"restoring" a vintage painting

[V (below the Mason-Dixon)]

I recently bought a painting at an estate sale. I felt so bad for it. It looks like someone had put their foot through it but I liked it and it was only a dollar. It had no frame and the canvas was torn away from three sides except the bottom and pieces were falling off. Today I went about putting a piece of plywood in the frame that the canvas was once attached to. Whoever had it before unfortunatly started to use *gulp* duct tape on the back to keep it together and then probably when that didn't work a piece of fabric after that. In a few places you can see the tape from behind and i hope to use pieces that have fallen off or maybe paint to at least blend in with it. So I'm going to be glueing the canvas to fabric and to wood. I want it to stick and not bleed through the paint. Any ideas on what product to use?

[alteredmommy]

I would use gel medium. Golden makes nice ones in different weights-heavy would work the best in this case.  I use it all the time in collage and mixed media art and it sticks well with no bleed through. 

I hope you post a picture of your restored painting!