Uf, Ug, Uw and Ψ: what window thermal transmittance values mean
How the frame, glass and whole-window coefficients differ, how they are calculated to EN ISO 10077-1 and why the spacer can decide whether a window meets the code.
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Blog
Practical articles on aluminium systems, facades, energy efficiency and standards — for developers, architects and private clients.
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DBN, DSTU and EN standards for windows and facades: a short guide
Which codes set requirements for glazed elements in Ukraine, what the classes in a declaration of performance mean and what to check in a supplier’s documents.
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