06/17/2026
An untreated southern pine deck exposed to outdoor conditions can show structural problems within 3-5 years in high-decay zones.
By year 10, failure becomes a real concern.
That same deck built with pressure-treated southern pine typically performs reliably for 30, 40, even 50+ years.
The proof is in the pressure: there are decks from the 1980s and 1990s still hosting family gatherings today!
And regarding cost, the economics are clear over a 40-year period. Untreated wood costs less initially but needs replacement every 5-10 years, while pressure-treated southern pine typically costs more upfront but lasts a lifetime.
When you factor in replacement, labor, disposal, and environmental impact, choosing treated wood actually saves you money in the long run while providing superior reliability. ✅