R Value Of 16 Concrete Wall

Type of building section r value wood frame walls 3 plus r value of the insulation used floors above unheated spaces 2 plus r value of the insulation used ceilings 1 1 2 plus r value of the insulation single glazed windows 0 88 double glazed windows 1 67 doors with glass use r value of the glass for the entire door.

R value of 16 concrete wall.

R values of uninsulated concrete. 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. It provides about r 5 per inch.

Therefore the doe s value is on the high end of the r value of a log wall. Choose this option for areas that need a good amount of strength and water resistance. Energy and the environment. 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.

Insulation level are specified by r value. 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. A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other. Some products have reinforced facing to make them sturdier.

Concrete block wall with perlite in cavities r 2 9. 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. As we said before the r value measures the thermal resistance of a material. This material offers the highest r values about r 6 to 6 5.

Recommended home insulation r values. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Concrete block wall with air in cavities r 2 0. Concrete block makes a cost effective and structurally sound wall but it has.

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