Conservation Glass ?????

Create a Post
J

Jeanette

CGF, Certified Grumble Framer
Joined
Jul 20, 2009
Posts
122
TV Conservation glass is with 97% UV protection.
TV Non-Conservation glass is with 45% UV protection.
--------------
What this means to the art behind the glass is next to nothing.
If UV penetrate the hause wall and is stoped by the glass, what happens with the back side of the art. To protect the art, 97% UV glass should be at both sides of the art?
If glass stop the UV, what happens else? UV go to the heat that can also damage the art...
---------------

What else is difference between that two glasses, beside % UV?

Thanks
 
Where did you hear that UV rays penetrate walls?:nuts::faintthud:

Now, if you are talking x=rays, that's another thing.
 
We like to use a nice thick sheet of lead on the backside to keep those pesky gamma rays at bay!

radiation_image_small.gif
 
No, I talk about UV. They comes through the walls, but good part is absorbed. Where otherwise they come from (light bulb is very small and short time source of UV).

But my prime interest is the difference between conservation and non-conservation aside from UV protection.
 
But what is difference between conservation and non-conservation aside from UV protection?

Thanks
 
C'mon, Jeanette...repeat after me... UV rays do not penetrate walls.

You really need to accept this if you are going to understand anything about the protection of art.:thumbsup:
 
UV light does penetrate the walls here in Canada especially if your lazy and don't pack the snow enough to make them thick and solid
 
This is clearly a case of Grumblers jumping to conclusions again. Clearly, Jeanette lives in a glass house.

Well then my advice is to not throw stones.
 
Jeanette, you need to update the information on your web site. I understand your purpose is to inform consumers, but much of your information is incomplete or incorrect.

For example, proper wet mounting does not cause any moisture-related problems in a picture frame, because all of the moisture is evaporated away before assembly. Also, your glass information is both incorrect and incomplete.
 
pwalters said:
This is clearly a case of Grumblers jumping to conclusions again. Clearly, Jeanette lives in a glass house.

Well then my advice is to not throw stones.
Click to expand...

No, she lives in a suburb of Toronto.

Jeanette,

Read the FACTS article about UV glass.

Non Glare is not more expensive than UV glass. It provides almost the same amount of protection as regular glass UV-wise, ie less than 45%, and is in no way shape or form superior to UV glass.

If you continue to tell your customers it is, well you will lose customers as they will repeat your line to another framer and they'll get "better educated" about glass.

Look at these recent threads. I have learned that FACTS is out of date, but still more relevant than your info on your website.
 
Maybe Jeanette can explain what this means:
We use relaxing of shock wave stress in joints (Gallery Jeanette Patent) from the web page about framing.

I googled the phrase and all that came up dealt with "The formation of residual stresses in weld joints in explosive treatment"
As that is about welding metal to metal, I would like to know how that relates to joining wood corners together and exactly what shock waves stresses are being created by gluing frames together.

I'm open to learning something new but this sounds like Scientology to me. :faintthud:

By the way... your choice of gray lettering on a black background is VERY hard on the eyes to read.. especially when the copy is so small... and the dark green lettering is just as hard as the gray.
 
Jeanette, I would suggest opening up the side window and using it to showcase more artwork. The curtains eat up 1/2 your display space.
 
Be kind, people.
 
Okay Dave

Jeanette
first layer of backing Tin Foil then tyvek.
Tin Foil has been know for many decades to block many forms of invisible rays.

Dave uses it.

What kind of uv liner are you using in the velvet? I know In the Ansel Adams museum in Frisco they cover His photos with velvet. Never thought to ask them.
 
I dont want to pick apart Janettes entire website...but this one line really has me scratching my head

"The only purpose of glass is to protect your artwork from flies":nuts:

I will be the first to admit that I still have a lot to learn, but please, do some research before putting incorrect information out there for the public to read, it hurts the entire industry.
 
Larry Peterson said:
If I had to hazard a guess, it appears that the site was written by someone whose first language is probably French.
Click to expand...

I am assuming, and have been for a long time, that Jeanette is a French speaking woman, but why does the use of flies in that sentence suggest this to you?

Besides someone else is responsible for the design of the site.
 
Bob Doyle said:
I am assuming, and have been for a long time, that Jeanette is a French speaking woman, but why does the use of flies in that sentence suggest this to you?
Click to expand...

Not just that sentence. but the general tenor of the entire site. For example:

This is where double and triple mat comes.

It provides beautiful immediate environment which enhance appearance of the art.

Matting a photograph is further more important if one wish to sell photographs either framed or unframed.

