Deck Waterproofing in Seattle, WA Area

Deck waterproofing helps protect Seattle properties from frequent rain and prolonged moisture while maintaining their curb appeal. Trust our team of 20 years experience for reliable deck waterproofing in Seattle.

Seattle Deck Waterproofing Services For Homes & Businesses

Deck Waterproofing

Decks and balconies need dependable waterproofing to protect the structure below, especially during Seattle’s long rainy seasons. Our crew installs deck waterproofing systems throughout Seattle using thorough surface preparation, proper slope, and careful detailing around edges, joints, and transitions. We create seamless coverage with durable materials and effective drainage so rainwater sheds away as intended. The finished system is designed to withstand Seattle’s wet climate and provide long-term protection. We also protect surrounding areas, maintain a clean worksite, and keep you informed throughout the project.

EXTERIOR RENOVATION

Residential & Commercial Deck Waterproofing Solutions

Residential Deck Waterproofing

Seattle homes face frequent rain, prolonged moisture, and seasonal temperature changes that can wear down decks and balconies over time. Seams, edges, drainage points, and high-traffic areas are often the first places to deteriorate. We repair and waterproof residential decks to help prevent leaks, wood rot, and moisture intrusion into the living spaces below. Our team works carefully around landscaping and entry points while keeping the work area safe and clean. If you notice staining, peeling coatings, cracks, or soft spots, we can restore your deck’s protection and function.

Commercial Deck Waterproofing

Commercial decks, walkways, and balconies in Seattle require durable waterproofing systems that can withstand frequent rain, prolonged moisture, and regular foot traffic. Even minor failures can lead to structural deterioration and interior leaks if left unaddressed. We work with Seattle property managers and business owners to coordinate access, staging, and scheduling with minimal disruption. Our crew documents existing conditions, communicates clearly, and installs or repairs dependable systems that protect the structure below.

Client Testimonials

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Murl Leibrecht profile picture
Murl Leibrecht
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We had major exterior maintenance and repair work done to our EIFS siding by Exterior Renovations LLC two years ago that included replacing an outside wall with extensive water damage, plus application of elastomeric paint (2 coats), along with sealing of all of our windows. It was an extensive project that lasted nearly a month. The entire crew, starting with Greg Heck, was impressively professional, friendly and experienced. They knew exactly what to do, and took every precaution to protect the shrubbery around the house, in addition to the family room that needed to have an outside wall replaced. Because our exterior walls are EIFS, there were very few choices available in our area, but local painters and home builders all agreed that Exterior Renovations LLC was the best choice by far. After two years, our home still looks newly painted, and the window sealing treatments are in perfect shape. We couldn't be happier with the results, thanks to the obvious dedication and competence of the entire team. We have recommended Greg Heck to our friends and family, and can highly recommend them to anyone requiring specialized exterior work on their home! Thank you Exterior Renovations LLC for your remarkable work!
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Bill Keadle profile picture
Bill Keadle
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Greg and his team did an excellent job repairing and restoring southwest exposed stucco on our Magnolia house. Our neighbors were also impressed with how respectful and courteous the team was during the project. Highly recommend Exterior Renovations!
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Rog Rogers profile picture
Rog Rogers
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Let me say first that my wife and i had an excellent experience with the team from Exterior Renovations LLC. We were very excited to purchase our home in the Leschi area overlooking Lake Washington. However, we knew the stucco exterior and other items needed significant work. I’m not exaggerating when I say the team performed at a “10” on a 1-10 scale. The work was of the highest quality and finished within the timeline and price promised. Would definitely engage their services again!
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aaron koransky profile picture
aaron koransky
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The team at Exterior Renovations is amazing. When we purchased our home, the inspection found some issues in our EIFS This group was recommended and we’re highly responsive, provided a really fair estimate, and the work was outstanding. Strongly recommend for your project.
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Stephen Kertis profile picture
Stephen Kertis
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Exterior Renovations did an amazing job on our renovation project. They completed a full exterior stucco, deck, and window replacement in Seattle and couldn't be happier with the results. Great communication, clean jobsite, and final results look excellent, highly recommended.
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Danielle Reese profile picture
Danielle Reese
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They have done work at our house twice over the years and always do an amazing job! Hugo and the rest of the crew are thorough, professional and provide high-quality workmanship. Do it right the first time and hire them.
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Ava Izdepski profile picture
Ava Izdepski
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Had a great experience working with exterior Renovations on our stucco repair at our home in Kirkland. The stucco looks brand new! The team communicated clearly, showed up on time, and the repair blends in perfectly with the existing finish.
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Cameron Kilstrom profile picture
Cameron Kilstrom
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The team at Exterior Renovations LLC did an excellent job on our exterior renovation project in Bellevue. We had cracking and water damage to our existing Stucco that needed attention, and their team clearly knew what they were doing from the first walkthrough. They explained the repair process, matched the existing Stucco perfectly, and the finish work looks seamless. The crew showed up on time, kept the site clean, and completed everything when they said they would. If you're looking for a reliable company for Stucco repair or new stucco installation, I would absolutely recommend Exterior Renovations LLC.
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Jeffrey Bueler profile picture
Jeffrey Bueler
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Exterior Renovations did a great job on my window replacement project on my house. The communication was clear throughout the whole project. The crew was respectful of the property and the quality of work really shows. The windows look amazing and make a huge difference. Highly recommend.
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valeriy yurchak profile picture
valeriy yurchak
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We hired Exterior Renovations for stucco repair at our home in Bellevue and the experience was smooth from start to finish. They were easy to communicate with, showed up when they said they would, and explained the repair process clearly. The stucco work itself looks great and blends perfectly with the existing exterior. You can tell they take pride in their craftsmanship. I’d definitely recommend them to anyone in the area needing stucco repair or exterior work.
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Our Deck Waterproofing Process

