> -----Original Message-----
> From: Ken Follett
> Sent: Monday, April 15, 2002 9:34 AM
> To: [log in to unmask]
> Subject: Re: new construction
> 
> 
> Acid improperly applied, either too high 
> of a concentration or for too long of a dwell also causes 
> problems, not directly related to efflorescence, but can 
> produce a white haze usually called 'burning.' If acid is NOT 
> fully rinsed out of the masonry it can remain in place and 
> when rain, or other moisture, occurs the corrosive effect of 
> the acid is reactivated and efflorescence may again appear. 

Please clarify: "Efflorescence [or 'burning'??] may again appear."

> and the idea that somewhere in the process there will be 
> a competent person.

And in your experience how likely an outcome is this?
_______________________________________________________
Dan Becker,  Exec. Dir.   "The workman ought often to
Raleigh Historic           be thinking, and the thinker
Districts Commission       often to be working."
[log in to unmask]                       -- John Ruskin
919/890-3678

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