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Pre-patinated plastic gumby block w/ coin slot <[log in to unmask]>
Subject:
Re: Question about waterproofing products
From:
edison <[log in to unmask]>
Date:
Tue, 15 Mar 2005 20:32:33 -0500
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<[log in to unmask]>
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Pre-patinated plastic gumby block w/ coin slot <[log in to unmask]>
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But, Ralph, tell us what you REALLY think.

This exact question was raised at the recent SWR Institute winter conference.
It seems some west coast consultants have studied this, and the silanes can be
beneficial in helping glaze-crazed terra cotta from taking on moisture. Glazes
which are intact, of course, won't absorb any.

Mike E.

---------- Original Message -----------
From: [log in to unmask]
To: [log in to unmask]
Sent: Mon, 14 Mar 2005 22:57:17 EST
Subject: Re: [BP] Question about waterproofing products

> In a message dated 3/14/2005 10:38:47 A.M. Eastern Standard Time,
> [log in to unmask] writes:
>
> I'm reviewing an application for a re-roof on a important and highly  visible
> historic building. Applicants are repairing the historic clay tile
>  roof, and are also proposing to waterproof (spray apply silane
> waterproofing  to the roof-side of existing masonry parapet walls to
> reduce water  infiltration) Exterior masonry walls have been
> previously waterproofed in the  80s.
>
> I'm not familiar with this product-- I'm going to check the web, but  wanted
> to see if there were any words of wisdom from the list on this sort of
> application.
>
> Heidi,
> Absolutely no spray on applications to masonry, ever, under any
> circumstances (for the most part, which is to say 99.999999% of the
> time, and I  can't think of any legitimate exceptions.)
>
> Spray-on applications are cheap-shit, half-assed attempts to avoid  doing
> things the RIGHT way, and will eventually (and possibly immediately)
> bite  you in the ass, wallet, and historic fabric.  Have the parapets
> disassembled, flashed properly (using SHEET flexible-membrane flashing,
>  not  schmear-on crap with the potential for holidays which will leak)
> and  rebricked. Make sure that flashing is installed under whatever
> the coping  material is, also.
>
> DON"T try to save money on this.'
>
> Ralph
------- End of Original Message -------

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