Quality You Can Prove: The Power of In-House Testing at Thermoseal Group

At Thermoseal Group, we’ve never been content with just meeting the minimum. When it comes to the performance of our IGU components, we’ve always believed in doing things properly - and that means putting every product we make through its paces before it reaches our customers.

That’s why we established our own in-house laboratory. While many of our competitors still rely on external testing facilities, we’ve brought quality control, material analysis, and performance testing in-house, complete with a polymer chemist to run the testing.

But why would go to this additional expense, when we could just do what our competitors do? Because we believe our customers deserve complete transparency, and products they can depend on.

Inside our lab, every product - be it a spacer, corner key, or hot melt - is tested thoroughly to ensure it lives up to the demands of real-world application.

For example, with our hot melt, we run solvent extraction using a Soxhlet station to check for anything that might leach out of our materials. That means we can pinpoint any unwanted impurities before a product ever goes to market.

We also use gas chromatography-mass spectrometry (GCMS) to examine its chemical structure which allows us to see exactly what’s in a formulation, how many components are present, and in what concentrations.

To back that up, we measure hot melt density to make sure our customers receive the correct volume per block or drum - no guesswork involved.

But we know that testing in a controlled lab environment doesn’t replicate the real-world.

That’s why we simulate long-term performance using tensometers to test adhesion strength after weathering, UV exposure, and water immersion. We even age our test units in-house so we can see how they perform after seven days immersed in water, or after prolonged exposure to different environments, for example.

The result? We don’t just test against standards like EN1279 - we prepare our products to exceed them.

Having everything under one roof means we can react faster, develop better, and offer full traceability. There are no delays waiting on external labs, no compromises on quality, and no blind spots. It’s this level of control and accountability that allows us to deliver the consistency our customers expect, and it’s something we’re extremely proud of.

For us, an in-house laboratory isn’t just a box-ticking exercise. It’s an essential part of what makes us different. It’s how we prove, every day, that quality isn’t just a promise; it’s a process.

For more information on how Thermoseal Group’s experienced team can support your business, visit www.thermosealgroup.com or call 0121 331 3955 to speak to an expert.