western Rooter & Plumbing

4.8(

170

)

Serving Irvine, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"This is the 5th or 6th time Western Rooter and Plumbing does a plumbing job in my house over past 10 years. They installed softwater tank, replaced waterheater, fixed plumbing, and more. Always excellent"

Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.

Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??

No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.

HALO 5 whole house water filtration system.

+542

Response time7 hrs

Response rate98%

20 neighbors recently requested a quote

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Bill Metzger Plumbing

4.8(

)

Serving Irvine, CA and surrounding areas

Approved

In business since 1961

Emergency services offered

Warranties offered

"Service was excellent from start to finish. They responded fast and got the leak repaired, all within a couple of hours. Reasonably priced and very professional! Highly recommend!"

+40

Response time8 hrs

Recommended by88%of homeowners

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Rapid Rescue Rooter & Plumbing

5.0(

)

Serving Irvine, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"My water main went out on Christmas Eve leaving me without water, Wes offered to come out on Christmas day to make the repairs. I told him we could wait until the next day, he arrived on time, dug up my very rocky soil to get to the water main and made the repairs. The customer service was great and he explained everything to me every step of the way. The cost was also reasonable. I have asked that he return to make an additional repair later this week. He definitely has a repeat customer."

+18

Recommended by90%of homeowners

Serving Irvine, CA and surrounding areas

Approved

In business since 1986

Free estimates

Warranties offered

"EASY TO WORK WITH - GREAT SUPPORT"

+35

Response time1 day

Recommended by75%of homeowners

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RSF Construction Inc.

1.0(

)

Serving Irvine, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

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Palm Construction, Inc.

5.0(

112

)

Serving Irvine, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

Recommended by100%of homeowners

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Palm Construction, Inc.

5.0(

)

Serving Irvine, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"We worked with Ali (sales manager) and Tony (project manager), who took the time to design a project that made sense for our property and our budget, made a number of suggestions and recommendations and were never pushy or tried to "sell" us on something. The crew really went above and beyond to provide top quality workmanship and overall we were in very good hands. Highly recommended!"

Recommended by100%of homeowners

Serving Irvine, CA and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"Wonderful. Don "Rusty" White is a pro!!"

+52

Recommended by100%of homeowners

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Monarch Concrete Coatings

4.8(

)

Serving Irvine, CA and surrounding areas

In business since 1985

Free estimates

Credit card accepted

"It went very well! They were really professional and I had them also repair some weak spots. They were also very accommodating to the tenants."

+19

Recommended by93%of homeowners

Request Quote

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Showing 1-10 of 134

Basement Waterproofing questions, answered by experts

Mold and mildew are the things in basements that actually cause the musty odors, but moisture is the underlying issue that causes mold and mildew growth. Addressing moisture and water problems and then removing materials that are moldy are some of the best ways to get rid of the musty odors. Preventive measures after that—like installing air fresheners and a dehumidifier—can help keep musty odors from returning.

Standing water under your house can threaten its structural integrity. If water pools in your crawl space, it can damage the foundation and the structure above ground, causing wood rot, mold, and other problems. If you have a concrete foundation, standing water under your house can also make your foundation slabs crack.

The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They’re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they’re at less of a risk of freezing.

In nearly all cases, you are required to install a vapor barrier in your crawl space. However, local regulations will change based on the local climate and the crawl space's susceptibility to moisture. Even if a vapor barrier is not legally required, it is often a good idea to keep your crawl space dry.

To ensure your basement walls are waterproof, it's crucial to address any existing moisture issues before finishing. Inspect for signs of water seepage, such as dampness or discoloration, and repair any leaks or cracks. Install a vapor barrier to prevent moisture from penetrating the walls, and consider waterproofing paints or coatings.

Proper drainage systems, such as interior or exterior waterproofing, can also be beneficial.

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