Yes. uPVC is not one standard product: profiles vary in wall thickness, chamber count, reinforcement and finish. BS EN 12608 classes them, with Class A needing visible walls of at least 2.8 mm and Class B at least 2.5 mm, according to profile manufacturer data.
What else differs between grades of uPVC?
- Number of chambers, which affects insulation and rigidity
- Steel reinforcement and corner weld quality
- Stabiliser and UV protection in the formulation
- Glass specification, spacer bars and hardware
How do I check the grade of a window?
Ask the installer for the profile system name, the BS EN 12608 class, the Window Energy Rating and whether the window has been tested to PAS 24 for security. A good supplier will have this to hand. See our uPVC windows. Wednesfield Trade Windows is a family-run firm fitting TruFrame windows, and as a Certass registered installer it certifies each job against the Building Regulations.
Does a higher grade cost more?
Usually, because thicker walls, more chambers and better hardware cost more to produce. Only a surveyed quote shows what you are buying, so compare quotes on identical specifications.
Thinking about new windows? We supply and fit uPVC windows across Wolverhampton and the surrounding area, and you deal directly with us, the owners. Call 01902 633355, message us on WhatsApp, or request a quote.