Standard Wall Insulation R Value

Measure the depth of your current insulation.

Standard wall insulation r value.

R stands for thermal resistance. The higher the r value the greater the insulation performance. R value is the temperature difference per unit of heat flux needed to sustain one unit of heat flux between the warmer surface and colder surface of a barrier under steady state. While wall insulation is limited by the width of the studs different materials provide higher or lower r values.

Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. R value is a standard unit of measurement for determining among many things how effective your insulation will be. When determining how much insulation you need don t guesstimate calculate. R value level depends on a number of things such as the type of material its density and thickness.

Higher r value numbers mean that the insulating material resists the cold or heat from the outside better. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. Calculate additional insulation needed. The table below shows what levels of insulation are cost effective for different climates and.

Thickness density and type of materials are some factors that contribute to. Fiberglass batts for standard 2 4 walls are now available in low medium and high density products that range from r 11 to r 15. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. R value is a measure of insulation s ability to resist heat traveling through it.

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. An r value is a rating which measures how well insulation can resist heat flow. In the context of building and construction the r value is a measure of how well a two dimensional barrier such as a layer of insulation a window or a complete wall or ceiling resists the conductive flow of heat. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

Try the r value calculator available through oak ridge. The higher the r value the better the thermal performance of the insulation. The higher the r value the better the insulation works. R value measures how well certain building insulation materials can resist heat.

Manufacturers determine the value by the r value or number. Know exactly how much you need with our project calculators. Insulation level are specified by r value. In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation.