Hello friends,

I would like to ask you a question about my acrylic pourings on yupo paper, and more specifically the storage of them.

Last week, I had a very unpleasant discovery when I took my pouring paintings from last year,
and I saw that on each painting there were a kind of marks left by the backing paper…
I stored these paper sheets on top of each other, with baking paper in-between,
and according to me I stored them after two or three weeks of drying time.
Some people told me this phenomen is called ‘ferrotyping’
this mostly happens when paintings are stocked horizontally and with much weight on them.
Apparently, the structure of the baking paper must have been given off on the pouring painting thereby leaving marks.
But I don’t understand, 20 paper sheets on top of each other is really not such a big weight..
And should i store pouring paintings on yupo paper vertically?

I’m somehow confused as I don’t know what specifically is the reason,
and esp. how i can prevent it in the future when storing my new pouring paintings on yupo

Did someone already experience this kind of problem and if so do you have a kind of (storage) advice for me.
I would be very grateful to hear your meaning, thanks a lot in advance,

Phil

Hi Phil, As the supplier of YUPO we can only really speak to the paper itself. However, some best-practices when storing prints is to use an acid-free interleaving paper, such as Glassine, to protect the artwork below. Even 20 prints stacked with poured acrylic will create sufficient weight to the bottom sheets, so you might want to consider reducing the amount of prints you're stacking. We recommend stacking horizontally in flat-files, for example.

Environmental conditions should also be monitored, such as temperature and humidity levels - especially for acrylics which can reshape over time depending on exposure to extreme temperatures.

Thank you very much for your answer.

It surprises me that this issue is not discussed very much in forums, although I think that many people do pourings on yupo paper... :-)
I used to read that 'baking paper' was the solution as in-between paper between stored yupo papers with pourings,
but apparently baking paper can cause ferrotyping if these pouring paintings have not sufficiently dried (read: during weeks).
Thanks for the hint with glassine paper, I also got the suggestion to use 'silicone coated paper' as in-between paper
It seems that this paper can not stick to pourings and can not leave any marks :-)

Have a nice day, Phil