Southern California’s Deck & Balcony Waterproofing Specialists
We waterproof decks, balconies, and roof decks using proven systems that keep water out, protect the structure below, and deliver years of reliable performance. Whether you are dealing with an active leak or planning a new project, our licensed C-39 specialists install waterproofing systems built to last.
Complete Deck & Balcony Waterproofing Solutions
From leak detection and structural repairs to complete waterproofing systems, we help homeowners, HOAs, and contractors protect decks and balconies throughout Southern California.
Deck Leak Repair & Waterproofing
Stop leaks before they lead to costly structural damage. We install complete waterproofing systems designed for long-term protection.
Balcony Repairs & Dry Rot Restoration
Repair damaged framing, plywood, flashing, and dry rot before installing a new waterproof waterproofing system.
Roof Deck Waterproofing
Durable waterproof systems for occupied roof decks, terraces, and elevated outdoor living spaces.
HOA & Commercial Deck Waterproofing
Waterproofing solutions for apartment buildings, common area walkways, balconies, and commercial properties.
Why Homeowners & Property Managers Choose SPL
Licensed C-39 Waterproofing Contractor
Westcoat, Sika & Tremco Certified Installers
Structural Repairs & Waterproofing in One Project
Systems Designed for Southern California Conditions
What Our Clients Say
Trusted by homeowners and property managers across Southern California.
"Salvador is an honest guy with great work quality. A true stand up guy"
Michael C.
Homeowner in Newport Beach
"Knowledgeable about waterproofing... job is done right. Highly recommend"
Mimy Y.
Property Manager
Frequently Asked Questions
Get answers to common questions about our waterproofing services.
Can you stop my deck or balcony from leaking permanently?
Our waterproofing systems are designed to keep water from reaching the structure below the deck. By combining proper surface preparation, flashing details, substrate repairs, and manufacturer-approved waterproofing systems, we deliver long-lasting protection that helps prevent future leaks.
Do you repair dry rot and structural damage?
Yes. Water intrusion often damages plywood, framing, flashing, and other structural components. We repair damaged areas before installing a new waterproofing system to ensure a solid, long-lasting foundation.
How long does deck waterproofing last?
The lifespan depends on the system, exposure conditions, maintenance, and traffic levels. Most manufacturer-approved systems provide many years of reliable performance when properly installed and maintained.
How long does a typical project take?
Most residential projects take between 3 and 5 days, depending on weather conditions and whether structural repairs are required.
How much does deck waterproofing cost?
Pricing depends on deck size, condition, repair requirements, system selection, and access. We provide detailed on-site inspections and transparent estimates.
Can I use my deck during construction?
Deck access will be restricted while waterproofing materials are being installed and cured, but access to your home remains uninterrupted.
Why hire a C-39 waterproofing contractor?
A C-39 license is California’s specialty classification for roofing and waterproofing work. Specialized waterproofing contractors have the training, equipment, and manufacturer certifications required for long-term waterproofing performance.
What are the signs my deck needs waterproofing?
Cracks, peeling coatings, soft areas underfoot, water stains underneath balconies, and visible dry rot are common warning signs that waterproofing may be failing.
What warranty do your systems include?
Warranty coverage depends on the selected system and manufacturer requirements. Many systems include warranties ranging from 5 to 10 years or more.
Which areas do you serve?
We provide deck and balcony waterproofing services throughout Los Angeles County, Orange County, Ventura County, and surrounding Southern California communities.
Ready to Protect Your Deck?
Contact our licensed experts today for a comprehensive inspection and professional waterproofing recommendations.