01
On the rack
R-values — R-11, R-13, R-19, R-21, R-30, R-38
Widths — 15", 16", 23", 24" on-center
Facing — kraft-faced and unfaced
Stocked
Insulation & Spray Foam · 1 of 7
Thermal Batt Insulation
The R-values Colorado's code actually asks for, in the widths that fit the framing you have.
OUTWEST1995Five Colorado yards.
One outfit.
02
Matching the R-value to the wall
A 2×4 wall takes R-13 or R-15. A 2×6 takes R-19 or R-21. Ceilings and attics run R-30 and R-38. Which one the code wants depends on your climate zone — most of Colorado is 5B or 6B, the high country is 7 — and on whether the assembly has continuous insulation outside the studs. Send us the wall section and we will tell you what passes.
03
Manufacturers
Johns Manville · Knauf Insulation
Knauf: stocked in Glenwood Springs and Durango, with branch transfer available to the other yards.
Common questions
Ask the counter.
Faced or unfaced?+
Faced on the warm side of an exterior wall where you need a vapor retarder. Unfaced for interior walls, for sound, and for the second layer where two layers are stacked.
What R-value do I need in Vail?+
Eagle County is climate zone 6B, not 7 — that one catches people at 8,150 feet. Under the 2021 IECC the wood-frame wall is the same as a Grand Junction job: R-30 in the cavity, or R-20 plus R-5 continuous, or R-13 plus R-10. What changes is the ceiling — R-60 in 6B against R-49 in zone 5. Confirm the adopted code edition with the building department; Colorado moved the statewide requirement twice in three years.
Do you deliver insulation with the board?+
Yes, same truck. Tell us when you order and we will stage it so it stays dry.
The branch makes the call