In addition to colours mat surface has one more decorative element, texture.

- protect back of a photograph from environment attack,

We offer no mounting, because we are committed only to excellence.

Some art galleries requires no mounting, so a photograph can be separated from the board.

And more.

I may be wrong but the grammar strikes me that English is not the first language of the writer. But then again, I could be accused of that and English is all I know.
 
As far as I know (and according to my TV display); cc glass, conservation refl.control and museum glass is all 99% UV protective.

For more on this I suggest you do a search across the forum. There are many different opinions.

I always make sure that customers know that this glass does not mean that their art will never fade as there are factors we can't control.
But that the glass is the best out there and does the best job it can. So why not sell/use it.
 
Ylva said:
As far as I know (and according to my TV display); cc glass, conservation refl.control and museum glass is all 99% UV protective.

For more on this I suggest you do a search across the forum. There are many different opinions.

I always make sure that customers know that this glass does not mean that their art will never fade as there are factors we can't control.
But that the glass is the best out there and does the best job it can. So why not sell/use it.
Click to expand...

Why are you interfering with this debate with logic? :p
 
Jeff Rodier said:
As far as the glass is concerned, absolutely nothing.
Click to expand...


I thought Conservation Glass had less iron in it, which is why when you look at the side of cheap regular glass it looks green, and when you look at the side of Conservation Glass it looks clear/brownish.
 
framerbob said:
I dont want to pick apart Janettes entire website...but this one line really has me scratching my head

"The only purpose of glass is to protect your artwork from flies":nuts:
Click to expand...


But glass is very effective against the flies!

120912189_98a1e5e866_o.gif
 
cjmst3k said:
I thought Conservation Glass had less iron in it, which is why when you look at the side of cheap regular glass it looks green, and when you look at the side of Conservation Glass it looks clear/brownish.
Click to expand...

At some time in the past (6 years ? anyway) TV switched to a lower iron glass which has a slightly different color cast than it used to.

I believe both the UV filtered and the non-UV filtered glass is the same from TV.

If you buy regular glass from a different source, the iron content MAY be different. (more or less)

The color shift created is extremely subtle and most people can't see it unless side by side on the same picture.
 
cjmst3k said:
But glass is very effective against the flies!
Click to expand...
Then oil paintings would have always had glass on them as there were flies in the age of the "Old Masters".

Museum Glass and Den Water White were low iron glasses, but from what I have heard UV is regular glass with a UV coating.
 
Bob Doyle said:
Then oil paintings would have always had glass on them as there were flies in the age of the "Old Masters".

Museum Glass and Den Water White were low iron glasses, but from what I have heard UV is regular glass with a UV coating.
Click to expand...

The old Denglas was a MUCH clearer glass than the TV base glass, but they (TV) did change their product in the past to reduce color shift.

As I said, Regular glass has varying levels of "ingredients" that can have a slight color shift.

It is my understanding that all of the TV glass uses the same base float glass.
 
Hi Jeanette,

Dont worry about the piranha feeding frenzy - many grumblers just like to poke fun, especially when fresh meat drops into the pond.

When incorrect information is posted someone will help educate you. There is a wealth of knowledge available here -- yes even the piranhas are knowledgeable. Ask the question, and you will learn.

Ernesto
 
Ernesto, click her name and check her prior posts. :) She has asked questions and has gotten good info from us in the past.

But yes, we are having a feeding frenzy on her behalf right now. i would dare say that much of the content on her website she did not get from here.
 
Pat Murphey said:
TruVue Conservation Glasses are also low iron as stated by a previous poster. "Heard" doesn't cut it.
Click to expand...

I was replying to the poster that had said that UV glass was lower iron glass, so I was saying to Chris that I had heard that the glass was not low iron but regular glass.

right after I posted Cliff said that TV had changed the formula but hat all TV glass uses the same base float glass. I had thought that Museum was a low iron glass, but I am now under the impression that museum is regular float glass with a coating that changes the reflection/refraction angle.

I know I am usually wrong, and that you do kindly help to point that out for me :) but I am still pretty sure that UV con clear by TV and Premium clear by Truvue are the same glass, and are not a low iron glass. Maybe they are lower iron, but they are not as brittle as DenGlas was. IMO.
 
Bob Doyle said:
I was replying to the poster that had said that UV glass was lower iron glass, so I was saying to Chris that I had heard that the glass was not low iron but regular glass.

right after I posted Cliff said that TV had changed the formula but hat all TV glass uses the same base float glass. I had thought that Museum was a low iron glass, but I am now under the impression that museum is regular float glass with a coating that changes the reflection/refraction angle.

