The window manufacturer near us recommends this manufacturer as particularly good in terms of security (counter-rotating locking system with several mushroom-head pins + stable profile frame) and foiling (no blistering due to extra coating etc.). Does anyone of you have personal experience with this manufacturer? Many thanks in advance for your professional opinion
The most important thing I can tell you as a professional (I like to count myself among the pros, but never among the "experts") is this: professionals merely have — of course, depending individually on competence — a more well-founded idea
, but their opinions
are never more objective than those of ordinary mortals. As far as the installer is concerned, keep in mind that he is at least as decisive for the overall quality as the "hardware" product — weigh his statements accordingly
(but keep the preliminary remark in mind). If it is to be colored plastic, I gladly recommend Gealan because of the co-extrusion. Whether they have licensed Gayko or Gayko has a similar proprietary process is unknown to me. I was a manufacturer of aluminum windows and later a dealer (then for windows of all materials). There are only a few real manufacturers, and they often do no direct customer business, at least not for small customers. Licensing and white label production for dealers, on the other hand, is common. I do not personally know Gayko (since no dealer needs all brands), but I suspect them to be a real manufacturer (although not a relevant competitor for us). Mushroom-head locks have long ceased to be an innovation and should be standard on the ground floor and in areas easily reachable by ladder.
We are currently renovating a house from the 1980s and need to replace the old windows, among other things. There are also 2 extensions. One extension consists entirely of glass + sliding windows; aluminum windows were quoted for these.
As information about your property, this is by far not enough to create a tender for you (which would be decidedly too much for a public pro bono consultation). Therefore, only generally: renovation needs are regularly misjudged in both directions by laypeople. In my experience, I am correct well over 70% of the time, initially leading a homeowner (or prospective buyer) to doubt this self-diagnosis. Above all, on which parts the money should be most urgently spent, the half-knowledge collection aka the internet often leads down the wrong path. “Aluminum only” is, from my materials science point of view, the royal road, but one that usually only top taxpayers can consistently follow. Therefore, I recommend the average builder the mix "PVC for the bulk of the elements, aluminum for the category of stress elements." By the way, the wood/aluminum combination is always more expensive with reputable manufacturers than pure aluminum (compare probably about seven dozen hits for posts I wrote with the terms "wood-aluminum" or "wood/aluminum" in the forum search here). Incidentally: many windows do not require a full replacement, but only replacement of the seals and glazing units; and an installation other than with orgies of construction foam and strip gluing is a battle with considerable dirt and destruction potential. So, that’s it now — the next person who asks a window question without having previously described their property comprehensively will get three black marks in their Nikolaus file! (You really can’t just blurt out "manufacturer good or bad," that’s not how it works, and certainly not from a blind crystal ball.) Whether money, tuition money, or wasted money — at least the (as said, often unnecessary) full replacement always requires a digestif for the total figure at the bottom.