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 coefficient？Aluminium is double that of glass and PVC is seven times greater. As a result, pultruded FRP frames do not distort due to thermal variations.

Pultruded fibreglass is virtually impervious to moisture, and therefore does not rot, warp, crack or twist. Pultruded profiles fibreglass is unaffected by chemicals or salt air, and is therefore suitable for coastal locations. As pultruded FRP profiles are dimensionally and hydroscopically stable, they are a good base for sophisticated finishing systems.

Initial capital expenditure is higher than for PVC, aluminium or timber windows. However, a whole life cost study conducted by the Building Research Establishment concluded that over a 30-year period, pultruded FRP was more economical than PVC.