Nylon still has the edge in the most extreme traffic and in commercial specification, and its long track record is real. Triexta closes most of that gap while adding stain resistance that doesn't wear off with cleaning the way nylon's applied treatment does. For a busy household that wants both without babying a topical treatment, triexta is usually the better bet; for the single most punishing corridor in a commercial building, nylon still keeps its lead.
Installed cost includes material and professional labor. Ratings are relative across all 21 materials on this site, not absolute scores.
| Triexta (PTT) Carpet | Nylon Carpet | |
|---|---|---|
| Installed cost per sq ft | $4.00–$9.50 | $4.00–$10.00 |
| Expected service life | 8–18 years | 10–20 years |
| Cost per sq ft per year | $0.52 | $0.47 |
| Durability | 4/5 | 4/5 |
| Water resistance | 3/5 | 2/5 |
| Comfort underfoot | 5/5 | 5/5 |
| Sound absorption | 5/5 | 5/5 |
| Ease of maintenance | 4/5 | 3/5 |
| DIY friendliness | 2/5 | 2/5 |
| Environmental profile | 4/5 | 3/5 |
| Traffic rating | Heavy | Heavy |
| Commercially rated | No | Yes |
The points that decide this in practice — not the spec sheet items that read well but rarely change anyone's mind.
Nylon's stain protection is a topical treatment sprayed on after tufting, and it diminishes with every hot-water extraction over the life of the carpet — which is why manufacturers recommend rebalancing treatments periodically. Triexta's resistance to both oil- and water-based staining is a property of the PTT polymer itself. It doesn’t wash out, which is what backs the unusually broad stain warranties some triexta products carry.
Nylon's molecular memory remains the benchmark for crush recovery among mainstream fibers, and independent testing is more consistent on triexta's stain-resistance claim than on a full resilience match. Treat triexta as "closes most of the gap" rather than "equals nylon" — the honest version, and still a meaningful step up from polyester.
Most triexta marketing, warranty structures and product lines are built around residential use. Nylon remains the fiber specified for the most punishing institutional corridors and highest-traffic commercial floors, where decades of performance data carry real weight.
Some triexta fiber substitutes a portion of its petroleum feedstock with plant-derived material, a verifiable and specific claim. Nylon's environmental profile leans instead on its ability to be depolymerized and recycled at end of life. Both are legitimate; they aren’t the same claim, and the percentages are worth asking for either way.
$4.00–$9.50 per sq ft installed, lasting 8–18 years — about $0.52 per sq ft per year.
The realistic pitch is "most of nylon’s resilience, none of nylon’s reapplied stain treatment" — not "identical to nylon." Judged on that basis, it’s usually worth the premium over plain polyester.
$4.00–$10.00 per sq ft installed, lasting 10–20 years — about $0.47 per sq ft per year.
If you buy one upgrade, make it solution-dyed nylon over a quality 8 lb pad. It costs roughly 15% more and routinely doubles usable life.
Close, but the honest answer isn’t identical. Triexta's crush recovery runs meaningfully closer to nylon than polyester ever managed, which is the whole point of the fiber, but nylon retains the edge in the most extreme traffic and remains the fiber of choice for demanding commercial specification.
No, and that is the core difference between them. Nylon's stain protection is a topical treatment applied after tufting that diminishes with repeated cleaning. Triexta's resistance to oil- and water-based staining is part of the polymer itself, which is why several triexta products carry broader stain warranties than comparable nylon.
Roughly comparable, and the ranges overlap. Triexta generally costs more than standard PET polyester and competes directly with mid-to-premium nylon rather than undercutting it. Choose between them on stain-resistance mechanism and traffic level, not on an assumed price gap.
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