1

Initial Consultation & Deck Waterproofing Inspection

We begin with an on-site inspection of the deck or balcony to document visible wear, cracking, peeling coatings, and signs of water intrusion. Special attention is given to edges, seams, drains, rail posts, wall transitions, and areas over living space where moisture commonly causes damage. We also check surface slope, soft areas, and signs of movement to understand the full condition of the deck system.

2

Scope Review & Project Scheduling

Next, we explain our findings in clear, straightforward terms and recommend the best waterproofing repair or installation approach. You receive a defined scope of work outlining surface preparation, waterproofing system details, reinforcement areas, finish expectations, and site protection. Once approved, we coordinate a start date that fits your schedule and prepare the site by protecting surrounding surfaces, landscaping, and setting up safe access.

3

Deck Waterproofing Installation / Repair & Completion

For repairs or installations, we remove failed coatings or damaged materials and prepare clean, sound surfaces. Any compromised substrate or moisture-related damage is addressed before installing the waterproofing system. Waterproofing is applied in proper layers, reinforced at edges and transitions, and allowed to cure as required. The finished surface is checked for coverage, drainage, and durability.

4

Final Walkthrough & Warranty

Once the work is complete, we perform a final walkthrough with you to review the waterproofed areas and answer any questions. We confirm proper drainage, surface finish, and cure requirements. Warranty details for the completed work are then provided, and we ensure everything meets expectations before we leave.
Exterior renovation project on Bellevue home

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Why Seattle Property Owners Choose Us

We treat deck waterproofing as structural protection work. Prep matters. Proper detailing matters. Clear communication matters. Exterior Renovations LLC is a locally owned company with long-term experience in exterior renovation and waterproofing work. You get one accountable team from inspection to final walkthrough. We show up as scheduled, protect your property, and keep the job moving.

Deck Waterproofing FAQ

How do I know if my deck needs waterproofing?

Signs include peeling coatings, cracks, leaks below the deck, staining, or soft areas.
Some systems can be repaired, while others require replacement depending on condition and age.
Yes. Periodic inspection helps extend the life of the system and catch issues early.
Timing depends on size, surface condition, and cure time. We review timelines before work begins.
Yes. We handle both residential and commercial window replacement and installation projects.
Yes. We waterproof decks, balconies, walkways, and similar exterior surfaces.
Cure time varies by system. We provide clear guidance before and after installation.

Related Exterior Services

From targeted repairs to full exterior upgrades, we provide complete solutions for residential and commercial properties.