Glass Message Board
Glass Discussion & Research. NO IDENTIFICATION REQUESTS here please. => Murano & Italy Glass => Topic started by: Mister Loco on January 12, 2012, 10:25:54 AM
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Hello. We've always loved 60's Murano glass and we're starting to collect better items in a more planned way. My question - is it safe to display glass on a sunny south-facing window ledge? Can the sun fade or damage glass? Thanks in advance for any advice.
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Hi and welcome Mr. Loco! :hi:
Personally I´m always a bit cautious with displaying glass on a sunny window sill although it´s such a fascinating
thing to see your items in the different lighting situations.
For the following reasons:
- clear glass can change the colour over the time. Some glass becomes slightly yellowish or greenish and over a
longer period purple-is; I´m not sure about the first two effects, but the latter is caused by the manganese
content in the glass batch.
- some glasses can work as a lense - especially paperweights - and even cause burning. I think we´ve got a topic
about an article in some newspaper some time ago.
- the heating when exposed to the sun can cause stress fractures, if the annealing wasn´t sufficient or there
are still strains within the glass. Bubbly items are even more endangered because of the different extension
levels of glass and air.
I therefore tend to keep my better pieces north and some of the minor and coloured ones south... :)
Surely others will be adding quite a bit to your thread.
Kind regards,
Dirk
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And there is no such thing as a silly question ! at least the nice people on this board tell me that!
Can't add any more than Dirk has said - but welcome!
JAK
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Don't forget that the advice from Dirk applies only to the Northern Hemisphere Jakgene and myself would use the Southern window sill.
Ross
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And of course the lintel instead of the sill... :ooh:
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Hi Mr. Loco.
Welcome to the mad world of glass collecting and the GMB.
I am posting a picture of my South facing windowsill so you can see how the wood nearly caught fire by sunlight through the glass spheres I originally had displayed there!!
Eeeek!
Rosie. :)
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Hi there and Welcome!! :rah:
No question is ever Silly in my mind, as we are all learning!!
I never knew that about glass either in the window sill as posted here.....so any questions are Good questions, IMHO. It is all a learning process!!
:thup:
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Sounds to me, Mr Loco, like you have a collection we would all like to see - at least some of the pieces you like. This link http://www.glassmessages.com/index.php/topic,42591.0.html takes you to a wonderful topic that many people have contributed to and I suspectryou could enrich by showing us parts of your collection.
In future it would be better to place general questions(like this one) in the "Glass" section of the site as a person with no real interest in Murano(Yes! There are some out there.) who might have helpful suggestions would not see it. The moderators will fairly rapidly move a topic to its appropriate area if it is very specific and is not creating enough interst in the general area.
Ross