Rocklin, CA: Climate Zone, Risk and Window Requirements

Rocklin sits in IECC climate zone 3B, which sets the energy-performance bar for any window installed here. Below that, a short list of Rocklin's longest-licensed window contractors can turn a spec into an actual installed window.

Licenses checked September 30, 2026 · California Contractors State License Board

3BIECC climate zone · ENERGY STAR North-Central zone

Rocklin's climate zone, in plain terms

That load is the actual argument for paying up for a better U-factor in Rocklin, separate from anything a brochure claims.

Zone 3B's requirement is the floor; Rocklin's specific load is what tells you whether beating that floor is worth the extra cost.

Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 9.1 mi away.

What FEMA's risk data says about Rocklin

FEMA scores Placer County's winter-weather risk as Relatively Low and its flood risk as Relatively High.

Winter risk in Rocklin weighs on U-factor and condensation resistance; flood risk weighs more on sill height and drainage detailing than on the glass package.

Treat these as two separate conversations with a Rocklin contractor, not one.

Strong wind: Relatively Low
Winter weather: Relatively Low

Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).

Guides to finish before Rocklin window bids come in

How to Read an NFRC Window Label Four numbers on one sticker decide most of a window's real-world performance. Here's what each one means.
ENERGY STAR Window Criteria by Climate Zone ENERGY STAR splits the country into four zones, each with its own numbers. Here they are, and why the Northern zone works backward from the other three.
Impact Windows vs. Shutters in Florida's Hurricane Zones Florida gives homeowners two paths to a protected opening. Here's how each one is tested, and where the HVHZ raises the bar further.

Rocklin's longest-licensed window installers

Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.

Pacific Erectors INCWindow and glass contractor · licensed 37 years · 95677Verify license
Impressive Exteriors WindowsWindow and glass contractor · licensed 34 years · 95677Verify license
Blane's Window & ScreenWindow and glass contractor · licensed 34 years · 95677Verify license
Brothers Home Improvement INCWindow and glass contractor · licensed 31 years · 95765Verify license
Daleuski's Custom GlassWindow and glass contractor · licensed 18 years · 95677Verify license
Neighborhood GlassWindow and glass contractor · licensed 18 years · 95677Verify license
Pro Superior Construction INCWindow and glass contractor · licensed 13 years · 95677Verify license
Cavolt And Sons Glass And WindowsWindow and glass contractor · licensed 12 years · 95677Verify license
Econo Glass & SashWindow and glass contractor · licensed 11 years · 95765Verify license
Rocklin Glass And Mirror INCWindow and glass contractor · licensed 8 years · 95677Verify license
Nathan Ramos WindowsWindow and glass contractor · licensed 8 years · 95677Verify license
High Quality Glazing CorpWindow and glass contractor · licensed 7 years · 95677Verify license

More California climate pages

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