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Trex composite deck installation in King County WA
Deckingby David Sanders

Why Trex Composite Decking Is Perfect for Washington State

If you live in Washington State, you know our climate can be tough on outdoor structures. Rain, moisture, and mild temperatures create the perfect conditions for wood rot, mold, and mildew. That's why more King County homeowners are choosing Trex composite decking for their outdoor living spaces.

The Problem with Wood Decks in the PNW

Traditional wood decks — even pressure-treated lumber — require significant maintenance in our climate: - Annual power washing to remove moss and mildew - Staining or sealing every 1-2 years - Board replacement as wood warps, cracks, and rots - Ongoing costs of $500-$1,500+ per year in maintenance

Over 10-15 years, maintenance costs can exceed the original deck cost.

Why Trex Wins in Our Climate

Trex composite decking is engineered to thrive in the Pacific Northwest:

**Moisture Resistant:** Trex won't absorb water, preventing rot, swelling, and warping that plague wood decks.

**Mold and Mildew Resistant:** The non-porous surface resists the mold and mildew growth that's common in our wet climate.

**No Staining or Sealing:** Simply wash with soap and water. No annual staining required.

**Fade Resistant:** Trex maintains its color despite our mix of rain and sun.

**25-Year Warranty:** Trex stands behind their product with a comprehensive warranty.

The Cost Comparison

While Trex has a higher upfront cost than wood ($30-$60/sq ft vs $15-$30/sq ft installed), the total cost of ownership over 20+ years is significantly lower when you factor in zero maintenance costs and no board replacements.

Popular Trex Options for King County Homes

  • **Trex Transcend:** Premium line with deep wood-grain patterns
  • **Trex Select:** Best value for a quality composite deck
  • **Trex Enhance:** Budget-friendly entry into composite decking

Build Your Trex Deck

A. Sanders Construction builds custom Trex decks throughout Maple Valley, Renton, Kent, Covington, and Issaquah. From design to permit to installation, we handle everything. Call (206) 799-6580 for a free deck estimate.

About the Author

David Sanders

Project Manager, A. Sanders Construction LLC

Licensed Contractor #ASANDSC9210K | BBB Accredited | Serving South King County since 2005

Ready to Start Your Project?

Contact A. Sanders Construction for a free remodeling estimate.