Carpet With Low R Value

This is a thin and dense material with a very low r value.

Carpet with low r value.

Thicker pile or berber style. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. R values of different flooring materials. Rosato asbestos insulation is the most authoritative source on asbestos properties and gives data for the thermal conductivity of asbestos in different forms and with varying temperatures for magnesia asbestos insulation at mean temperatures ranging from 100 f to 400 f the k value thermal.

Material thermal insulation r value m2k w concrete 10 cm thick 0 07 0 08 carpet 1 cm thick 0 18 fibreglass insulation 1 cm thick 0 22 thermal resistance of materials1 the r value is used to measure a material s resistance to heat transfer or thermal resistance the higher the r value the greater the insulating effect. As an alternative you can buy synthetic products that have a green label plus from the carpet and rug institute. R values of different flooring materials. While r value is an important factor to consider when choosing a flooring material you must also consider your aesthetic preferences.

If veiwing this page on a phone it s best to turn the phone to view in landscape mode r values of flooring materials. When you add both the r value of the carpet and the pad together you will get the complete r value and insulation value added to your home. Carpets made with natural fibers such as wool or cotton usually have the lowest amounts of volatile organic compounds vocs. In this case choose cushion and carpet.

You don t want to insulate right above your radiant heat source otherwise your radiant heat system will have to expend more energy to heat the room. 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 key here is high density and a low r value. A great choice for a carpet pad would be 1 4 inch slab rubber foam.

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. Notes to the table above. For radiant floor heating you want the total r value to be as low as possible lower than 4 0. Being in the middle with its r value fiber padding provides a pretty good warming and cooling property along with decent carpet support.

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. The r values of the carpet and padding add together for a total r value. Some carpet and padding combinations can measure an r value of over. These numbers will vary from material to material.

Having explained the science how can this information help make sound floor covering decisions in terms of energy efficiency.