I have to choose between Kömmerling and Aluplast profiles (our fabricator offers either) for the uPVC windows I am getting.
The fabricator says that they both have the same performance. The samples I have seen both looking equal from a visual appearance perspective, except that the Aluplast has the option of grey seal and silver spacer (which I prefer) rather than just black. The Aluplast ones are slightly cheaper to due to a promotion. However, I have heard positive reviews of Kömmerling but do not know anything about Aluplast.
Is anyone with experience or knowledge of Aluplast profiles able to give a review or other information?
Also, what should I be looking for when evaluating uPVC profiles?
Thanks!