
Joist Span Tablesfor DFW Load Conditions
Collin and Travis County inspectors check joist sizing on every permit pull. These spans assume 40 psf live load + 10 psf dead load — standard for Texas residential decks.
| Species | Spacing | Max Span | Notes |
|---|---|---|---|
| Southern Yellow Pine | 12" | 16'0" | Most common DFW |
| Douglas Fir | 16" | 14'6" | Strong grain |
| Hem-Fir | 16" | 12'0" | Budget option |
| LVL Beam | 24" | 20'0" | Multi-level builds |
| Steel Joist | 24" | 28'0" | Commercial grade |
Composite vs.Pressure-Treated
The most common question we get. The honest answer depends on your budget, how much maintenance you'll actually do, and how long you plan to stay in the house.


Span tables, permit checklists for all 3 counties, material cost calculator, and a seasonal maintenance schedule. Everything you need before the first shovel.
Permit Checklistby County — DFW Service Area
Most deck projects over 200 sq ft require a permit. We pull permits in-house for every job — but here's what the inspector will look for in your county.
12-Month DeckCare Calendar
Texas decks face 100°F summers and surprise ice storms. Six check-ins a year keeps a composite deck looking new at year 15 and a PT deck from cupping before year 5.
Post-winter wash. Inspect ledger bolts.
Stain/seal PT boards. Check for lifted fasteners.
Inspect composite for heat expansion gaps.
Tighten railing hardware. Clean drainage gaps.
Clear debris. Inspect footing frost heave.
Cover furniture. Check joist hanger corrosion.

"Three years in and it still looks the day they left. Not one warped board."

