Carpet Fiber Types Explained: What’s Inside Matters

When it comes to carpet performance, what’s inside the fiber matters just as much as how it looks on the surface.

Different carpet fibers affect durability, softness, stain resistance, and long-term appearance. Here’s a clear breakdown of the most common carpet fiber types.

Carpet Fiber Types Explained from Metro Flooring

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Triexta (SmartStrand® / PTT Fiber)

Triexta is a newer fiber designed for modern households.

Benefits of Triexta:

Built-in, permanent stain resistance

Extremely soft underfoot

Hydrophobic (does not absorb liquids)

Resists odors from spills and pet accidents

Made partially from renewable, plant-based materials

Triexta is ideal for families with kids, pets, and busy lifestyles who want softness without worry.

Polyester (PET) Carpet Fiber

Polyester is known for its softness and vibrant color.

Benefits of Polyester:

Naturally stain resistant to water-based spills

Soft, luxurious feel

Colorfast and fade resistant

Often made from recycled materials

Best suited for low-to-moderate traffic areas, modern polyester fibers perform far better than earlier generations.

Nylon Carpet Fiber

Nylon was the most widely used carpet fiber for many years, but it has fallen out of favor because it isn’t as stain or fade resistant as other fibers.

Benefits of Nylon:

Exceptional durability and resilience

Excellent appearance retention

Strong resistance to wear and crushing

Performs well in high-traffic areas

Dries quickly after cleaning

Nylon is a workhorse fiber that balances performance, style, and longevity.

Olefin (Polypropylene) Carpet Fiber

Olefin isn’t commonly used anymore but was often found in Berber and loop pile carpets.

Benefits of Olefin:

Excellent moisture and mildew resistance

Color is solution-dyed, so it won’t fade

Performs well in basements and casual spaces

Budget-friendly option

Olefin resists stains well but can be more susceptible to crushing, which is why construction matters.

Wool Carpet Fiber
(Natural Fiber Option)

Wool is a premium, natural carpet fiber valued for its beauty and performance.

Benefits of Wool:

Naturally resilient and durable

Excellent soil hiding

Flame resistant

Naturally insulating and sound absorbing

Eco-friendly and biodegradable

Wool carpets are best for homeowners seeking luxury, natural materials, and long-term elegance—with the understanding that they require more careful maintenance.