I know I am usually wrong, and that you do kindly help to point that out for me :) but I am still pretty sure that UV con clear by TV and Premium clear by Truvue are the same glass, and are not a low iron glass. Maybe they are lower iron, but they are not as brittle as DenGlas was. IMO.
Click to expand...

TruVue CC and up are all low iron and have been for while. I don't know about, and offer no information about, regular (Premium Clear) because I haven't bought any for a while - the last box I bought still had the green edge tint. I raised the point because "I heard" is an absolutely inappropriate way to give information about a product here. A previous poster had given the correct information. If you have any verified information about differing iron levels and their importance, feel free to offer it. The low iron TruVue products no longer have a trace of green tint.
 
Over a period of time TruVue has converted all of their conservation products to low-iron glass. I believe non-conservation products are still ordinary glass, but they might also be low-iron by now; I'm not sure. That topic was not discussed when TruVue took their consultants, including me, to the coating plant in Minnesota.

Low-iron glass eliminates nearly all of the green tint common to ordinary glass, which helps the color rendition. Low-iron glass also is less brittle, less prone to accidental breakage, and easier to cut than water-white glass. As far as I know, none of TruVue's glass is water-white, because it is more costly, harder to work with, and would provide little benefit over low-iron glass, if any. In most display environments, light color is not so precisely controlled that the slight difference of color betweeen low-iron and water-white would matter. Glass coatings impart a slight tint, but it is generally not noticeable, as it affects all colors similarly. I'm pretty sure ambient light has a larger influence on color rendition.
 
Pat Murphey said:
A previous poster had given the correct information. If you have any verified information about differing iron levels and their importance, feel free to offer it. The low iron TruVue products no longer have a trace of green tint.
Click to expand...

Then I stand corrected. My information was out of date, as out of date as the information on the FACTS website.

So for my education, does the lower iron content of the glass lower the inherent UV protection in regular glass? Since it is chemically different does it also behave differently? (Serious question, not being snarky.)

I remember reading from Den's literature that their low iron offered lower UV protection, can't recall the %age numbers I want to say in the 20-30%s for low iron and 35-45% for regular glass.

If so then did TV reformulate their UV coatings? Or was the 98%+ claimed protection adequate to cover the difference in glass makeup?
 
Thanks, Jim, for the info about TV's glass. I remembered Den being brittler than reg glasses, thought it was the iron content, but glad to hear that that was the factor, since TV is coming out with low iron.
 
Jim Miller said:
I'm pretty sure ambient light has a larger influence on color rendition.
Click to expand...

There should be no question in anyone's mind that the white point or color temperature of the ambient light is the primary influence on viewing color.

Glass content has an extremely minor color shift when viewed under the same lighting conditions.
 
Bob Doyle said:
So for my education, does the lower iron content of the glass lower the inherent UV protection in regular glass? Since it is chemically different does it also behave differently? (Serious question, not being snarky.)
Click to expand...

If you have a recent box of TV Premium Clear, just look at the edge, if it's still green, no change. If it's the light bown low iron color, the answer might be found by comparing old TV literature to their latest specs. I don't know the answer.
 
Correction

This morning I contacted TruVue to ask a couple of questions about their use of low-iron glass. Sorry, but what I said yesterday was wrong.

According to this morning's information, TruVue does not use water-white or low-iron glass for any of their products. The usually-visible green tint on the edges has been neutralized by the coating chemistry, which explains why we no longer see it. This glass is more readily available, less brittle, and less costly than water-white glass.

The same reply confirmed that color rendition of framed art is more greatly affected by variations in ambient light than by the color-corrected tint of the glass.
 
Jim Miller said:
This morning I contacted TruVue to ask a couple of questions about their use of low-iron glass. Sorry, but what I said yesterday was wrong.

According to this morning's information, TruVue does not use water-white or low-iron glass for any of their products. .
Click to expand...

Pat Murphey said:
TruVue CC and up are all low iron and have been for while. I don't know about, and offer no information about, regular (Premium Clear) .....

A previous poster had given the correct information.....

If you have any verified information about differing iron levels and their importance, feel free to offer it. The low iron TruVue products no longer have a trace of green tint.
Click to expand...

I had willingly taken my dressing down from you Pat. I am now awaiting a much anticipated apology....
 
Thanks for advices but I think it all could be said and in some nice way too, and than it might be even more educational and could reach much further.
Yes my site is ready to change, and soon will be.
 
Paul not true, not true, easy to tell apart. The CC box has a red and blue stripe on it and has Conservative clear written on it :)

Still green, but not as much as before.
 
Create a Post
Back
Top