What Is a Continuous Insulation Requirement by Climate Zone?
Continuous insulation (ci — the uninterrupted — the thermal-bridge-free) requirements scale with the climate zone: the IECC/ASHRAE 90.1 prescribing the R-values (the Zone 1's R-5 — the Zone 8's R-25+ for the mass walls). The design: the zone's (the map's), the assembly's (the table's), and the installation (the continuous — the fasteners' minimal). The envelope's code — the zone's prescription.
Best price · Quotes back fast · PE stamps backed by Apex Grid Engineering
The zone's scaling
The hot (Zones 1-2 — the R-5 ci; the cooling's), the mixed (Zones 3-4 — the R-7.5 to R-10; the both), the cold (Zones 5-6 — the R-10 to R-15; the heating's), and the very cold (Zones 7-8 — the R-15 to R-25+; the Arctic's). The tables (the IECC's — the assembly's; the 90.1's — the building's).
The ci's details
The materials (the polyiso, the XPS, the mineral wool — the R/inch; the fire — the ratings), the attachment (the long screws — the thermal's minimal; the girts — the bridged), the WRB (the combined — the membranes; the sequencing), and the windows (the buck — the extension; the flashing).
Compliance
The prescriptive (the tables' — the R-values; the simple), the UA (the trade-off — the assembly's; the modeled), and the existing (the IEBC's — the alterations'; the triggers). The ci is the envelope's — the continuous beating the cavity's.
The bottom line
Size continuous insulation per IECC/ASHRAE 90.1 climate-zone tables (R-5 in Zone 1 to R-25+ in Zone 8) — detail WRB, window bucks, and minimized fastener bridging.
Torch Engineering PLLC · (480) 490-0064 · info@torchengineering.com — PE stamping backed by Apex Grid Engineering.