Build Your DIY Aluminum Underdeck System
Answer a few simple questions to find the right OASITek kit for your deck. Our builder helps match your deck dimensions and accessories so you can order with confidence.
Find the Right OASITek System
Enter your deck dimensions to find the best kit or receive a custom quote for larger projects
Have Questions give us a call 1-866-OASITek
Measure from the house outward to the front beam.
Measure left to right across the front of the deck.
Enter your ZIP to check availability for your market.
Your Recommended OASITek System
Enter your measurements
We'll recommend the best kit based on your Depth and Width.
Recommended Kit
Custom Layout May Be Needed
Based on your measurements, your deck is larger than our standard online kit sizes. You can either find a Certified Installer or order based on a custom square-foot quote.
Enter valid measurements
Please enter Depth, Width, and a valid 5-digit ZIP code.
Why Use the OASITek Kit Builder?
Why Use the OASITek Kit Builder?
The OASITek Kit Builder takes the guesswork out of planning your underdeck project. Simply enter your deck dimensions and answer a few questions to receive the best solution for your project.
Whether your deck fits one of our three pre-engineered DIY kit sizes or requires a custom-designed system, we'll help guide you to the right option.
Every recommendation is based on your project—not a one-size-fits-all approach.
With OASITek, you'll enjoy:
✔ Three professionally engineered DIY kit sizes
✔ Custom underdeck systems for decks that fall outside our standard kit dimensions
✔ Premium all-aluminum construction
✔ Free shipping on complete underdeck kits
✔ DIY-friendly installation backed by detailed instructions and videos
✔ Support from a company with more than 20 years of underdeck experience
No matter the size or shape of your deck, OASITek makes it easy to find the right underdeck solution. If one of our standard kits isn't the perfect fit, we'll help design a custom system that's built specifically for your project.
