Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

ISTM that finial (?) is well above the height that roof water could
spill over, that seems to be happening further down the roof in a
symmetrical fashion. and to a much lesser extent anyway.

There won't be any leaking gutters, how's all that water get up there,
assuming it is water?

DG

Derek Geldard wrote:
Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

ISTM that finial (?) is well above the height that roof water could
spill over, that seems to be happening further down the roof in a
symmetrical fashion. and to a much lesser extent anyway.

There won't be any leaking gutters, how's all that water get up there,
assuming it is water?

DG

soot & pollution washed down by rain ?

Derek Geldard wrote:

Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

Santa's been doing wheelies again.

The internet is remarkable, replacing the ladder as a means of finding
answers. What ever next I wonder?

Derek Geldard wrote:
Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

ISTM that finial (?) is well above the height that roof water could
spill over, that seems to be happening further down the roof in a
symmetrical fashion. and to a much lesser extent anyway.

There won't be any leaking gutters, how's all that water get up there,
assuming it is water?

DG

It's probably carbon, soot, pollution, call it what you like....the rain
probably lands on the stonework above and drips on these two pieces at the
sides, it also gets onto it a bit lower down the roof too.....I assume with
these pieces of stonework staying wetter for longer they hold the dirt, or
possibly the pollution / soot in the water is discolouring the stonework.
It wouldn't be as noticable had it been built of a darker stone or even
bricks - yellow sandstone tends to highlight every little mark but is a good
candidate for cleaning because it looks like brand new once cleaned,
although it doesn't stay clean for very long.

.. wrote:
Derek Geldard wrote:
Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

ISTM that finial (?) is well above the height that roof water could
spill over, that seems to be happening further down the roof in a
symmetrical fashion. and to a much lesser extent anyway.

There won't be any leaking gutters, how's all that water get up there,
assuming it is water?

DG

soot & pollution washed down by rain ?

The stonework looks like the industrial grime of old Leeds has already
been cleaned off, except for this dark staining which won't come out. It
could perhaps have been caused by metal salts, dissolved by acid rain
from a weathervane or some other metal ornament (conveniently, just
above the top of the picture). The main staining on the gable looks
consistent with rainwater running down the curved finial in two streams,
and then down the wall and over the arch.


--
Ian White

Ian White wrote:
. wrote:
Derek Geldard wrote:
Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

ISTM that finial (?) is well above the height that roof water could
spill over, that seems to be happening further down the roof in a
symmetrical fashion. and to a much lesser extent anyway.

There won't be any leaking gutters, how's all that water get up
there, assuming it is water?

DG

soot & pollution washed down by rain ?

The stonework looks like the industrial grime of old Leeds has already
been cleaned off, except for this dark staining which won't come out.
It could perhaps have been caused by metal salts, dissolved by acid
rain from a weathervane or some other metal ornament (conveniently,
just above the top of the picture). The main staining on the gable
looks consistent with rainwater running down the curved finial in two
streams, and then down the wall and over the arch.

I think it's safe to say that whatever it is, it's not coming out of the
stonework or from below ) so what's left is spread by rainwater ?

you're right, there /may/ be an iron geegaw on top of the arch and the
pointing does look a bit bright and out of place so it may have been
restored. odd how that staining doesn't seem to have affected the
pointing, isn't it ? perhaps the staining is organic and it likes the taste
of the stone and doesn't like the taste of whatever is in the pointing ?

On Tue, 18 Apr 2006 19:47:33 GMT, "." wrote:



The stonework looks like the industrial grime of old Leeds has already
been cleaned off, except for this dark staining which won't come out.
It could perhaps have been caused by metal salts, dissolved by acid
rain from a weathervane or some other metal ornament (conveniently,
just above the top of the picture). The main staining on the gable
looks consistent with rainwater running down the curved finial in two
streams, and then down the wall and over the arch.


If so one wonders how much ironmongery may lie behind that litlle
round top finial. An old Co-op building near here has the top piece of
the finial fastened to the top of the gable wall with iron bands. If
there was an iron feature up there it would need a more substantial
fastening than that rounded finial.

I think it's safe to say that whatever it is, it's not coming out of the
stonework or from below ) so what's left is spread by rainwater ?

you're right, there /may/ be an iron geegaw on top of the arch and the
pointing does look a bit bright and out of place so it may have been
restored. odd how that staining doesn't seem to have affected the
pointing, isn't it ?

Unless they took down the geegaw when they did the repointing. Sadly
the location of the building is not known. It may not even exist any
more.

perhaps the staining is organic and it likes the taste
of the stone and doesn't like the taste of whatever is in the pointing ?


Thanks.

DG

I'll take a guess that there is lead on top of the stone which has
since leached over the stonework. Shoud have used patination oil on the
lead.]Legin

Derek ^ wrote:
On Tue, 18 Apr 2006 19:47:33 GMT, "." wrote:



The stonework looks like the industrial grime of old Leeds has
already been cleaned off, except for this dark staining which won't
come out. It could perhaps have been caused by metal salts,
dissolved by acid rain from a weathervane or some other metal
ornament (conveniently, just above the top of the picture). The
main staining on the gable looks consistent with rainwater running
down the curved finial in two streams, and then down the wall and
over the arch.


If so one wonders how much ironmongery may lie behind that litlle
round top finial. An old Co-op building near here has the top piece of
the finial fastened to the top of the gable wall with iron bands. If
there was an iron feature up there it would need a more substantial
fastening than that rounded finial.

I think it's safe to say that whatever it is, it's not coming out of
the stonework or from below ) so what's left is spread by
rainwater ?

you're right, there /may/ be an iron geegaw on top of the arch and
the pointing does look a bit bright and out of place so it may have
been restored. odd how that staining doesn't seem to have affected
the pointing, isn't it ?

Unless they took down the geegaw when they did the repointing. Sadly
the location of the building is not known. It may not even exist any
more.

perhaps the staining is organic and it likes the taste
of the stone and doesn't like the taste of whatever is in the
pointing ?


Thanks.

DG

gutted :-( I thought this was quiz and someone had the answer )

Derek Geldard wrote:
Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

It is caused by birds that sit on the flat bits and make a mess
that is washed down by rain.

What's my prize?

On Wed, 19 Apr 2006 09:51:38 +1200, Nick wrote:

Derek Geldard wrote:
Quiz, what 's caused the staining on this gable end?

http://www.leodis.net/display.aspx?I...1&DISPLAY=FULL

It is caused by birds that sit on the flat bits and make a mess
that is washed down by rain.

It's not the right colour. I get that underneath my TV aerials.

And the same goes for the Patinating Oil (Lead Carbonate) entry

What's my prize?

If we ever find the building (let alone what caused the
discolouration) you will be granted free beer for the afternoon at
the "Hope & Anchor" next time Celtic + Rangers play in Leeds.

hint, you might enquire what happened the last time

I can't say "Fairer than that".

Well I've no front teeth.

DG