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From: Patricia Redden <predden**At_Symbol_Here**SAINTPETERS.EDU>
Subject: Re: [DCHAS-L] Is lead sheeting a source of lead dust? And-Chemical Exposure question...
Date: Jul 26, 2019 23:24 UTC
Reply-To:
ACS Division of Chemical Health and Safety
In-Reply-To: Re: [DCHAS-L] Is lead sheeting a source of lead dust? And-Chemical Exposure question...
Beautiful Dreamer, List to my song.
All the ground around buildings with lead roofs and lead/copper sheeting is usually high in lead. I know from the building restoration projects I've been involved in. And there was a big move a few years ago to continue to install lead roofs because they were what was here originally. Bad idea. There are now stainless steel roofing materials that will last MUCH longer and don't release anywhere near the amounts of metals and no lead.
One of the reason they have to replace the lead roofing and flashing every 30 years or so is it has corroded way in spots or has thinned. Where do you think that lead went?
And the restorers on these projects do NOT publish the data on the soil around the building. But I've seen it.
Monona
-----Original Message-----
From: Peter Zavon <pzavon**At_Symbol_Here**ROCHESTER.RR.COM>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Sent: Fri, Jul 26, 2019 5:23 pm
Subject: Re: [DCHAS-L] Is lead sheeting a source of lead dust? And-Chemical Exposure question...
You can see the "stains" on older roofs where lead sheeting is used like that. Moss and other things do not grow where lead has "run off" during rain events. Often I've noted that the "stain" does not reach to edge of the roof, so perhaps the lead does not get to the ground in toxic amounts.Peter Zavon
Penfield, NY
PZAVON**At_Symbol_Here**Rochester.rr.com