Get matched with top basement waterproofing pros in Covina, 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: Is a walkout basement below grade?

• <div><p>A walkout basement is considered to be partially below grade because at least one wall is entirely exposed. In some cases and in specific municipalities, inspectors and appraisers will still count walkout basements as below grade, which means the space can&rsquo;t serve as living space or be rented out. If you intend on using the area as living space or a separate apartment, you should check with your local building department to make sure it&rsquo;s legal to do so.</p></div>

Q: How can I prevent future water accumulation issues?

• <div><p>Preventing water accumulation involves regular inspections, maintaining effective drainage systems, ensuring proper roof maintenance, and taking preventive measures against heavy rainfall or floods.</p></div>

Q: What do you put around the bottom of your house?

• <div><p>If you decide to fill the space around your home&rsquo;s foundation with landscaping materials, it&rsquo;s important to consider the aesthetic as well as technical factors like drainage and protection from pests and the elements. Materials such as gravel, rubber mulch, concrete, and brick masonry are all good options.</p></div>

Q: Does insurance cover water coming in the basement?

• <div><p>In most cases, standard homeowners <a href="https://www.angi.com/articles/will-homeowners-insurance-cover-water-damage.htm">insurance policies cover water damage</a> from sudden, accidental damage, like burst pipes and leaking appliances. However, water damage caused by flooding, groundwater seepage, or heavy rain is likely to be excluded from coverage. Check your policy to be sure, as some plans include opt-in flood insurance coverage. Certain companies also allow homeowners to add an optional water backup endorsement to a policy. </p></div>

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Verified Reviews for Basement Waterproofing pros in Covina, CA

*The Angi rating for Basement Waterproofing companies in Covina, 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 Covina, 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 22, 2026

Reviewed in October 2025
I hired Green Laser Roofing Company to fix a roof leak and apply a waterproof coating. The team was professional, friendly, and punctual throughout the entire project. They explained every step clearly and made sure the work was done to a high standard.
Green Ladder Roofing Company
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Reviewed in September 2025
We had a situation with the time frame but we were able to get it completed. I am happy with the service.
Baldwin Builders
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Reviewed in May 2023
Very friendly and prompt. Very reasonable prices.
JEC Handyman
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Reviewed in October 2022
Andrew is a professional. He arrives on time, does a great job, and his prices are very reasonable. When I need hot mop waterproofing done, I always call Andrew at We Tarred It. I'm a licensed contractor that specializes in bathroom and kitchen remodeling and I'm always confident in Andrew's...
We Tarred It! Hot Mopped Shower Pans
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Reviewed in September 2022
Rocky was a pleasure to work with. He went the extra miles to visit several times before his job actually had to start just to make sure the contractor was doing their job getting everything ready for Rocky to come in with his waterproofing team.
Syntech Roofing and Waterproofing
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Reviewed in August 2022
Whole house completely transformed, changed my outdated floors to new vinyl waterproof flooring, combined 2 bedrooms to make a beautiful master suite, remodeled my backyard/pool- they can do everything it seems like!! Loved the job
Ivory Home Builders
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Reviewed in November 2021
Christian and company added a backsplash to our existing kitchen, built an outdoor deck for our basement and changed some indoor and outdoor light fixtures. The work was of excellent quality and the whole team was wonderful. Overall expierience and craftmanship was outstanding.
Lux Renovations LLC
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Reviewed in April 2021
He is a good worker. He does good work.
Nelson Construction
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Reviewed in August 2020
Luis and his team did a really good job on waterproofing the deck and also installed the rain gutter. They came out the next day once a price is agreed upon.
L & F Remodeling, Inc.
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Reviewed in January 2015
It took them about a month to get started. It was very, very hot, and they disconnected the air conditioner, then we're not able to reconnect it. I had to buy a whole new central air unit. They were hired to reinforce basement walls that cracked due to frost heave. The walls cracked again the...
Adelios Contracting Co
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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.

A walkout basement is considered to be partially below grade because at least one wall is entirely exposed. In some cases and in specific municipalities, inspectors and appraisers will still count walkout basements as below grade, which means the space can’t serve as living space or be rented out. If you intend on using the area as living space or a separate apartment, you should check with your local building department to make sure it’s legal to do so.

Preventing water accumulation involves regular inspections, maintaining effective drainage systems, ensuring proper roof maintenance, and taking preventive measures against heavy rainfall or floods.

If you decide to fill the space around your home’s foundation with landscaping materials, it’s important to consider the aesthetic as well as technical factors like drainage and protection from pests and the elements. Materials such as gravel, rubber mulch, concrete, and brick masonry are all good options.

In most cases, standard homeowners insurance policies cover water damage from sudden, accidental damage, like burst pipes and leaking appliances. However, water damage caused by flooding, groundwater seepage, or heavy rain is likely to be excluded from coverage. Check your policy to be sure, as some plans include opt-in flood insurance coverage. Certain companies also allow homeowners to add an optional water backup endorsement to a policy.

The Covina, CA 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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