Climate Zone 3C

Sunnyvale falls in IECC Zone 3C — requiring R-30 attic insulation and R-15 to R-21 for exterior walls.

Next-Day Available

Stocked fiberglass and mineral wool delivered to Sunnyvale as soon as the next business day from order confirmation.

Wholesale Direct

Buy direct at wholesale quantities — no retail markup. Same product, better economics for your project or crew.

No Deposit Required

Pay at delivery. We don't require a deposit to hold your order or confirm a delivery window.

What we deliver to Sunnyvale

Fiberglass Batts

R-11, R-13, R-15, R-19, R-21, R-30, R-38, and R-49. Available in standard and high-density. Ships to Sunnyvale in full pallets or mixed orders.

View Products

Mineral Wool Batts

Fire-resistant, sound-attenuating mineral wool for exterior walls, party walls, and mechanical rooms. Dimensionally stable — no sagging.

Mineral Wool

Bulk Orders

Multi-pallet orders for contractors, developers, and property managers. We coordinate freight so your crew isn't waiting on materials.

Bulk Supply

Sunnyvale insulation requirements.

Sunnyvale is a Silicon Valley tech hub in Zone 3C. IECC 2021 minimums for new construction:

Location Minimum R-Value Product
AtticR-30R-30 or R-38 batts
2×6 Exterior WallsR-20R-21 high-density fiberglass
2×4 Exterior WallsR-15R-15 fiberglass or mineral wool
Crawl Space / FloorR-19R-19 floor batts

Requirements vary by project type. Call us to confirm specs for your specific build.

Order insulation for Sunnyvale today.

Tell us what you need. We'll confirm availability and delivery timeline for Sunnyvale the same business day.