Ask the expert: what kind of glass should I choose for my window?
You can get that glass is more insulated?: https://www.houzz.es/ideabooks/98626784/list/pregunta-al-experto-que-tipo-de-vidrio-elijo-para-mi-ventana
Other posts of interest
https://www.vintageandchicblog.com/2011/06/75m-loft-35m-terr...
Quin canvi més increïble: ...