on 4/9/02 5:06 PM, Ken Follett at [log in to unmask] wrote:

> Montauk Lighthouse
>
> For those on BP who have expressed an interest in my adventures with the
> Montauk Lighthouse I have posted a graphic of a sample of coating on
> PigHabit-L in the files area as mlh-ps01.jpg.
>
> The coating is approx. 1 mm in thickness (thick coating). The arrows point to
> cracks in the coating through which, if you hold up the sample, you can
> clearly see light. This cracking pattern is throughout the coating, and
> evident on all sides of the chimney.
>
> The installer is reported to have stated that the cracking will not affect
> the performance of the coating. I suppose it depends on what one means by
> 'performance'.
>
> The coating is delaminated from the sandstone (which appears to be a
> brownstone), sounds out as hollow when tapped, and lifts lightly by sliding a
> penknife between the coating and the stone. Stone does not appear to adhere
> to the backside of the coating when it is removed. There is something other
> than coating on the reverse of the sample; it is a dirty white in color. The
> coating adheres, we think, to the mortar joints between the stones. The area
> of the stones is roughly 10" wide by 7" high. The coating fully removes from
> the surface area of the stone.
>
> I was informed that the tower of the lighthouse was soda blasted and then
> washed down with pressure water rinse and the coating operation begun two
> days following after the rinse during 30-degree temperatures in February. The
> advertisement for the coating states that it can be applied to 20 degrees
> Fahrenheit.
>
> The geographic location is that the lighthouse is within 200' of the
> Atlantic, essentially with ocean on three sides and land behind. It is a
> somewhat windy location with ample opportunity for a salty sea breeze.
>
> The installer has advised the lighthouse preservation group that the problem
> is the stone, and not the coating. This is the tip of the iceberg. I'll be
> getting into this further, later.
>
> Is anyone able to educate me as to why the coating may be cracking?
>
> If anyone wants to see the graphic, but can't negotiate PigHabit-L, let me
> know and  I'll gladly send it as an e-mail attachment.
>
> Thanks,
> ][<en
>
> --
> To terminate puerile preservation prattling among pals and the
> uncoffee-ed, or to change your settings, go to:
> <http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>
Ken

I'll take an e mail of the coating.  I'm already forming some opinions
however.

Bill

--
To terminate puerile preservation prattling among pals and the
uncoffee-ed, or to change your settings, go to:
<http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>