The ROSE Construction Method Building Envelope+ has double wall, 2x4 stud construction, with dense pack cellulose insulation (R40) and 8" concrete ICF foundation walls, with 5.5" of closed-cell foam (R27).  Primary roofs have raised heel trusses with 24" min cellulose insulation (R60).  Secondary roofs, walls, and closure zones have closed-cell spray foam insulation.

 

A.  BASEMENT/LOWER LEVEL

1) Occupied Level (Conditioned) Design

• Buried Wall-R27 ICF construction
• Exposed Wall-R40 (same as upper level walls if wood)
• Slab-on-Grade-R20+

2) Unoccupied Level Design

• Buried Wall-R10 (exterior if plain concrete)
• Buried Wall-R27 (if ICF construction)
• Exposed Wall-R40 (same as upper level walls if wood)
• Exposed Wall-R27 (same as above if ICF)
• Slab-on-Grade-R10

B.  FRAMED WALLS

• R40

C.  ROOF

• R60

D.  WINDOWS

• R3.5-R5

E.  DOORS

• R3-R13