Urgent and collaborative industry reform is needed to shut out rogue operators and protect shared standards, says Apeer’s Asa McGillian.
The U-value scandal has exposed a deep fault line in the fenestration industry and fabricators are now standing directly on it. As evidence stacks up against door manufacturers who are falsely claiming thermal performance, a moment of reckoning is approaching.
This is no longer a niche compliance issue, it’s a systemic crisis of integrity. One that threatens not just individual businesses but the reputation of the industry’s entire supply chain.
Across the market, third-party tests are revealing discrepancies that should never have made it past a brochure. Some doors are being sold with U-values claimed as low as 0.7W/m²K – but actual testing has revealed values of 2W/m²K or even higher. Not only are these doors not compliant, in some cases they contain no effective insulation at all.
At the core of the scandal is a harsh reality: many doors currently in circulation simply do not meet the thermal standards they claim to. And for fabricators who sit between suppliers and installers, the stakes are uniquely high.
These failures not only breach regulations but could open the way for claims, fines and reputational fallout. All of which fabricators may get dragged into, even if the fault lies further up the chain.
Every fabricated unit that leaves a workshop carries a promise that it meets regulatory standards, that the performance figures are accurate, and that the materials used are up to spec. When that promise is broken the installer takes the immediate hit, but the damage trails back up the chain. Fabricators who supply installers with U-value data, passing on false or unverified claims even unwittingly, are the gateway for these performance claims reaching the market, making them a crucial control point for upholding standards and weeding out non-compliant products.
And how can we expect customers to care about U-values and thermal efficiency – how can installers sell our products, and expect people to want to upgrade their homes – when for all they know the door that they’re putting in is worse than the one they already have?
Once trust is lost in one product, it starts to poison confidence in others. That’s why this scandal isn’t something to observe from a distance, it’s something that demands action now, from every responsible fabricator.
The question is: how do we stop bad practice without turning the industry into a witch-hunt?
The answer lies in collective accountability, with fabricators uniquely placed to start turning the tide.
It begins with rigorous supplier vetting. Don’t just accept paperwork, challenge it. Ask for current, relevant third-party certifications, not legacy tests that don’t apply to the current or specific model. Understand the difference between actual performance data and calculated or simulated claims.
Good fabricators, working together, can isolate rogue operators by refusing to buy, sell or promote unverified products. Set your own standards. Be transparent with your clients about what you use and why. Make performance data part of your pitch and ensure it can be backed up if challenged.
Industry bodies, testing labs and certification schemes all have a role to play too. But they move slowly and fabricators don’t have that luxury. You can make decisions today that will influence what gets into the hands of installers tomorrow. And if we do this together we don’t just protect ourselves, we raise the standard for everyone.