-- The Home Page of the Finishing Industry
  HOMEFAQsBOOKSHelpWantedAdvertiseContactFORUM Letter 23791

The Hotline: Serious Education ... plus the most fun you can have in metal finishing. Ted Mooney, Webmaster

How to preserve shiny copper roof appearance?


Q. Is there a way to keep a copper roof from oxidizing at all? I.e., is there any way to keep it in it's shiny copper-metallic appearance instead of turning green over time?

James Hurst
- Monroeville, New Jersey


A. A clear coat should do the job.

Simon Dupay
- Roseville, Minnesota


A. Just any "clear coat" will not do the job, as most of the darkening of copper (in its initial stages) occurs due to exposure to UV rays in sunlight. At a minimum, the clear coat should contain a UV inhibitor and an under-film corrosion inhibitor. There are a few that are made (and have been tested) specifically for use on copper (and brass), but due to having to be non-commercial in my reply, I cannot mention the brand names. Regardless of which brand used, keeping the copper shiny will eventually become a maintenance issue, especially if it is an outdoor item. There truly is no "permanent" solution to this problem - but only having to deal with it every 8-12 years is better than year-in, year-out.

John Steins
- Brevard, North Carolina

Ed. note: letter 25188 has additional info/specs on clear coats for copper.

Brass lacquer


Q. I am putting in a bar in and I'm going to put down a pure copper sheet below a thick piece of glass but there are finger prints on it and I can't figure out how to clean it.

Genevieve Evans
confused and in need of help - Eagle Point, Oregon


Q. I have a copper roof over a bay window (almost 5 years old). I would like to restore it back to its original color and shine. Is there a product that will do this? I've tried Brasso [linked by editor to product info at Amazon] and twinkle, neither works well. Also, after it is back to the original copper finish, is there a clear coating that I should use? Thank you.

Denise Thomas
consumer - Spotsylvania, Virginia

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It is not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & DevicesUsed & Surplus

©1995-2015     -    Privacy    -    Search