OASITek Complete Aluminum Underdeck Kits

Overview

The OASITek Complete Aluminum Underdeck Kit is a fully packaged, start-to-finish solution designed to create a clean, dry, professional-grade underdeck ceiling. Each kit includes the major drainage and ceiling components, sealants, hardware, and essential installation tools needed to complete a rectangular underdeck system—without piecing parts together.

Engineered specifically for aluminum underdeck installations, it’s ideal for confident DIY homeowners and contractors who want reliable drainage and a finished outdoor living space.

Fits any rectangular deck up to the listed kit size. Components can be trimmed and configured to match any rectangular layout that is equal to or smaller than the maximum kit size.

Tip: Always choose a kit size that meets or exceeds your deck dimensions.

Why You'll Love It

• Fully packaged kit—no part matching or guesswork
• Designed for clean lines and a professional finished appearance
• Precision-engineered components for proper water flow and drainage
• Reduces ordering mistakes and streamlines installation
• DIY-friendly while still contractor-grade

What's Included

Structural & Drainage Components

• Back wall channel
• Left and right side wall channels
• Aluminum gutter
• Ceiling panels

Accessories & Sealants

• (2) Inside corner boxes
• Geocel® sealant for watertight connections
• Comprehensive instruction manual

Hardware

• All required fasteners and mounting hardware

Included Installation Tools

• 1/4" nut driver
• Angled hand bender
• Metal bending tool
• Suction cup for panel handling

Helpful Notes

• Available kit sizes: Kit A (up to 10′ × 14′) and Kit B (up to 14′ × 20′). Extra material allows for precise cuts and clean terminations within the size range.
• This kit is designed for rectangular deck layouts. Decks with multiple offsets, additional posts, or non-rectangular shapes may require additional components.
• Included tools assist with installation but may not replace professional tools for advanced layouts. Additional tools may be required.
• Optional components (sold separately): Straight Joint, Inside Corner Box, Outside Corner Box.