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Best basement waterproofing pros near Descanso, CA

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

RSF Construction Inc.
1.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Descanso, 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!

Palm Construction, Inc.
5.0(
112
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Descanso, 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
Palm Construction, Inc.
5.0(
90
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Descanso, 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
Palm Construction, Inc.
4.6(
131
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Descanso, CA and surrounding areas

In business since 2016

"My old roof was ready for a replacement and I contacted several companies. Palm Construction gave me competitive price and they were available in very acceptable time and that was very important to me. Mike and his team did accurate and high quality job, there were no issues and they finished within their promised time. My new roof looks fantastic, I am completely satisfied with final product and overall experience to work with Palm Construction is excellent! I strongly recommend them!"
Response time3 hrs
Response rate97%
Recommended by91%of homeowners
Avatar for Elite Coatings - Waterproofing, Inc.
Elite Coatings - Waterproofing, Inc.
4.8(
4
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Descanso, CA and surrounding areas

In business since 2014

Free estimates

Warranties offered

"Birlly was a pleasure to work with beginning with the estimate, our meetings at the job site, and the actual sealant installation. He was very professional and knowledgeable. I can highly recommend Birlly and his company."
Below Grade
Below Grade
Below Grade
Below Grade
Balcony Deck Coatings

+2

Response time7 hrs
Recommended by75%of homeowners
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Basement Waterproofing FAQs, answered by experts

Having a trusted crawl space contractor is the key to great encapsulation. If you're not sure how to hire a crawl space pro, begin by asking your neighbors for referrals. Homes in your neighborhood will often have a similar foundation to your house, and personal recommendations are one of the best ways to find a contractor. Additionally, double-check that the contractor has experience with encapsulation as well as proof of their license and insurance.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation. 

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.

A plastic vapor barrier should completely cover your basement to prevent water from penetrating through the walls. This typically goes before installing insulation to prevent moisture from building up and becoming trapped on the inside of your insulation, where it can collect and lead to mold damage. Installing insulation after the vapor barrier allows for any moisture to exit the walls for better ventilation.

The first step to preventing foundation cracks is to repair any current ones. When one crack forms, it becomes more likely that a second crack will follow. A few other tips include performing regular foundation checks, cleaning spouts and gutters, and installing exterior drains if needed. For those living in a hot and arid area, you should water your foundation every other day.

The Descanso, CA homeowners’ guide to basement waterproofing services

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