Hawaii climate, wind & energy-code drivers
- ENERGY STAR climate zone: Southern — cooling-dominant, low SHGC priority (U ≤ 0.40, SHGC ≤ 0.25)
- IECC climate zone: 1A
- Maximum U-factor: 0.4 (IECC 2021 + state amendments)
- Maximum SHGC: 0.25
- ASCE 7-22 design wind speed: 130 mph (Risk Category II)
- Hurricane impact-rated requirement: Statewide ASTM E1996 large-missile impact-rated requirement
- Dominant residential frame material: Vinyl frame — dominant in most climates, lowest cost-per-window
- Historic-preservation overlay prevalence: Moderate — selected metro historic districts with review
- EPA RRP lead-safe trigger (pre-1978 housing share): Moderate — 20-40% pre-1978 housing share, EPA RRP required on selected replacements
Hawaii licensing, lead-safe & permits
- License status: Statewide license required
- License board: Hawaii Department of Commerce & Consumer Affairs — Contractors License Board (C-22a Glaziers / C-22b Building Trades / Carpentry) (official site)
- Permit: county building permit required for window opening modification; HI DCCA C-22a or C-22b license required statewide; mandatory hurricane-rated post-Iniki impact-resistant glazing on every Kauai residential window installation; mandatory anti-corrosion stainless-hardware specification on every coastal residential install
How window replacement costs vary in Hawaii
State-specific code or insurance rule: Hawaii Revised Statutes §444 imposes one of the most credential-segmented residential contractor licensing schemes in the country with a dedicated C-22a Glaziers specialty classification covering window installation, and Hawaii County (Big Island) Building Division separately requires Hurricane-Iniki-revised impact-resistant glazing requirements on every Kauai residential window installation since 1992 plus statewide Pacific hurricane wind-pressure rating compliance on every coastal exposure with 130 mph ASCE 7-22 design wind speed.
Cities in Hawaii
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Compare local window replacement pricing in Honolulu.
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