R Value Of 16 Concrete Wall

The higher the r value the better the thermal performance of the insulation.

R value of 16 concrete wall.

Some products have reinforced facing to make them sturdier. It provides r values that range from 3 6 to 4 2 per inch. R inch r thick ness insulation materials fiberglass batt 3 14 fiberglass blown attic 2 20 1 fiberglass blown wall 3 20 rock wool batt 3 14 rock wool blown attic 3 10 rock wool blown wall 3 03 cellulose blown attic 3 13 cellulose blown wall 3 70 vermiculite 2 13 air entrained concrete 3 90 urea terpolymer foam 4 48. Concrete block wall with perlite in cavities r 2 9.

Concrete block wall with air in cavities r 2 0. This material offers the highest r values about r 6 to 6 5. A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other. R value is a measure of insulation s ability to resist heat traveling through it.

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 uninsulated concrete. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. The reason that it is important to make a good estimate for the current r value for uninsulated spaces is that small changes in r values result in large changes in heat loss when the total r value is low.

The r value of an uninsulated 8 inch thick basement wall built using normal weight concrete is 1 35 based on data from the 1993 american society of heating refrigeration and air conditioning engineers handbook. As we said before the r value measures the thermal resistance of a material. Choose this option for areas that need a good amount of strength and water resistance. Concrete homes magazine web search 5 18 2010 r value for concrete glass other materials wikipedia web search 5 18 2010 citing ristinen robert a and jack j.

For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. Recommended home insulation r values. Therefore the doe s value is on the high end of the r value of a log wall. Concrete block makes a cost effective and structurally sound wall but it has.

It provides about r 5 per inch. Energy and the environment.