Introducing Infinity IS composite decking

Cut Cost, Not Quality

Fortress set out to prove that cost-effective decking could still deliver the strength, usability and beauty of its premium cousins. Well, we did that and more. Now you have two choices in our Infinity Decking – the Dual Sided and the new I‑Series.

Our new I‑Series decking is 40% lighter, while keeping the same stiffness and mechanical properties. This revolutionary design uses the historically proven I‑beam shape, which is uniquely capable of handling heavy loads.

Revolutionary Features

Features: 40% lighter, 2 times stronger, unique

Key Features

  • Natural hardwood look (repeated grain pattern is a thing of the past!)
  • A cost-effective deck option without sacrificing performance
  • 2x the strength of competitive options
  • Available in a wide range of earth-tone colors
  • Advanced geometric design for improved mechanical properties
  • Unprecedented span rating
  • Improved heat dissipation
  • Easy to handle and carry
  • Lightweight at 1.85 pounds per foot
  • Category leading slip resistance
  • Enhanced ventilation
  • Rigid under foot at 16” o.c.
Key Features

Request Free Samples

Sure a picture is worth a thousand words, but actually seeing and touching the product makes all the difference. If you want to check out this one-of-a-kind decking profile in person, simply fill out this request form. We'll have samples out to you in no time.

Stacked Composite Deck Boards

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When you look at the industry differently, you do unexpected things like “create an entirely new category.” We call it Outdurable Living™. This total solution delivers a complete collection of revolutionary products for your customers.

The Total Solution

At Fortress Building Products, we innovate not just to create more products, but to craft smarter products that all work together or can stand alone. We’re here to create a custom solution that’s right for you.



Go to Decking

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Go to Framing

Evolution light-gauge steel framing is uniform and straight, so pieces are simple to square and won't twist, warp, rot, crack or burn like wood.



Go to Connectors

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