Custom Under-Deck Waterproofing – Protect & Maximize Your Outdoor Space

Our custom under-deck waterproofing solutions are designed to keep the space beneath your deck dry and usable. Whether you want to create a weatherproof patio or protect your storage area, we offer durable, long-lasting waterproofing options that enhance your deck’s functionality.

Expert Waterproofing Installers – Durable & Reliable Solutions

At Petra Decks, we manage every step of your under-deck waterproofing installation, from initial consultation to final installation, ensuring a seamless, hassle-free experience. Our expert team uses high-quality materials and proven techniques to provide a waterproof, weather-resistant solution that lasts.

Contact us today for a free consultation and make the most of your outdoor space in Eastside King County!

Frequently Asked Questions

What materials do you use for custom deck designs?

We specialize in crafting durable and visually stunning custom decks using high-quality materials like composite, hardwood, cedar, and PVC. Our expertly designed decks are built to withstand the elements while enhancing your outdoor space with style and functionality. Whether you prefer the low-maintenance benefits of composite decking or the natural beauty of hardwood and cedar, we tailor each design to match your unique preferences and lifestyle needs.

Can I see a sample of the materials you use?

Yes! We offer a mobile showroom experience, bringing samples of all our premium deck materials—including composite, hardwood, cedar, and PVC—right to your doorstep. This allows you to see, feel, and compare different options in person, so you can confidently select the perfect materials for your custom deck.

How long does the deck construction process take?

The deck construction timeline depends on factors such as project complexity, size, and weather conditions. On average, our expert team completes deck installations within a few days to a couple of weeks from start to finish. We ensure efficient project management while maintaining the highest standards of quality, durability, and craftsmanship

Is the decking and railing material covered under warranty?

Yes! The decking and railing materials we use are covered by manufacturer warranties, which vary depending on the brand and type of material. Many composite and PVC decking products come with warranties ranging from 25-50 years to lifetime coverage, while wood decking may have more limited protection. We’ll provide detailed warranty information for your chosen materials and ensure you have peace of mind with a durable, long-lasting deck

Do you handle all necessary permits for deck construction?

Yes! We handle all necessary permits and ensure full compliance with local building codes and regulations, making the construction process smooth and stress-free. Our expertise in Eastside King County permit requirements guarantees that your deck is built safely, legally, and to the highest industry standards. Let us take care of the paperwork so you can focus on enjoying your new outdoor space!