What is R Value? How does the Stak Block wall make a difference?

The R-value is a measure of thermal resistance, which represents the ability of a material to resist the flow of heat. Specifically, it measures the resistance of a material to heat transfer through conduction, convection, and radiation. The higher the R-value of a material, the more effective it is at insulating against heat loss or gain.

In the context of Stak Block, which is a structurally insulating building block, the R-value is an important parameter because it determines the energy efficiency of the building envelope. The Stak Block is designed to have a high R-value, which helps to reduce the amount of energy required to maintain comfortable indoor temperatures. This can lead to lower energy bills and a smaller carbon footprint.

ASTM standard 518-04 is a test method for determining the thermal transmission properties of insulating materials. It involves measuring the steady-state heat transfer through a test specimen under specified conditions of temperature, surface area, and temperature difference. By testing Stak Blocks using this standard, it is possible to determine their R-value and other thermal properties, such as thermal conductivity and thermal diffusivity. This information can then be used to optimize the design of the building envelope for maximum energy efficiency. Download The R-Value Testing Report.