Silo 3
The whole cavity and the whole envelope. Batt, mineral wool, rigid, blown cellulose, and spray foam — on the shelf, not drop-shipped.
OUTWEST1995Five Colorado yards.
One outfit.
Keep moving
SWD Urethane, open cell and closed cell, with Yeti and Yeti XL on the closed-cell side. Sets and drums on the floor at all five yards, not drop-shipped from three states away when the rig is already booked for Thursday. Most drywall suppliers do not carry foam at all; the ones that do carry it as a special order.
Most of the state is climate zone 5B. Eagle, San Miguel and Archuleta counties are 6B — so Vail and Telluride, which people usually guess wrong. Pitkin, Summit, Routt and Gunnison are zone 7. Under the 2021 IECC the wood-frame wall is the same in all three zones; what steps up is the ceiling, R-49 to R-60. Which edition your jurisdiction is on is its own question, and it is the single most common thing we get asked to check. Send us the wall section.
Cavity insulation — Fiberglass batt, mineral wool, or spray foam, depending on the depth and the R-value. This page
Continuous insulation — Rigid polyiso or XPS outboard of the sheathing, where the code now wants it. This page
Air and water-resistive barrier — Behind the cladding, and the reason the insulation performs. Waterproofing & Sealants
Vapor retarder — Warm side, in Colorado. Husky poly with the fasteners supplied from Tools & Fasteners. This page
Acoustical batt — At rated, demising, and party walls. This page
Mineral wool safing — The perimeter joint between slab edge and curtain wall. This page
Plates, pins, and fasteners — For holding rigid board to sheathing. Tools & Fasteners
Five of the seven on this page. The envelope is one decision, so it should be one order.
Johns Manville · Knauf Insulation · Rockwool · Rmax · Atlas Roofing · SWD Urethane · GreenFiber · Husky
All five yards. If yours is short a size, it usually comes over from another the same day — most transfers land in two to four hours.
Cellulose moves heaviest out of Montrose, but it is on the shelf everywhere.
Common questions
It depends on the climate zone and whether the assembly has continuous insulation. Zone 5B, 6B, and 7 all differ. Send the wall section or use the calculator.
Rigid polyiso — Rmax and Atlas EnergyShield — and XPS, all stocked. Send us the wall section and the required R-value and we will tell you the thickness.
Yes. GreenFiber, and we move a lot of it through Montrose.
The branch makes the call