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Waterproofing Services in Alta Dena, California

Protect Your Home or Business
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Alta Dena homes and businesses face unique water damage challenges, from balcony leaks to deck and rooftop exposure. Thome Waterproofing Company provides professional waterproofing services for residential and commercial properties, protecting your investment with durable, long-lasting solutions.

Our Waterproofing Services

We offer complete waterproofing and coating solutions for residential, commercial, and multi-unit properties throughout the Alta Dena area.

Below-Grade Waterproofing
Stop water before it enters your foundation or basement. Our below-grade waterproofing services, including code required plate line and mud sill treatments, prevent leaks, cracking, and moisture intrusion from the ground up.
Waterproof Deck Coating
Protect your deck from weather damage while maintaining safety and appeal. Ideal for pedestrian and vehicular decks.
Pool Deck Coating
Keep your pool deck attractive, slip-resistant, and protected against sun, water, and chemical exposure for long-lasting enjoyment.
Balcony Waterproofing
Stop leaks, rot, and corrosion before they become costly problems. We seal and protect balconies to ensure durability, safety, and longevity.
Planter Waterproofing
Avoid water damage caused by planters and rooftop gardens. Our planter waterproofing solutions keep your plants healthy while protecting surrounding surfaces.
Decorative Coating Services
Turn ordinary concrete into a stylish, resilient surface. Ideal for patios, pool decks, driveways, and walkways that need both beauty and durability.
Emergency Tarping Services
When unexpected water intrusion occurs, our emergency tarping provides fast, temporary protection to prevent additional damage until permanent solutions can be applied.

One-Hour, Class A Fire-Rated Deck Coatings

Protect your Alta Dena property with confidence. Our Class A fire-rated deck coating systems provide one-hour fire resistance, combining safety, durability, and waterproof performance in a single solution. Designed for balconies, walkways, and rooftop decks, these systems meet ICC and ASTM standards and are approved for use over wood or concrete substrates.

Each system is engineered to prevent flame spread and structural failure, providing a reliable fire barrier that meets building code requirements for multi-family and commercial applications. In addition to fire protection, our coatings create a seamless, watertight surface that resists UV exposure, moisture, and heavy foot traffic—ensuring lasting performance and peace of mind.

Whether you’re upgrading an existing deck or constructing a new one, our certified applicators deliver a professional finish that enhances both safety and design.

  • One-Hour Fire Rating (ASTM E119 / UL 263)
  • Class A Flame Spread (ASTM E84)
  • Waterproof & Slip-Resistant Finish
  • ICC-ESR and IAPMO Approved Systems

Get in touch with us now to learn which Class A system will best fit your deck or balcony project needs.

Contact Us for a Consultation

 

Alta Dena Homeowners & Businesses Trust Us Thome Waterproofing

“We don’t cut corners to save money. We design and install the right waterproofing system for your property—one that’s effective, precise, and permanent.”

  • Over 30 years of professional waterproofing experience in Southern California
  • Fully licensed and insured (CA License #974178, C33 Classification)
  • Local team proudly serving Los Angeles and Ventura Counties
  • Owner personally oversees every project from start to finish
  • High-quality materials and systems built for lasting results
  • Clear communication, fair pricing, and reliable service

Our Proven 4-Step Process

  1. Consultation & Site Inspection – We evaluate your property to identify the source of water issues and potential risks.
  2. Customized Plan – You’ll receive a clear, tailored waterproofing solution designed specifically for your building’s needs.
  3. Professional Installation – Our experienced team applies high-quality materials and trusted techniques to ensure lasting results.
  4. Final Walkthrough – We review the completed work with you to confirm it meets our standards — and yours.

Frequently Asked Questions

What are the signs I need waterproofing for my Alta Dena home?
Look for peeling paint, warped surfaces, cracks in walls or decks, or any visible moisture. These are early indicators of water intrusion that should be addressed promptly.
How long does waterproofing last?
With professional installation and premium materials, most waterproofing systems in Alta Dena last 10–25 years, depending on exposure and maintenance.
Do you offer inspections or consultations in Alta Dena?
Yes! We provide professional waterproofing consultations for homeowners and business owners in Alta Dena and surrounding areas. Simply call us or fill out our quick contact form.
What areas near Alta Dena do you serve?
We proudly serve Pasadena, La Cañada Flintridge, Glendale, La Crescenta, Montrose, and the greater Los Angeles County region.
Can waterproofing improve my property value?
Absolutely. Proper waterproofing prevents damage, protects structural integrity, and enhances both the safety and long-term value of your property.

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