The use of PVC profiles is not recommended in large joints where, besides the fact that we have a large expansion coefficient, problems may arise when joining between the heel and the wall, between the heel and the movable sheet, even bending of profiles. The weight of these large joints must also be taken into account. If in aluminium, which is the easiest, the joint systems at the corners are mechanical, in PVC, the joint is by hot melting, but the steel reinforcement cannot be welded.
Also, it is not recommended to use PVC joinery profiles in the case of exterior doors for heavy traffic, interior doors, or glazed interior compartments. Choosing the material variant is quite complicated; there are special cases, so we recommend the advice of a specialist.