Is Your Deck Structurally Deficient?
80% of Decks In The U.S. Are Structurally Deficient
How Denver’s Climate Accelerates Deck Damage
Colorado homeowners face a unique set of challenges when it comes to deck longevity. The Denver area experiences over 300 days of sunshine per year, which sounds great for outdoor living but is actually hard on decking materials. UV radiation at our altitude runs about 20% stronger than at sea level, which accelerates fading, cracking, and surface degradation on wood decks.
Then there’s the freeze-thaw cycle. Snow and rain push moisture into the wood grain. Overnight temps drop and that moisture freezes, expanding the wood fibers from the inside. When temperatures warm again, the water escapes, leaving behind small voids. Repeat that process dozens of times each winter and you have the conditions for serious structural decay, often in places you can’t easily see.
Homeowners in Littleton, Highlands Ranch, and Wheat Ridge tend to see this pattern accelerate on north-facing decks that hold snow longer and dry out more slowly. If your deck faces north or sits in a shaded area, add it to your priority inspection list this spring.
The good news is that modern composite decking and steel subframe systems are engineered specifically to handle these conditions. If your inspection reveals significant wood deterioration, a rebuild with these materials is worth a serious conversation.

Ensure Your Deck Health
- Don’t allow water to pool on the deck,
- Push snow off the deck with a soft-bristled broom, if the snow has been there longer than a day or two,
- If you have a ground-level deck, try to inspect the deck structure with a flashlight,
- If you have a ground-level deck, look for and remove any ground contact points.
Inspect Your Deck
- Discoloration in the wood
- Your deck is sagging or has shifted away from the house or other structure it’s attached to
- Cracked or splintered joists
- Insects like termites or carpenter ants around or near the deck
- Steps creak or shift when you put weight on them
- Wood beginning to splinter or powder.
