Why Your Upper Deck is a Heat Trap On a 90-degree day, a wood or composite deck surface can reach temperatures of 140 degrees Fahrenheit.

The 2026 Shift: From “Under-the-Deck” to “Outdoor Living Great Room” Historically, the space beneath a second-story deck was a dark, damp afterthought—usually reserved for lawnmowers

Imagine it’s a Saturday afternoon in July. A sudden thunderstorm rolls in. On a traditional deck, the party ends with a mad dash to save