PVC and Aluminium Window Companies on the Costa Blanca

PVC is the usual choice when insulation and price matter most: multi-chamber frames keep heat out in summer and in during winter. Aluminium suits large panes, slim modern frames and big sliding doors, but on the coast it should have a thermal break (rotura de puente térmico, RPT). Either way, ask which profile system and series the quote is based on, such as a Kömmerling, Veka, Cortizo or Technal system, so you can compare like with like.

The glass matters as much as the frame. Double glazing with a low-emissivity coating and a solar-control layer keeps rooms cooler in August and warmer in January. Ask for laminated safety glass in doors and low panes, and acoustic glass if you are near a busy road. Near the sea, aluminium should have a coastal-grade finish such as Qualicoat Seaside, and hardware and screws should be stainless or coated.

A good quote lists every window with its size, opening type, profile, glass and colour, and says whether it covers removing the old frames, fitting, sealing, making good and IVA. Ask whether the roller-shutter boxes and mosquito nets are included, who does the measuring and fitting, how long the company needs from order to installation, and what the warranty covers.