Make the Most of Your Outdoor Space
Create Dry, Usable Space Beneath Your Deck
Turn the unused area under your deck into a beautiful, functional living space with Citadel’s all-aluminum underdeck system. Our patented design keeps the space dry year-round, allowing you to enjoy it for entertaining, relaxing, or storage, with customizable options like lighting, speakers, and over 20 color choices to match your style.
Why Choose Our Underdeck System?
We Have 3 Great Reasons Why!
1
Durable Construction
Our all-aluminum system resists rust, warping, and leaks for long-lasting performance.
2
Superior
Design
Engineered to handle heavy rainfall, it keeps the space beneath your deck completely dry.
3
Custom Fit
& Stylish
Choose from 20+ colors and add features like LED lighting or speakers to match your lifestyle.
Citadel Seamless Guttering Systems, LLC has you covered
Get Started Today
Turn the area under your deck into a dry, usable retreat with expert underdeck installation. Call (309) 322-6671 or request a free quote today to see how Citadel Seamless Guttering Systems can enhance your outdoor living space.
Serving our community for 3 generations
Our Installation Expertise
With decades of experience serving Central Illinois, our team ensures every underdeck system is installed with precision and care. From careful measuring and planning to flawless installation, we deliver a finished space that is both functional and visually appealing for homeowners throughout the region.