TimberTech Legacy Collection Decking

TimberTech Legacy Collection delivers 85% recycled content composite decking with 4-sided polymer cap with Mold Guard technology that outperforms most competitors’ 3-sided caps. Built for Montana contractors who understand that moisture protection matters more than aesthetics when freeze-thaw cycles test every board edge.

4-Sided Protection That Actually Matters

The 4-sided polymer cap changes the game. Legacy is capped on all 4 sides, providing better moisture protection than the 3-sided caps typically found on Trex Transcend. That bottom edge protection prevents moisture wicking through exposed composite — critical when spring snowmelt keeps deck framing wet for weeks.

Mold Guard technology backs up the moisture barrier, resisting mold, mildew, and rot on all sides. Not marketing fluff. Real protection where Montana’s 94% January humidity (Libby) meets constant temperature swings.

Specifications and Installation

Specification	Value
Actual Dimensions	0.94 in × 5.36 in
Nominal Size	5/4 in × 6 in
Available Lengths	12 ft, 16 ft, 20 ft
Edge Profiles	Grooved (for hidden fasteners), Square-shoulder (for exposed edges and stairs)
Joist Spacing	16 in on-center for residential applications and 12 in on-center for commercial

The 16-inch on-center joist spacing for residential handles Montana snow loads without overbuilding. Commercial projects drop to 12 inches on-center — smart engineering for high-traffic boardwalks around Flathead Lake.

Compatible fastening systems give contractors options: CONCEALoc® Hidden Fasteners (for grooved boards), SIDELoc® Hidden Deck Screws, Cortex® Hidden Fastening System (for square edge boards), FUSIONLoc®, TOPLoc® Face-Fastening System. Use grooved boards for the main deck to achieve a fastener-free surface. Use square-shoulder boards for perimeter, stairs, and fascia.

Environmental Performance Worth Paying For

Approximately 85% recycled content isn’t greenwashing — it’s post-consumer plastics like plastic bags and milk jugs plus reclaimed wood fibers. The 30-Year Limited Warranty covers both structural integrity and fade and stain performance.

Suitable for high-traffic outdoor commercial spaces means it handles abuse. Contractors installing at Whitefish Mountain Resort or Glacier Park lodges need that commercial-grade durability. The 30-year warranty timeline makes sense when competing products fail Montana’s freeze-thaw testing in half that time.

Fully compatible with TimberTech railing systems simplifies ordering. Match with Matching Fascia Boards (12 ft), Stair Riser Boards (12 ft) for complete system integration.

The Bottom Line

Legacy Collection earns its premium positioning through genuine performance advantages. The 4-sided capping alone justifies consideration for any deck exposed to Montana weather. Add the 85% recycled content, extended warranties, and proven commercial durability — contractors get a defensible upsell.

Not perfect. Potential for scratches from pets shows up in forums, though the 3.4 out of 5 stars rating suggests most users find the trade-offs acceptable. At elevation with intense UV and moisture cycling, that fourth side of protection matters more than pristine aesthetics anyway.

FAQ

What makes TimberTech Legacy different from standard composite decking?

The 4-sided polymer cap sets Legacy apart. While competitors like Trex Transcend use 3-sided capping, Legacy protects all four sides with Mold Guard technology. This complete encapsulation prevents moisture wicking through the bottom edge — crucial for longevity in wet climates.

What are the actual board dimensions?

Legacy boards measure 0.94 inches thick by 5.36 inches wide (actual), sold as nominal 5/4” × 6”. Available in 12, 16, and 20-foot lengths. Two edge profiles: grooved for hidden fasteners and square-shoulder for stairs and borders.

How far apart should joists be spaced?

Residential installations require 16 inches on-center joist spacing. Commercial or diagonal installations need 12 inches on-center for adequate support. These specifications handle typical snow loads when properly installed.

What fastening systems work with Legacy decking?

Legacy accepts multiple fastener types: CONCEALoc and FUSIONLoc hidden fasteners for grooved boards, Cortex system for square-edge boards, SIDELoc hidden screws, or TOPLoc face-fastening. Hidden fasteners create the cleanest look but cost more in labor and materials.

Does the 30-year warranty really mean anything?

TimberTech backs Legacy with separate 30-year warranties for structural integrity and fade/stain resistance. These parallel warranties suggest confidence in both the core material and the cap layer. Real-world performance in harsh climates will prove whether these warranties hold up.