Sealing Paper Mache Epic Fail!!!!!

About: I am a first time mom and have always grown up doing crafts and cooking with my family. i love to draw and paint and i am the prop director and a part of the artistic team at a local charity haunted house. T...

Well, let just say sometime you succeed and sometimes you learn from your mistakes. I spent about 2 weeks creating a head for our jack skelington figure to go on our roof. Paper mache base, epoxy for around the eyes and joint compound around the mouth. I found out the hard way when torential rains came down that it was not sealed properly.

Step 1: What Did We Learn????

I believe my problem was not sealing it completely with joint compound and using spray paint instead of a latex paint brushed on. Just have to reconcstruct a new one. Leasons learned.



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    6 Discussions


    2 years ago

    Love your Jack Skellington. Interior joint compound doesn't react well to water at all, it just sort of turns to mush, I agree with Mad Props that you can substitute thinset or if you are using joint compound, seal with with a few coats of exterior oil paint or spray on rubber. Good luck.

    Mad Props

    2 years ago

    I live in rainy Vancouver and have had the exact same problem. I switched to Flex-bond thin-set mortar for my Halloween displays then seal it with a layer of exterior house-paint, then paint with acrylic paint. Good luck with the next one!


    3 years ago

    I have had some luck undercoating my paper mache with DryloK Extreme Masonry waterproofer. We live in California so it hasn't been tested in heavy rains but I have had some luck with some paper mache getting rained on using it. He looked great on your roof.

    1 reply

    Reply 3 years ago

    Thanks for the tip and the complements. My kiddo and I work hard on it. I was try to find some thing that would seal it like the 2 part spray paint that came out recently, but couldn't find it at Home Depot. We got 2 days straight of 6 inches of rain each day. Lots of flooding in surrounding areas. Jack didn't stand a chance. Hopefully the new one will hold up better.

    Thanks. We didn't notice it at first, but it was heartbreaking when my 3 yr old asked "Mommy what happened to jack?"