CARPET SCIENCE · PILE RECOVERY, HEAT SET
Thermoplastic recovery
Yes, mechanically. Nylon and polyester are thermoplastic, meaning heat can partially restore their original set. Hot water extraction lets crushed and matted pile recoil toward its manufactured state. Cold and low-moisture methods cannot produce this because the mechanism requires heat.
What is actually happening
This is one of several reasons the Carpet and Rug Institute and most carpet manufacturers specify hot water extraction, and why many warranties require it.
How you prevent it
Use a method that actually applies heat. Ask what temperature the truck-mount runs at.
Yes, mechanically. Nylon and polyester are thermoplastic, meaning heat can partially restore their original set. Hot water extraction lets crushed and matted pile recoil toward its manufactured state. Cold and low-moisture methods cannot produce this because the mechanism requires heat.
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