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When it comes to insulating pitched roofs and timber-frame structures, two products frequently come up in conversation: Isover Metac (well known in Ireland) and Isover Super-Mata 033 (widely available in Poland and across mainland Europe).
At first glance, they seem to be different. Different names, different markets, different price points. But are they really so different? Let’s take a closer, technical look.
Thermal Conductivity (λ-Value)
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Metac λ34: Declared thermal conductivity 0.034 W/m·K
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Super-Mata 033: Declared thermal conductivity 0.033 W/m·K
This means Super-Mata offers a slightly lower λ-value (better insulation per millimetre). On paper, this looks like a small difference — but it can add up across an entire roof.
Thermal Performance in Practice (200 mm Example)
The best way to compare is by calculating U-values for the same thickness:
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Metac (0.034 W/m·K)
R = 0.20 / 0.034 ≈ 5.88 m²·K/W
U = 1 / 5.88 ≈ 0.17 W/m²·K -
Super-Mata (0.033 W/m·K)
R = 0.20 / 0.033 ≈ 6.06 m²·K/W
U = 1 / 6.06 ≈ 0.165 W/m²·K
➡️ Result: Super-Mata achieves a slightly better U-value at the same thickness.
Both, however, comfortably meet modern energy-efficiency standards.
Acoustic Properties
Both products are made from glass mineral wool with similar density and fibre structure. In practice, this means comparable sound absorption performance.
For internal partitions or pitched roofs, either material will significantly reduce airborne noise.
Fire Safety
Both Metac and Super-Mata achieve Euroclass A1 fire rating (non-combustible).
This means they can be used safely in both residential and commercial applications, without contributing to fire spread.
Handling & Installation
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Supplied in rolls only
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Easy to cut with a sharp insulation knife
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Flexible enough for friction-fit between rafters and studs
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Low dust release compared to stone wool alternatives
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Compressed packaging makes storage and transport easier
Both are installer-friendly and designed with efficiency in mind.
Price & Availability
And here’s where the real difference lies:
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In Ireland and the UK, Metac is well known but often comes at a premium price.
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Super-Mata, available from Poland, is essentially the same class of product, but usually at significant savings — often up to 30% cheaper when ordered through ShopFromPoland.com.
With VAT and delivery already included in the online shop price, it’s a fuss-free way
to access the same quality insulation without overpaying.
Conclusion
Isover Metac and Isover Super-Mata are extremely similar products:
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Same intended use
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Very close thermal performance
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Same fire classification
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Comparable acoustic behaviour
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Both installer-friendly
The biggest difference? Price and distribution channel.
For Irish builders and self-builders, Super-Mata represents a smart opportunity:
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Same quality, same certification
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Delivered directly from Poland
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Often 30% savings or more compared to local Irish retail
💡 Why pay more for the same insulation performance?
Explore Isover Super-Mata now at ShopFromPoland.com and see how much you could save on your project.