FAQ

What kind of insulation do polycarbonate sheets provide?

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The Ug-value (formerly called the K-value) indicates how much heat is transmitted through the sheet. The lower the Ug-value the better the material is able to keep heat in. The insulation value of polycarbonate sheets is largely dependent on the geometry of the sheets. Solid polycarbonate sheets have about the same Ug-values as glass of the same thickness. Multiwall polycarbonate sheets offer improved Ug-values down to 1.4 W/m²K. The best results are obtained with multiwall polycarbonate sheets that have a lot of intermediate layers with intricate geometric structures.

On the other hand, during summer one might be looking for a material that keeps the heat out as much as possible. In this case, the shading coefficient (SC), the visible light transmission (Tvis) and the solar energy transmission (Rsol) are the indicators that need to be examined. Ideally, one looks for a material that lets the light pass through (high Tvis), but keeps out the heat of the sunlight (low Rsol and low SC). The ratio between these two opposite properties is expressed as the selectivity index: a high selectivity index means a lot of visible light, but little heat passing through the sheets. All suppliers have special types of polycarbonate sheets that offer improved heat reflection during summer. The combination of good insulation both during summer and winter give these types of multi-wall sheets their unique properties.

Contact us to discuss your requirements of Polycarbonate Solid Sheet Suppliers. Our experienced sales team can help you identify the options that best suit your needs.