Nanjing Xingya FRP Co., Ltd.

Pultruded fibreglass has a low coefficient of linear expansion which is very similar to that of glass. Other window materials have much higher coefficients – aluminium’s is double that of glass and PVC’s is seven times greater. As a result, pultruded FRP frames do not distort due to thermal variations.

As pultruded FRP profiles are dimensionally and hydroscopically stable, they are a good base for sophisticated finishing systems. Unlike that of PVC, the manufacture of FRP profiles is a sealed operation, and the release of gases into the atmosphere can be closely controlled.

This is generally low, because of the good thermal performance of FRP. As previously explained, the thermoset resins used in FRP are not easily recyclable, and may, in due course, steer the industry towards the use of thermoplastics.