Trex Select Fascia Board 12″ x 12′

Trex fascia boards come in nominal 1 in. x 12 in. x 12 ft. dimensions, but the actual measurements matter more for planning tight installations. The boards measure 0.56 to 0.75 inches thick and 11.25 to 11.375 inches wide — that variance means you’ll want to check each board before cutting miters or planning precise fits.

At 48.68 pounds per 12-foot board, these aren’t featherweights. Plan accordingly for handling and installation. The boards feature a capped composite construction made from 95% recycled materials, combining recycled plastic film with reclaimed sawdust and wood fibers under a protective shell.

Installation and Compatibility

The Deckfast Composite and PVC Fascia Fastening System works specifically with these boards, and for good reason. The system accommodates the expansion and contraction that happens with composite fascia — creating oversized holes so the board can move without stressing the fasteners. Space your fasteners 8 to 12 inches on center, and always pre-drill pilot holes.

Trex designed these fascia boards to match their Select decking line, and they’re compatible with Trex railing systems and Hideaway Hidden Fasteners. The Saddle color provides a medium brown, earth-tone finish that works with multiple decking colors in the Select line.

Major decking manufacturers have evaluated and approved the Deckfast Fascia System — you might actually need fewer fasteners compared to standard deck screws because the system handles movement so effectively.

The Montana Factor

These boards carry a 35-year limited residential warranty, including fade and stain protection. That warranty matters when dealing with Montana’s freeze-thaw cycles and UV exposure at elevation. The capped composite shell resists the fading, staining, rot, and mold that destroys wood fascia in this climate.

The dimensional tolerances become critical during Montana’s temperature swings. That quarter-inch variance in width might not matter in July, but it will show up when materials contract in January. Plan your gaps accordingly.

The splinter-free surface beats wood fascia hands down for safety, especially when kids are running barefoot on decks all summer. Maintenance involves nothing more than soap and water — no annual staining marathons like cedar fascia demands.

Frequently Asked Questions

Q: Can regular deck screws be used instead of the Deckfast system for Trex fascia?

The Deckfast Fascia System creates oversized holes that let the board expand and contract without stressing fasteners — standard screws don’t allow this movement. You could use regular screws, but you’re risking buckling or fastener failure when the material moves.

Q: What’s the actual weight for a typical deck fascia installation?

Each 12-foot board weighs 48.68 pounds. For a 20×16 deck perimeter, you’re handling about 325 pounds of fascia board — heavier than wood but manageable with proper planning.

Q: Do these fascia boards match other Trex decking lines besides Select?

Trex specifically designed these to match Select decking. While you could use them with other lines, the color and texture match won’t be exact. They are compatible with all Trex railing and lighting systems.

Q: How much expansion should be planned for with composite fascia in Montana’s climate?

Composite fascia boards experience significant expansion and contraction. While specific measurements aren’t provided, the Deckfast system’s oversized holes accommodate this movement, suggesting you need substantial clearance at board ends and proper gapping between pieces.