What gives a window
Water Resistance?

When considering Water Resistance and air infiltration the design of the weather seal plays an important role.

The weather seal is the common name for either compression seals or sliding seals which are designed as part of the window.

Compression seals are generally used in projected windows, casements, pivoted windows, and others.

Sliding seals are generally used in hung windows and sliding windows and doors. Furthermore, these products often have additional features designed into the sill, which allow for the collection and drainage of water.

One solution to solving water infiltration problems is proper product selection. The other is to address all site specific requirements and the correct window installation.

Water can easily be forced through cracks and holes around the window and door installation from pressure generated by wind. Testing has shown that water can easily enter voids in the seals, nail holes, and other cracks with no pressure at all.

This is why it is important to follow the installation procedures completely and conduct a thorough check of the finished work.

Windows and doors have traditionally been considered the weak spot in the wall when it comes to comfort and energy consumption.

Many options, however, are now available from Green Energy Windows which improve a windows energy performance.

Learning how windows lose and gain heat allows one to choose the right window for a particular requirement.

The three main ways that a building’s energy is transferred through windows and doors is through Air leakage, Conduction and Convection, and Solar Heat Gain.

Water resistance test pressures have a direct correlation to the wind load design pressure that a product must withstand.

Improper product selection and/or installation can result in the infiltration of rain, which can causes damage, condensation and other problems.

Windows and doors are tested for water resistance by spraying the exterior surface with water at the rate of 19 litres per 0.1 square metre/per hour. This water application rate is equivalent to a rainfall of 200mm per hour. This is more rainfall per hour than a building anywhere in Australia is expected to face.

The test is conducted under a specified static test pressure. When applied to the window or door test sample, this static pressure simulates the load impacted to a product by the actual wind.

Wind pressure is what gives the rain its driving force. Static pressure test tends to force the water around the seals between the operating sash or ventilator and frame and through weep holes, creating the natural effects of driving wind s and rain.

Water is typically forced from high pressure areas into areas with lower pressure.

Water resistance testing is considered part of the necessary requirements to help you have confidence in our windows and of course, peace of mind.

Click Here to go to the quick and easy Quotation Form

Click Here to Ask a Question

Return from Water Resistance to Double Glazing