Hurricane Resistant Sliding Glass Doors

Hurricane Resistant Sliding Glass Doors

minimal windows® 4+ is a certified system for creating hurricane resistant sliding glass doors within architect-led residential and commercial projects. The system combines triple glazing, large sliding panes and minimal 26mm sightlines with the robust performance required for hurricane-prone and high-wind regions.

Hurricanes expose buildings to extreme wind pressure, heavy rain and windborne debris. Sliding glass doors specified for these environments must remain securely in place throughout the storm while protecting the building envelope against impact and water penetration.

The minimal windows® 4+ system has been tested under the Florida Building Code for use in high-velocity hurricane zones, providing architects and specifiers with a verified solution for combining expansive glazing with hurricane resistance.

How Are Sliding Glass Doors Tested for Hurricane Resistance?

Hurricane testing evaluates whether a sliding door system can withstand the combined effects of wind pressure, driving rain and airborne debris.

During testing, the glass and aluminium framing are subjected to impact loads that simulate debris being projected against the façade during a hurricane. The complete door assembly is then exposed to cyclic pressure loading, recreating the repeated positive and negative wind pressures experienced throughout a severe storm.

Water-resistance testing is also carried out to assess whether water passes through internal surfaces intended to remain dry. These tests evaluate the complete assembly, including the glass, frames, seals and locking system, rather than considering the glazing in isolation.

The aim is to confirm that the door remains within its opening, preserves the integrity of the building envelope and continues to resist weather ingress under demanding conditions.

minimal windows® 4+ Hurricane Testing

The minimal windows® 4+ system has been designed and tested to meet the requirements of the 8th Edition Florida Building Code 2023, including high-velocity hurricane zones.

The system holds Florida approvals FL46776 and FL46854 and has been tested under:

• TAS 201-94: Large Missile Impact Test
• TAS 202-94: Uniform Static Air Pressure Test
• TAS 203-94: Cyclic Wind Pressure Loading

During large missile impact testing at 15.5m/s, the inner glass pane remained intact. Cyclic wind pressure testing reached 3510Pa, with no damage and more than 90% recovery. Static air pressure testing was completed at ±4500Pa, with no damage and a maximum deflection of L/160.

Water-resistance testing at 600Pa recorded no leakage onto internal surfaces designed to remain dry. Together, these results verify the ability of the complete sliding door assembly to respond to impact, wind pressure and water exposure.

Minimal Sightlines with Hurricane-Resistant Performance

The minimal windows® 4+ system maintains a 26mm interlock sightline, allowing hurricane-resistant sliding doors to retain the minimal appearance required for contemporary architecture.

Individual sliding panes have been tested at sizes up to 12m², 4.5m high and 1000kg. The system accommodates glass units between 50mm and 56mm thick, providing the depth required for triple glazing and specialist impact-resistant glass specifications.

The framing is fully thermally broken, with a typical Ug value of 0.6 W/m²K and project-dependent Uw values between 0.8 and 1.1 W/m²K. The system also achieves Air Class 4, Driving Rain Class E1050, Wind Class C5 and sound insulation up to 43dB.

This allows architects to specify large areas of floor-to-ceiling glazing without choosing between minimal sightlines and demanding environmental performance.

Glass and Configuration Options

Hurricane-resistant minimal windows® 4+ installations can be developed with a range of glass options according to the environmental and architectural requirements of the project.

These can include:

• Solar control coatings

• Low-iron glass

• Low-maintenance glass

• Laminated and triple-glazed units

• Heated glass

• Privacy glass

• Electrochromic glass

The system can also support linear, pocket and other bespoke sliding configurations. Pocket sliding doors are particularly useful where the architectural brief requires the moving panes to retract into the adjoining construction and maximise the clear opening.

Each installation must be specified around the required design pressures, impact classification, opening size, glass build-up and local building codes.

Specifying Hurricane Resistant Sliding Glass Doors

Hurricane-resistant glazing should be considered from the earliest design stages. The glass specification, supporting structure, frame reinforcement, drainage, seals, locking and installation method must be coordinated around the project location and required design pressures.

minimal windows® 4+ provides architects with a tested platform for creating large-format glazed elevations with minimal framing and verified hurricane resistance.

Designing a project in a hurricane-prone or exposed coastal location? Contact the minimal windows® technical team for advice on hurricane resistant sliding glass doors, impact-resistant glass specifications, large-pane configurations and Florida Building Code requirements.