High wind zone certificates

Meet required testing standards

New building permits usually state the wind zone a building is located in or whether special construction requirements need to be met, such as maximum window and door water tightness, impact resistance, or strength for storms and hurricanes.

At Neuffer we have supplied windows and doors for numerous projects across New Zealand, the US, and Canada.

We know the markets and stay up to date with current regulations.

This is why our bestselling aluclad timber windows and French doors, Eco Plano and Idealu, are certified to comply with New Zealand's NZS 4211: 2008 specification for high wind zone performance, including 2022 updates.

Further timber and aluclad timber windows and doors are currently undergoing testing with high wind certificates available soon.

In terms of hurricane suitable products, our CS 77 aluminium window, Hi-Finity and CP 155 lift and slide patio doors are then Miami Dade, Florida certified (NOA No.18-1226.01 [13.08.25]).

To effectively balance pressure between inside and out during high winds and storms, just the right amount of air leakage or air infiltration needs to occur through windows and doors. A smoke test is therefore carried out and values are collected.

Furthermore, during storms much rain is blown onto windows at high pressure due to strong winds. Water test pressures and wind pressure limitations are therefore measured by determining the maximum pressure or wind speed where water still drains effectively from the door or window.

To further ensure that all parts of windows and doors will perform under high pressure, a maximum operating force test is carried out, focused on fittings. This test also reveals the product’s ease of operation during normal weather conditions and its suitability for those with accessibility needs.

In terms of deflection and ultimate strength, window measurements are then carried out via rapid cycles of positive and negative pressure to determine impact resistance and safety.