Source: http://www.thriftyfun.com/tf217180.tip.html

Decoupage Newspapers on a Wall

I am embarking on a huge collage project, with hundreds of newspaper pictures. I have 3 questions.

Is there a substance (like varnish or polyurethene) that I can use instead of decoupage medium. For the size of my project I would spend a fortune on mod podge, and am looking for an alternative.

Also, will any of the 'glue' mediums prevent the newspaper photos from yellowing? I will go with the more expensive glue if it will prevent yellowing.

And finally, rather than glue the pictures directly to my garage walls, is there some sort of backer board that I might use, that is inexpensive, and that won't eventually damage the newspaper photos from behind.

Thanks in advance for any tips.

Lisa from Tampa
Source: http://www.thriftyfun.com/tf217180.tip.html
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