[MassHistPres] Fwd: Experience with copper trim cleaning on 90 year old building

[sally milne]

> Begin forwarded message:
> 
> From: sally milne <urbanosally at gmail.com>
> Subject: Experience with copper trim cleaning on 90 year old building
> Date: October 23, 2025 at 12:57:49 PM EDT
> To: "MassHistPres at cs.umb.edu" <masshistpres at cs.umb.edu>
> 

> 
>  The above bank was built  after a bank on the site burned down (1912) this was the replacement. It is now the Harwich Town Hall.
> It was built to impress and contains decorative white marble as accents. Cornice and munitions between windows are heavy gauge copper. The roof was slate with with copper rolls and and flashings.” All the conductors on the outside of the building are heavy gauge copper”
>       MY QUESTION:  By now the copper trim, especially that at the edge below the roof, have tarnished and bled  blue copper  stains onto the marble. The building has lost its visual in so many ways. What or who  is available to clean/restore  the copper and the stains to marble, if anything?
> Appreciate any experiences you may have.
> 
> Sally Urbano
> Harwich
> Individually
> 
> 

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