Blog
Everything you'd want to know before signing a quote for windows and doors: materials, regulations, costs and tax incentives.
01 Apr 2026 Mirko Vanzo
PVC, aluminium or wood? Double or triple glazing? Which certifications should you check? The complete guide to choosing windows without mistakes.
01 Apr 2026 Mirko Vanzo
The window and door supply chain explained: manufacturer, wholesaler, intermediary and retailer. Who does what, where margin is created and where it's eroded, and how many steps there are.
28 Mar 2026 Mirko Vanzo
Large full-height panoramic sliding glazing: minimal frames, why aluminium is needed, glass weight, insulation, solar shading and indicative prices.
25 Mar 2026 Mirko Vanzo
The typical mistakes and red flags when choosing a window and door supplier, from someone who has lived through them: price, CE/DoP, lead times, spare parts, support.
21 Mar 2026 Mirko Vanzo
How to order custom-made windows and doors without mistakes: from first contact to the site survey, from product selection to order confirmation, through to lead times and delivery.
18 Mar 2026 Mirko Vanzo
How to negotiate terms and volume discounts with a window and door manufacturer: real leverage, tiers, what a manufacturer actually assesses, and why the lowest price doesn't win.
12 Mar 2026 Mirko Vanzo
PVC or aluminium? Technical and economic comparison: insulation, durability, design, price, maintenance. No magic promises.
07 Mar 2026 Mirko Vanzo
Which windows for a passive house, class A and nZEB: indicative target Uw values, 82+ mm profiles, triple glazing, warm-edge spacers, air tightness and Passivhaus certification.
04 Mar 2026 Mirko Vanzo
What delivery times for windows and doors actually depend on, how to plan orders so sites don't stall, and what to ask your supplier.