Wool is the finest carpet fiber there is — naturally resilient, soil-hiding, flame-resistant and long-lived — and it costs roughly double and cannot tolerate aggressive cleaning. Nylon delivers most of the performance for much less and forgives mistakes wool does not.
Installed cost includes material and professional labor. Ratings are relative across all 18 materials on this site, not absolute scores.
| Wool Carpet | Nylon Carpet | |
|---|---|---|
| Installed cost per sq ft | $8.00–$22.00 | $4.00–$10.00 |
| Expected service life | 20–40 years | 10–20 years |
| Cost per sq ft per year | $0.50 | $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 | 2/5 | 3/5 |
| DIY friendliness | 1/5 | 2/5 |
| Environmental profile | 5/5 | 3/5 |
| Traffic rating | Heavy | Heavy |
| Commercially rated | Yes | Yes |
The points that decide this in practice — not the spec sheet items that read well but rarely change anyone's mind.
The fiber has a natural crimp and an opaque, scaled surface that scatters light, so dirt is far less visible between cleanings. Nylon shows traffic lanes sooner. In a formal room cleaned infrequently, wool simply looks better for longer — an advantage that has nothing to do with actual cleanliness.
Wool is a protein fiber. Alkaline cleaners, bleach and high-pH spotters damage it permanently. Pet urine is alkaline and strips dye within hours, not days. Nylon tolerates far more aggressive treatment, and solution-dyed nylon can survive dilute bleach in commercial settings. If accidents are likely, wool is the wrong choice regardless of budget.
Wool is naturally flame-resistant — it chars and self-extinguishes rather than melting, and it needs no added flame retardant. Synthetics melt. This matters in commercial specification and is one reason wool persists in hospitality and institutional settings despite the cost.
Wool costs roughly double nylon but lasts substantially longer when maintained, so per year of service the difference is much smaller than the price tags suggest. It does not disappear, though, and the maintenance discipline required is real. Wool rewards attentive owners and punishes casual ones.
$8.00–$22.00 per sq ft installed, lasting 20–40 years — about $0.50 per sq ft per year.
Budget for professional cleaning as a line item. Wool rewards proper maintenance with 30+ year service and punishes the wrong chemical instantly.
$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.
In the right setting, yes — it hides soil better, recovers from crushing naturally, resists flame and lasts a long time when maintained. In a household with pets, small children or infrequent cleaning, the extra spend buys fragility you do not want, and nylon is the better choice.
Hot water extraction is acceptable at moderate temperature by a technician experienced with wool, using wool-safe pH-neutral chemistry. What damages wool is high alkalinity, bleach and excessive heat. Always confirm the cleaner has wool experience — this is one case where hiring the cheapest option can permanently ruin the carpet.
It resists soil well and hides it better than synthetics, but it is vulnerable to specific things: acidic dyes such as red wine and fruit drinks, and anything alkaline including pet urine. Prompt response matters more with wool than with nylon, because dye damage becomes permanent quickly.
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