Knowledge from practice

Practical knowledge for better windows, doors and quotations

Technical guides, sales practice and concrete advice for window, door and sliding-system manufacturers and dealers.

Comparison of tempered and laminated glass

Window & door technology01.09.2026.

Tempered vs Laminated Glass: What Should You Offer?

“Safety glass” can mean different things in practice. Tempered and laminated glass address different risks, and the right choice affects safety, quotation accuracy and production planning.

Window & door technology20.05.2026.

HST, PSK and conventional sliding systems: what is the difference?

Not every “sliding door” is the same. HST lift-slide, PSK tilt-slide and conventional sliders differ in mechanism, sealing, threshold design, possible sizes and everyday feel.

Window & door technology06.05.2026.

PVC, aluminium or timber: what are you really choosing when you choose a window?

Frame material matters, but it is only one part of the decision. Profile design, glazing, hardware, size, opening type and installation together determine how a window performs for years.