The framing beneath your deck is what keeps the surface flat, stable, and problem-free for the life of the project. Mitchell Construction Custom Decks provides expert Aluminum deck framing installation in Chicago, IL, and Fortress Evolution steel deck framing installation in Chicago, IL, as superior alternatives to pressure-treated lumber across the Chicago suburbs.
As a TrexPro Platinum builder and NADRA Ambassador serving the area since 1978, we build decks from the ground up with materials that will not rot, warp, or decay.
TimberTech Aluminum Framing
Our Aluminum deck framing design in Chicago, IL, includes a complete system of joists, posts, ledgers, and beams where a 2×8 aluminum joist matches the performance of a 2×12 wood joist. Carries a Lifetime Limited Warranty on major components.
- Naturally non-combustible with a Class A Flame Spread Rating
- Resistant to moisture, rust, corrosion, mold, and insect decay
- IRC compliant
- Made from recycled aluminum and recyclable at the end of life
Fortress Evolution Steel Framing
Our team specializes in steel deck framing installation in Chicago, IL, using a galvanized steel framing system with a powder-coated Black Sand finish that installs like wood. Compatible with composite, PVC, hardwood, and virtually any deck board material. Carries a 25-Year Limited Warranty.
- Resistant to rot, warp, splitting, insects, and weather damage
- Class A Fire Safety Rating from the National Fire Protection Association
- Longer spans between supports mean fewer posts and less obstructed views
- Consistent, uniform components eliminate the variation common in pressure-treated lumber
A Stronger Foundation From the Start
As a trusted Aluminum deck framing contractor in Chicago, IL, we know pressure-treated lumber warps, shrinks, and degrades well before the composite decking above it. Metal framing matches the longevity of the decking it supports.
- Wood framing degrades in 15 to 20 years; metal framing is rated for 25 or more
- Metal framing stays flat, preventing waves and undulation in the deck surface
- No staining, sealing, or chemical treatments required
- Recyclable at end of life, unlike pressure-treated lumber
Our Process
Get in Touch: Request a consultation online to discuss your deck’s layout and framing needs.
Design and Plan: We assess your site, span requirements, and decking selection to recommend the right framing system.
Permitting: When permits are required, we handle plan preparation, submission, and inspection scheduling.
Construction: Our team installs framing in accordance with manufacturer specifications and local building codes.
Final Walkthrough: We review every detail with you before the project closes.
Warranties and Financing
- 10-Year Labor Warranty on structural workmanship
- Lifetime Limited Warranty on TimberTech Aluminum Framing; 25-Year Limited Warranty on Fortress Evolution Steel Framing.
- No Monthly Interest If Paid In Full Within 18 Months for qualified buyers.
The Foundation Matters as Much as What’s on Top
A flat, stable, rot-free substructure is what separates a deck that holds up from one that doesn’t. Schedule your consultation, and we will walk you through every framing option for your specific project.
Frequently Asked Questions
What is the difference between TimberTech aluminum framing and Fortress Evolution steel framing?
TimberTech aluminum framing is a fully integrated system designed to pair with TimberTech decking and railing and includes a Lifetime Limited Warranty on major components. Fortress Evolution is a galvanized steel system compatible with any brand of deck boards and comes with a 25-Year Limited Warranty. We walk through the trade-offs during the consultation based on your project and budget.
Can aluminum or steel framing be used on an existing deck?
Both systems are designed for new builds and full deck rebuilds, not for repairing an existing wood frame. If your deck needs a full reframe, either system is a strong option. We assess your existing structure during the consultation.
Is metal framing more expensive than pressure-treated lumber?
The upfront material cost is higher. However, metal framing requires less labor to install, needs no maintenance, and is rated for a significantly longer lifespan. Over the life of the deck, the cost difference narrows considerably.
Does metal framing work with composite decking?
Yes. TimberTech aluminum framing is compatible with every TimberTech decking and railing collection. Fortress Evolution is compatible with composite, PVC, hardwood, and virtually any other deck board material.
Is metal deck framing fire-resistant?
Yes. TimberTech aluminum framing carries a Class A Flame Spread Rating and is naturally non-combustible. Fortress Evolution carries a Class A Fire Safety Rating from the National Fire Protection Association.
Do you serve the Chicago suburbs for aluminum and steel framing installation?
Yes. We install TimberTech aluminum framing and Fortress Evolution steel framing throughout the Chicago suburbs, including Frankfort, Orland Park, Tinley Park, Homer Glen, Mokena, Naperville, and surrounding communities.