Top-rated basement waterproofing pros.

Best basement waterproofing pros near Joshua Tree, CA

Enter your zip and get matched with up to 5 pros

Top-Rated Basement waterproofing pros in Joshua Tree - Updated Nov 2026

21st Century Waterproofing
4.8(
30
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Joshua Tree, CA and surrounding areas

Approved

In business since 1992

Free estimates

Offers commercial services

At 21st Century Painting and Waterproofing, we offer the best service for your waterproofing needs. We have been in business for over 20 years and have the skill and expertise you need. We look forward to working with you. Give us a call today!

Recommended by92%of homeowners
Avatar for Western Pacific Roofing Corp
Western Pacific Roofing Corp
4.8(
24
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Joshua Tree, CA and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"Excellent! I could not have asked for a better crew. JT, Shaun, Pedro and Kayla were my direct contacts and all were very professional. Western Pacific Roofing came to the rescue just before this last big rain. They were not prepared to repair my roof upon first observation, however, they were able to secure the exposed area so as not to allow further damage from the impending rain storms. We survived the rain, they returned the next business day after the rains. Roof is repaired and I’m completely satisfied with my overall experience. Western Pacific Roofing has become my go to company for all of my properties’ roofing needs..."
Additional Photos
Additional Photos
Additional Photos
Recommended by100%of homeowners
Avatar for Anthem Mechanical
Anthem Mechanical
5.0(
6
)
Basement Drainage Channels - Install

Serving Joshua Tree, CA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"They were very efficient, very respectful. they made sure everything was cleaned up. the system is excellent. They installed the water softening for me and did some plumbing work and they were excellent. Terrific customer service."
Plumbing Project
Plumbing Project
Additional Photos
Additional Photos
Additional Photos

+3

Recommended by100%of homeowners
Roy Blaine Levering
5.0(
1
)
Basement Drainage Channels - Install

Serving Joshua Tree, CA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

No job too big or small. We do it all! \n \nRoy's experience has given him the skill to provide the highest level of service available to anyone needing any kind of excavation work. His years in the military have taught him the importance of paying attention to detail and providing top notch customer service. Roy is a man you can trust to do the job right the first time! Call Roy Blaine Levering today in the Temecula area.

Recommended by100%of homeowners
Showing 1-10 of 12
Basement Waterproofing FAQs, answered by experts

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

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.

You should always hire a structural engineer or a professional and licensed foundation repair company for crawl space repair. These professionals will often be able to treat the symptoms of the issue as well as the underlying problem so that you don’t have ongoing damage. They’ll also often take preventative measures to stop the issue from recurring in the future.

Yes, you can technically make a crawl space liveable, but the only way to do so is by converting it into a basement. While some crawl spaces are big enough to walk through and store large items, they lack appropriate insulation and space to be liveable.

If there is standing liquid on your concrete, remove it before attempting any of the above cleaning methods. For small amounts of water, use rags, a bucket, and a mop. For larger areas of liquid, lay down cat litter or baking soda to soak up the water first. If you have extremely large pools of water sitting on your concrete, break out the wet vac and get to work.

The Joshua Tree, CA homeowners’ guide to basement waterproofing services

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