Tag: glazing — Page 2

The Uw value is the single most important number on a window quote — it tells you how much heat the whole window lets through. This guide explains Uw versus Ug and Uf, what the units mean, the target figures for each Spanish climate zone, how it ties into CTE rules and grant eligibility, and why in hot regions you must read it alongside the solar g-value.

Argon is the invisible upgrade hiding inside good double glazing — a heavy, inert gas that quietly improves insulation, comfort and condensation resistance. Here is what argon actually does between the panes, how much it changes the Uw value, whether it is worth paying for in Spain's heat as well as its cold, and how to verify it is really in your quote.