As stated previously the cushion is only one component of the r value of the floor covering composite.
Carpet pad with high r value.
Finally contact your cushion manufacturer for a more accurate r value number for your cushion selection.
Less common carpet padding types are made of fibers such as polyester nylon or felt.
When you purchase padding the r value is often one of the qualities listed.
Carpet itself also has an r value.
Urethane padding is low in density making it a lightweight padding choice and because it is not a dense product it is not ideal for high traffic areas.
Memory foam carpet pad provides a very soft and comfortable surface.
Urethane padding has the highest r value of all padding choices.
Carpet padding r values usually fall between r 0 2 and r 2 but can be somewhat higher.
This type of carpet padding should be used in lower traffic areas such as a bedroom so that it retains its luxurious feel.
R value for this type and thickness would be approximately 1 8 x avg.
While r value is an important factor to consider when choosing a flooring material you must also consider your aesthetic preferences.
Adding these two together will produce a r value that can exceed 2 0.
The insulating value of the padding must also be combined with the r value of the installed carpeting.
For example wool carpet rates a maximum r value of 2 1 while other types of carpet can rate as low as 0 7.
The r value rating is anywhere from 1 05 to 2 15 dependent upon the thickness of the pad.
Although carpet is not.