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Carpet par rating definition.
The par carpet rating system was created by shaw industries and designates a number from one to five rating a carpet s durability based on a typical family of four scenario.
A cushion with an r value of 2 and a carpet with an r value of 1 would have an r value of 3 for the composite.
For most areas of the home carpet pads should have a minimum density rating of 6 and be around 3 8 to 1 2inch thick but opt for a slightly thinner and more dense pad around 8 for high traffic areas like stairs and be sure to choose a purpose specific pad if you are carpeting over heated flooring.
The pile density rating is the key to carpet durability.
Homeowners are expected to understand that the higher the par rating number the more durable the carpet will be.
These ratings take into account the total of the carpet and not just how the face fiber will perform but they do not reflect any other variables such as staining maintenance and poor installation.
Heavy change a result of 2 or more is needed to pass and a.
Par or performance ratings performance appearance rating is a 1 5 scale that rates how well a carpet will perform over time.
Wear rating durability rating wear rating is a subjective measure of how long the carpet will last.
When you re evaluating carpet for possible use in your facility three key terms to understand are gauge twist and resiliency.
Since the rating is created by the same company selling the carpet it s in your best interest to not put too much stock in it.
Think of it like a densely wooded forest where the trees are thick and packed closely together.
The density rating is determined by pile yarn weight pile thickness and pile height.
It s determined by the carpet manufacturer and it s usually a 1 5 rating system.
For example carpet with a 4 0 tarr will retain its original new texture appearance longer in various traffic conditions than carpet with a 3 0 rating.
Having explained the science how can this information help make sound floor covering decisions in terms of energy.
After vigorous industry standard wear simulating 20 000 foot traffic the worn carpet is compared to an unworn piece to determine how the piece has changed.
After testing the carpet is given a rating on a scale of 1 5 with 5 being the best result.