Problem Warped painting

[tdratler]

Folks,

Here's hoping someone can suggest a solution for my problem.

I've got an art piece that was painted on a ragmat that was glued to a piece of foam core. The piece is about 16x20. It's developed a slight arc going the long way (think flat rainbow). I've tried weighing it down to flatten it out, but it keeps springing right back.

Can anyone suggest a way to flatten this sucker out?

Thank you!
-Tom

PS: it's going into a sink mount.

 

[Framar]

You could attempt to counter mount something equally thick as the ragmat on the front onto the back. Use something like Frank's or gel medium, dry under weights for a couple of days. That should counteract the pull and re-balance the thing to flatness.

 

[Lisa in New Jersey]

I used to paint on foamcore panels (acrylic) to be used for backdrops at theme parties. Once the paint dried, the foamcore would warped just like you described. To fix this, I lightly sprayed a water mist on the back & applied weights to dry overnight (art side down).

 

[tdratler]

warped painting cont...

I decided to try Lisa's approach first since it's less invasive. After two treatments, about 80% of the warping has been eliminated. I'm letting the painting rest for a day or so to see if it springs back. If it doesn't spring back, I'll give it one more treatment (see if I can improve it a bit more) and then fit it.

Thanks for the assist!

-Tom