How can you tell good quality uPVC windows?
Check five things: a Class A profile under BS EN 12608, a Window Energy Rating of A or better, PAS 24 security testing, neat welds with smooth hardware, and a written guarantee from a Certass or FENSA registered installer. Price alone is not a reliable guide.
How can you judge quality in person?
- Corners should be cleanly welded with no gaps
- Sashes should close without forcing and sit evenly in the frame
- Handles and locks should feel firm, not loose
- Glass should be clear with no misting between panes
What should the paperwork show?
A Building Regulations certificate, the profile and glass specification, and a written guarantee that says who stands behind it and for how long.
Is a more expensive window always better?
No. Compare like for like on the profile, glazing, hardware and guarantee. See our uPVC windows. Jake at JMF Windows surveys every job himself, JMF is Certass registered, and its A-rated windows carry a 10-year guarantee.
What are the red flags when choosing an installer?
- Vague specifications or refusal to name the profile system
- No Building Regulations certificate or competent person registration
- No written guarantee, or one that excludes the glass
- Pressure to sign on the day
Thinking about new windows? Jake surveys every job himself, and our quotes are free, in writing and without obligation. We fit across Oxford, Kidlington, Bicester, Witney, Abingdon and the villages around. Call 01865 708464 or ask for a free quote.
