Trusted Waterproofing Company in Los Angeles, CA

Water damage doesn’t take long to escalate. What starts as a small issue can quickly turn into structural damage, mold, or costly repairs.

At Crank Waterproofing, we help homeowners and businesses across Los Angeles stop moisture at the source. With over 70 years of experience in Southern California, we know how to build waterproofing systems that hold up against coastal air, seasonal rain, and everyday wear.

Whether you’re dealing with an active issue or looking to prevent one, our team delivers practical, long-lasting solutions—without overcomplicating the process.

We provide full-service waterproofing for residential and commercial properties, focusing on the areas most vulnerable to moisture damage.

Foundation & Basement Waterproofing

Cracks, poor drainage, and shifting soil can allow water to enter below-grade spaces. We install proven systems that stop moisture before it reaches your structure.

Deck & Balcony Waterproofing

Outdoor surfaces take constant exposure from sun, rain, and foot traffic. Our waterproofing systems protect against leaks, dry rot, and long-term structural damage.

Exterior Stairs & Walkways

These high-traffic areas are often overlooked until damage appears. We seal and protect wood and concrete surfaces to improve safety and extend their lifespan.

Exterior & Patio Waterproofing

From stucco walls to patios and windows, we seal common entry points where moisture can break down materials over time.

Roof Waterproofing

Your roof is your first line of defense. We apply coatings and waterproofing systems that prevent leaks and reinforce vulnerable areas.

Waterproofing in Los Angeles isn’t one-size-fits-all. Most properties we work on deal with:

• Sun exposure that breaks down coatings and sealants
• Seasonal rain that exposes weak points in decks, roofs, and foundations
• Coastal moisture and salt air that accelerates wear
• Aging construction that wasn’t built with modern waterproofing standards

We focus on fixing the root problem—not just the surface—so you’re not dealing with the same issue again in a few years.

We also offer related services to fully protect your property:

• Roofing repairs, replacement, and coatings
• Deck resurfacing and structural repairs
• Garage floor coatings and epoxy systems
• Railing installation and repair

This allows us to take a more complete approach instead of patching one area while another fails.

• 70+ years of experience in Southern California
• Licensed, bonded, and insured
• Clear, upfront estimates with no surprises
• High-quality materials built to last
• Residential and commercial expertise

We focus on doing the work right the first time—because shortcuts in waterproofing always show up later.

Residential Waterproofing

From leaking decks to foundation moisture, we help homeowners identify the source of the problem and fix it before it spreads.

Commercial Waterproofing

We work with property managers and business owners to protect buildings, reduce liability, and prevent costly disruptions.