permaculture

[Michael Dean <mikedean.com@altavista.com>]

Howzit,

Can somebody explain to me why --"Never use lead head nails as fasteners on 
such a roof; alternatives: stainless steel screws, also galvanized screws and 
nails with neoprene washers" 


Cheers Mike.

On Mon, 10 December 2001, "Lawrence F. London, Jr." wrote:

> 
> On Mon, 10 Dec 2001 00:24:03 -0800 (PST), John Schinnerer
> <eco_living@yahoo.com> wrote:
> 
> >
> >Aloha,
> >
> >> Any decent well, properly installed will have galvanized casing
> >> installed and grouted securely into bedrock. 
> >
> >This is typical of what I've seen, but galvanizing isn't exactly
> >low-tox - (small-print) warning messages are now appearing on packages
> >of galvanized wire bought at hardware stores.  Basically they say
> >something like "don't eat anything you've touched with your hands (or
> >suck on your finger, etc.) after touching this stuff until you wash
> >your hands *real* well, and it might be a good idea to wear gloves when
> >handling it."
> >
> >Galvanized roofing isn't OK for potable catchment, afaik.  I certainly
> >wouldn't drink water off it except in an emergency.
> >
> >Anybody have more details on galvanizing?
> 
> 
> Yes. Never weld or oxy-acet cut galvanized unless you like 
> languishing in a hospital bed - ZINC is the culprit here.
> There may be some slight rish handling new galv. roofing then
> eating oranges with unwashed hands but only slight. After it has
> weathered a bit there should be no risk using a galv roof in a
> catchmanary system. Never use lead head nails as fasteners on such a
> roof; alternatives: stainless steel screws, also galvanized screws and
> nails with neoprene washers.
> 
> 
> 
> 
> L.F.London ICQ#27930345 lflondon@mindspring.com
> http://www.ibiblio.org/ecolandtech  london@ibiblio.org
> 
> ---
> You are currently subscribed to permaculture as: mikedean.com@altavista.com
> To unsubscribe send a blank email to leave-permaculture@franklin.oit.unc.edu
> Get the list FAQ at: 
> http://www.ibiblio.org/ecolandtech/documents/permaculture.faq


Find the best deals on the web at AltaVista Shopping!
http://www.shopping.altavista.com