Both the carpet and the underlay will have a separate tog rating and a combined rating over 2 0 isn t really suitable for underfloor heating.
What is par rating in carpeting.
A class 2 rating is for heavier traffic such as on stairs or in halls.
Homeowners are expected to understand that the higher the par rating number the more durable the carpet will be.
While i m sure they go through a lot of trouble and expense to provide this rating system i personally think it falls short of being a trustworthy gauge for consumers.
How to install carpet with professional help.
I firmly believe it s very important for homeowners to have.
Carpet can be looped with a low profile pile construction which is known for maintaining its appearance or have loops of different heights to form a textured pile.
Par rating is somewhat of a mystery but i included here because i get questions on it.
Most internet sources say it is a rating created by the carpet manufacturer shaw.
The par carpet rating system created by shaw industries designates a number from one to five rating carpet durability based on a typical family of four scenario.
R value is calculated not from the actual materials as much as from the thickness of the carpet.
Ask your dealer to show you the cri chart.
I reached out to shaw and they stated par is not a rating they use.
A low rating is perfect for use with under floor heating while a high rating means the carpet and underlay already offer good insulation and therefore isn t suitable for under floor heating.
A class 1 rating is for moderate traffic such as in bedrooms and formal living rooms.
Performance appearance rating is a 1 5 scale that rates how well a carpet will perform over time.
Carpeting can insulate a home up to 10 times more than hardwood flooring.
R value is a term used to describe the thermal resistance rating of carpet or in plain and simple terms the insulating value.
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.
Many locally owned carpet dealers do list all or some the carpet specs on their carpet samples but some do not list any at all.
I contacted mohawk the only carpets i have seen use a par rating and they were able to give.
Within each rating there s a range of options depending upon your budget and the feel you want.