Insights & News

Spain has an official standard for how windows must be fitted — UNE 85219:2023, 'Ventanas. Colocación en obra'. It defines the anchoring spacing, the three-plane perimeter joint and the vapour rule that stops condensation, yet almost no homeowner has heard of it. This guide explains exactly what the standard requires, with the real numbers, so you can tell a code-compliant installation from a shortcut.

Estimia

Aluminium is Spain's home-team window material — and the customs data shows why. Spain net-exports roughly $1.2 billion of aluminium extrusions and finished windows a year, shipping to France, the UK and Latin America, led by Galician giants like Cortizo. A full data report on the aluminium value chain, who makes it, the thermal-break problem, and where PVC is eating in.

Estimia

A full data report on windows and doors in Spain: the PVC value chain traced through customs data (resin, profiles, finished units), where Spain buys its profiles and ships its windows, the €4.16-billion domestic sector, the swing from aluminium to PVC, and the subsidy bottleneck holding back a 20-million-home renovation backlog.

Estimia

Headlines say homes must reach 'class E by 2030' or you won't be able to sell. That isn't what the law says — those per-home class rules were dropped from the final EU directive. Here's the honest version: what the EPBD actually requires of Spanish housing, why your windows still matter, and the one deadline that's genuinely real.

Estimia

The colder your climate zone, the lower the U-value the building code demands — and the pricier the glazing. Here's how window costs change across Spain to meet the code, why poorly rated regions face the most renovation pressure under the EU's energy rules, and how the 40% deduction changes the maths before it expires at the end of 2026.

Estimia

Spain's income-tax deductions pay back 20%, 40% or even 60% of an energy-efficiency upgrade — and window replacement qualifies. But for homes the clock runs out on 31 December 2026. Here's exactly which tier you can claim, what each one requires, the certificate trap that disqualifies most rushed jobs, and how to estimate your refund.

Estimia