| Author |
Message |
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid
Post Number: 561
Registered: 10-2003
| | Posted on Thursday, September 24, 2020 - 08:08 pm: |    |
Have you used or evaluated these finishes for door hardware and similar applications? Do you like them? Benefits and limitations? Any good resources or product reps to explain them?
And how are we going to be able to keep our clients from confusing PVD and PVDF coatings?
Michael Chusid, RA FCSI CCS 1-818-219-4937
www.chusid.com www.buildingproduct.guru |
Brett Scarfino (Unregistered Guest)
Unregistered guest
| | Posted on Friday, September 25, 2020 - 11:42 am: | |
I am familiar with PVD and others, but not in this context.
PVD is a very generic term, just a process for applying a thin film. Says nothing more than the "coating(s)" were laid down as a vapor in a moderately high vacuum chamber. Sort of like saying "the paint will be sprayed on in a booth". IMO, hard to confuse a well recognized chemistry with a process (granted I do have pre-existing knowledge of both)
You might look into pyrolytic coatings on glass, as there might be similarities / overlap. |
Ed Storer
Senior Member
Username: ed_storer
Post Number: 63
Registered: 05-2009
| | Posted on Saturday, September 26, 2020 - 10:37 pm: | |
If you've used Low-E glass, the odds are that the coating was applied by vacuum deposition.
I've never heard of it applied to hardware, but the packaging for the residential hardware I've recently purchased did mention a coating to improve the longevity of the polished brass finish, so maybe it's the same thing - a very thin, very transparent finish with good resistance to handling.
Ed Storer, CSI Member Emeritus |
Alan Mays, AIA
Senior Member
Username: amays
Post Number: 222
Registered: 02-2003
| | Posted on Sunday, September 27, 2020 - 12:24 am: | |
My very first project in architecture 37+ years ago involved clear coated hardware. The existing building that was built was a US10 bronze finish. When the samples came for the new matching building of the complex, they did not match. The supplier was the same and he verified everything was right. While out on site we noticed a janitor was cleaning the door hardware and asked what he was using. He showed us what turned out to be an abrasive polish that had taken off the clear coat finish. To match the existing we had to change all the new hardware to US9 bronze finish. Be aware that clear coats can be polished by cleaning companies with what they use. Good resistance to handling, but cleaned to the point of damage to the finish. The client made changes immediately to the cleaning crews... |
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid
Post Number: 563
Registered: 10-2003
| | Posted on Sunday, September 27, 2020 - 06:04 pm: | |
Alan - Reminds me of a project early in my career when designer got a polished brass bug and wanted the finish on door and cabinet hardware, structural glass patch plates, hand rails, elevator cab doors, ornamental metal, decorative laminates, plumbing trim, light fixtures...
Not only did he want them to match color and finish, he wanted them to continue to match over the years. Some of the products had coatings and others did not and there were a variety of alloys.
The best I could do was to specify that products be supplied without coatings so they could all be be finished with a labor intensive hand polishing that could be repeated by building maintenance staff.
I did not have access to the building so do not know how well the finishes turned out or how it looks today. But I sure learned a lot brass alloys and finishes.
Michael Chusid, RA FCSI CCS 1-818-219-4937
www.chusid.com www.buildingproduct.guru |
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