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Maui County, HI Hurricane Preparedness: Hurricane Shutters (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Maui County Code § 16.08A.R301.2.1.2
Standard required
ASTM E 1996 / E 1886 impact glazing
Alternative
7/16-inch wood panels, max 8-ft span
Wind design basis
Up to 130 mph, 33-ft roof height
Safe-room exception
R-3 buildings with an R325 safe room

Summary

Maui County's residential building code requires windows in windborne-debris regions to have impact-resistant glazing protection meeting ASTM E 1996 and E 1886 standards, under section R301.2.1.2. As an alternative, code-compliant 7/16-inch wood structural panels, precut and fastened per a set spacing schedule, satisfy the requirement on one- and two-story buildings.

These county ordinances apply to unincorporated areas of Maui County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

R301.2.1.2 Protection of openings. Windows in buildings located in windborne debris regions shall have glazed openings protected from windborne debris. Glazed opening protection for windborne debris shall meet the requirements of the Large Missile Test of an approved impact resisting standard or ASTM E 1996 and ASTM E 1886 referenced therein. ... 1. Wood structural panels with a minimum thickness of 7/16 inch (11.1 mm) and a maximum panel span of 8 feet (2438 mm) shall be permitted for opening protection in one- and two-story buildings. Panels shall be precut so that they shall be attached to the framing surrounding the opening containing the product with the glazed opening. Panels shall be secured with the attachment hardware provided.

Full Breakdown

2 of the Maui County Code amends section R301 of the International Residential Code. The rule requires that windows in buildings located in windborne debris regions have glazed openings protected from windborne debris, meeting the Large Missile Test of an approved impact-resisting standard, or ASTM E 1996 and ASTM E 1886. 5, qualify as opening protection on one- and two-story buildings. 2 in the same amendment sets a specific fastening schedule for those wood panels, keyed to panel span and fastener type, using No. 6 or No.

8 wood screws spaced from 9 to 16 inches depending on the span. Attachment under the table is permitted for buildings with a mean roof height of 33 feet or less where design wind speeds don't exceed 130 mph. A second exception lets Occupancy R-3 buildings designed as a partially enclosed structure skip the glazing protection if the building instead has a residential safe room built to section R325 standards, capable of resisting a 160 mph three-second gust.

Violations & Fines

Skipping required opening protection in a windborne-debris region is a building-code violation enforced by the Department of Public Works' Development Services Administration through the standard building-permit and inspection process; noncompliant construction can be red-tagged, denied a certificate of occupancy, or ordered corrected before final inspection, and reconstruction after a storm without meeting section R301.2.1.2 exposes the owner to the same permit enforcement and stop-work authority applied to any other building-code violation.

Frequently Asked Questions

Do Maui homes need hurricane shutters or impact windows?
Yes, in windborne debris regions. Section R301.2.1.2 requires glazed openings to be protected from windborne debris to ASTM E 1996 and E 1886 standards, though homeowners can instead use 7/16-inch wood structural panels sized and fastened to the code's Table R301.2.1.2 schedule on one- and two-story buildings.
Can plywood panels substitute for impact windows in Maui County?
Yes, on one- and two-story buildings. The code allows wood structural panels at least 7/16 inch thick with a maximum 8-foot span, precut to the opening and fastened per Table R301.2.1.2, as an alternative to ASTM-rated impact glazing under section R301.2.1.2.
What wind speed do Maui's window protection standards design for?
The fastening schedule in Table R301.2.1.2 is based on 130 mph wind speeds and a 33-foot mean roof height; attachment under that table is only permitted within those wind-speed and height limits, with engineered solutions required above them.

Sources & Official References

Other rules in Maui County

All Maui County rules

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