
Framing Material Alternatives
STEEL DECK FRAMING

rot? We think not.
Why build a 25-year deck on a wood frame that rots? Our Evolution steel deck framing and stair system is the next evolution in decking. If you know how to frame with wood, you can frame with steel, even on curves. The interlocking joist and ledger system lets you build sturdy, safe decks with less effort. Our powder coated finish provides increased corrosion-resistance and a more finished look. Discover a smarter steel framing system designed by deck builders, for deck builders.Proven Performance. Smarter Solutions. Trust our durable, reliable, steel and aluminum products built on a spirit of innovation and tailored to meet your unique needs.
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REVOLUTION BUILT THIS EVOLUTION
Fortress® set out to challenge the way decks are built. Deck boards, railings and accessories continue to evolve, but the frame they are built on has remained the same. Until now.
Our revolutionary steel deck framing and stair systems are engineered to be the smarter evolution in framing technology. Like all Fortress products, these solutions are designed to deliver low-maintenance, durability, ease of installation and safety.

FRAMING MATERIAL ALTERNATIVES
TREATED LVL DECK FRAMING
expertise meets functionality.
PWT is a world-first, manufacture-treated LVL, an innovative solution for engineered decking. This is the only LVL treated during the manufacturer process, providing uniform diversion of the treatment throughout the thickness and length of the material ensuring lasting durability. With a 25-year limited warranty for protection against fungal rot, decay, and wood-destroying insects, strength, stiffness, and uniformity are all engineered in. Trust PWT Treated LVL for your next project.
KEY FEATURES
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Engineered for consistent strength- software calculations are more convenient and accurate
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Easy to work with- weighs less than pressure treated lumber of equal size
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Uniform in size, wane free, and straight - No twist or bow and no need for crowning joists. With uniform moisture content, the size stays proportionate as it grows or shrinks.
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Sustainability – Wood is the right choice for a host of construction applications. It is the earth’s natural, energy efficient, and renewable building material.


Unnasch Construction offers interior remodels, skylight and sun tunnel installation and more. Deckology specializes in transforming your outdoor living space through custom decks, patios, porches and accessories. Based in Mantorville, Minnesota, they serve the entire southeast region of Minnesota.
© 2025 Unnasch Construction | Deckology, All Rights Reserved. A Sav Creative Site.
MARC UNNASCH
MN License #BC740061


A GREAT ALTERNATIVE TO TRADITIONAL FRAMING
Treated LVLs are a great alternative to traditional treated framing due to consistency and strength, and also being treated completely during manufacturing rather than just pressure treated. We can use these for the entire deck frame and stair stringers or just the beams. Their use allows us to span further from the house and between support posts. This opens up views and patio space below. Using these LVL beams also lets us build a much stronger beam in one solid piece where traditionally we would have had seams on top of mid posts.