About OASITek Underdecks
OASITek Underdecks is the DIY product line developed by Magnolia Underdecks , created to make premium aluminum underdeck systems accessible to homeowners nationwide.
For over 20 years, Magnolia Underdecks has manufactured custom aluminum underdeck systems installed by Certified Professional Contractors. Those systems have transformed unused space beneath elevated decks into dry, livable outdoor environments — expanding functional living space and increasing overall property value.
As demand grew, we recognized an opportunity: many homeowners want that same elevated result and are fully capable of installing it themselves — provided the product is engineered correctly and the process is clear.
OASITek was strategically launched to deliver that solution — without compromise.
Why We Created a DIY Kit
Luxury outdoor living shouldn’t require a high-end contractor to access it.
OASITek delivers the same core engineering principles, premium aluminum construction, and clean architectural finish that define Magnolia systems — but in a simplified, standardized format designed specifically for confident DIY homeowners.
To maintain clarity and efficiency, OASITek is offered in two pre-engineered kit sizes.
Each kit is professionally designed to cover decks up to these dimensions, providing a streamlined solution that balances quality, affordability, and ease of installation. The result is a durable, professionally designed waterproof
underdeck ceiling at a price point that makes sense for the average homeowner — without compromising on materials or aesthetics.
Raising the Standard in DIY Installation
We believe product quality is only half of the equation...
The true differentiator in the DIY market is clarity.
OASITek is committed to setting the industry standard not only in materials and design, but in the installation experience itself.
Our systems are supported by:
● Clear, step-by-step installation guides
● Professional videos and diagrams
● Simplified component labeling
● Simple layout. No guesswork.
Our goal is simple:
Give homeowners the confidence to execute a professional-grade installation with precision and pride.
When the instructions are intuitive and the engineering is sound, the result is not just a finished ceiling, it’s a successful project experience you can be proud of.
Designed for Value -
Built to Last
Every OASITek system is constructed from high-quality aluminum, designed to resist moisture, corrosion, and long-term weather exposure. Able to withstand the harshest environments, the finished result creates a dry, protected outdoor space ideal for entertaining, relaxing, or adding future features such as lighting and fans.
Beyond comfort, an underdeck ceiling is a priceless architectural upgrade. It reclaims underutilized space and converts it into sophisticated, functional outdoor living —one of the most desirable features in today’s residential market.
We are not simply selling kits.
We are helping homeowners unlock the
full potential of their property.
The Magnolia Partnership
OASITek is proudly connected to Magnolia Underdecks — our professional, custom installation division.
This relationship ensures that while OASITek kits are standardized for simplicity, homeowners are never limited.
If a project requires:
- Custom dimensions over 14' x 20'
- Unique deck configurations
- Additional drainage engineering
- Expanded color options
- Specialty architectural details
then a Magnolia Certified Contractor becomes the go-to solution.
Magnolia’s certified professionals are trained to deliver fully customized systems tailored to complex designs, ensuring that every homeowner — whether DIY or full-service — has access to a professional path forward.
Together, OASITek and Magnolia create a complete ecosystem...
OASITek → Streamlined, premium DIY kits
Magnolia → Fully custom, professionally
installed systems
Two pathways. One standard of quality.
Our Commitment
OASITek exists to elevate the DIY experience.
We are committed to:
- Deliver premium aluminum
systems at an accessible price
- Maintain uncompromised quality
- Provide industry-leading
installation clarity
- Support homeowners with
professionalism and responsiveness
- Partner with Magnolia to ensure
customization is always available
We believe every homeowner deserves the
opportunity to build something exceptional!
