ᐅ Window Color RAL 9005 and Garage

Created on: 9 Jan 2021 20:41
A
Aquarella87
Hello everyone.
Does anyone have black matte exterior windows and can share their experience? We want to have dark windows with a matte finish. The RAL 7016 color looks too blue to me personally, so we are considering something different. We also want the garage door in this color (from Hörmann). The advisor mentioned that this color is rarely sold, which made us a bit uncertain. The garage door in black is only available in a glossy finish, not matte—would that still match?
I would be very grateful for any experiences you can share.
Tolentino28 Mar 2022 11:31
If you are unlucky, black anodized aluminum will turn golden or copper-colored.
Nixwill28 Mar 2022 11:46
I looked online for some example pictures. These are definitely extreme cases and certainly not ideal examples, but they help illustrate what I mean by uneven fading.

Large gray metal garage door with horizontal panels in front of an exterior wall.


Closed gray metal garage door in front of a white house wall, with a downpipe visible on the side.


As mentioned, this is quite extreme, but these kinds of discoloration patterns worry me. The lower door is probably DB703, powder-coated, and less than 10 years old 😱.
Tolentino schrieb:

If you’re unlucky, black anodized aluminum can turn golden or copper-colored.
Okay! So that’s not an option either 😕.
Tolentino28 Mar 2022 11:48
White is actually the least problematic. I also suspect that the risk increases the darker the color is. So a light silver or light gray could probably still last relatively long...
11ant28 Mar 2022 12:00
Nixwill schrieb:

We planned wood/aluminum windows, but RAL 9005 is really deep black, [...] I am almost certain that with strong sunlight you could actually fry an egg on it. Can a wood/aluminum window handle that over time?
Nixwill schrieb:

Yes, I remember the problems with DB703 from my previous company. Every powder coating manufacturer really looks completely different when you lay the sample pieces side by side—you wouldn’t believe they are all supposed to be DB703.
Nixwill schrieb:

Does anyone know how anodized aluminum behaves in this regard?

A wood/aluminum or PVC/aluminum window probably handles this better than a foil-coated PVC window. But in general, having a very dark (= strong temperature fluctuations) surface color puts stress on the material. DB colors are essentially RAL colors (just from the palette of the major customer Deutsche Bahn), and regarding RAL, I have said about a dozen times that RAL is not Pantone (legally speaking, it only standardizes the effort, not the success). Based on my experience, anodized aluminum (electrolytically oxidized aluminum) is color stable—however, as a window manufacturer, I never had business relations with anodizing plants because at the time zero percent of anodized surfaces were sold; even as a dealer, I never dealt with them. Your mention of frying an egg, though, makes me wonder—I have never heard of Teflon coatings for building elements before ;-)

Personally, for garage doors, I would always consciously choose a clearly intentionally harmonizing but not identical color (so better to select three RAL shades next to each other) or set a color accent (possibly matching the front door); for example, using petrol instead of just bluish (or 11ant yellow).
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Tolentino28 Mar 2022 12:20
Tolentino schrieb:

If you're unlucky, black anodized aluminum can turn a golden or copper color.

Sorry, I attributed my experience incorrectly here; this happened with powder coating. Anodizing should actually be more durable...
M
Myrna_Loy
28 Mar 2022 12:26
The problem with deep black is that any change to the surface causes light to reflect, so it no longer appears truly deep black. Outdoors, all surfaces change over time, and the darker the color, the faster this happens.

There are reasons why black paint has been very rare on exterior surfaces. In England and the Netherlands, you can find high-gloss black paint on doors and windows of historic houses. These are usually oil-based paints that are refreshed every few years with varnish.