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ᐅ "Laminated glass 6 mm" or "P4A security glazing"

Created on: 10 Jul 2020 21:46
A
annab377
Original post
Hello everyone,
I now have two window quotes that have made it to my personal shortlist:
  • One is a Kömmerling frame with two rubber seals and 6mm (1/4 inch) laminated safety glass (VSG), and
  • the other is a Gealan frame with three seals, where the middle one is a fixed plastic sealing strip. I personally prefer this model because of the additional burglary protection and because it has three seals instead of two. Unfortunately, the Gealan is somewhat more expensive.

The average U-value of both windows is 0.81.

Now my question about the glass:
The Kömmerling profile specifies 6mm (1/4 inch) laminated safety glass for the ground floor windows, while the Gealan profile has P4A glazing. Are these equivalent or can they be compared? Does P4A stand for 4mm or something else? I even read online that you should opt for P5A+. Or is P4A or the 6mm laminated safety glass sufficient for RC2 hardware?

Unfortunately, we cannot install according to RC2 due to roller shutter boxes.

What do you think?
Thanks for your answers.

Here is a picture of the central sealing strip, which I find quite appealing (photo from gealan.de):

Cross-section of a window frame with insulated glazing, seals, and insulation gaps.
A
annab37713 Jul 2020 16:34
#13
hhmm okay, and as for burglary protection, since the mushroom head locks, is it basically just a marketing gimmick against prying?
Mycraft13 Jul 2020 16:49
#14
If you are still concerned about the sealing, yes, it does not provide any burglary protection.
11ant13 Jul 2020 19:12
#15
annab377 schrieb:

and as burglary protection, since the mushroom-head locks were introduced, it’s just a marketing gimmick to prevent prying open

The mushroom-head locks represent a genuine security improvement, not a marketing gimmick.
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