R-Values

What is the R-Value of a NRG Block?
For a normal weight block (125/ft3), the equivalent R-Value is 20 and 22 respectively, for 10″ and 12″ blocks.

How do these R-Values relate to building codes in both residential and commercial projects?
Most residential building codes require a minimum of R-11 in the basement and R-19 in sidewalls. Most commercial codes address the energy efficiency of the building as a whole. This is known as the envelope. NRG Block’s higher R-Value allows for trade offs, such as more windows or skylights.

How are R-Values calculated?
Values are calculated using the equivalent thickness method as recommended by the National Concrete Masonry Association (NCMA).

How does the R-Value of NRG Block compare to common block?
A NRG Block is higher in R-Value than a standard masonry block, which ranges from 1.5 to 2.5 depending upon the aggregate used.

How does the R-Value compare to other insulated block?
Other block using inserts or hollow core block with poured insulation range between R-4 and R-6 for a 10″ block and between R-6 and R-8 for a 12′” block, depending on the density.