NRG buildings fit the definition of continuously insulated walls, as DOE defines continuous insulation as having no significant thermal bridges.
A note on NRG
Since there is very little
cost difference between
an NRG 10" block
and an NRG 12",
we recommend the NRG12".
The masons find it easier
to run conduit and place
rebar in the larger cores.
Fire ratings: NRG 8": 2 hour NRG 10": 3 hour NRG 12": 4 hour Please feel free to call or e-mail us if you would like a test report for anthing you do not find on the website.
NRG was invented to save money while delivering cavity wall benefits. NRG shares similar structural characteristics as a cavity wall assembly described in UL listing U938: http://productspec.ul.com/ document.php?id=BXUV.U938
Flashing: using the above NRG detail drawings link, see pages 18-30.
Like all single wythe walls, proper flashing is key. BlockFlash http://www.aecinfo.com/1/company/ 08/70/61/product312085_1.html and traditional step flashing have both been used with success in NRG projects.