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bonding plaster castings to foam?

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  • Member since
    June 2016
  • 16 posts
bonding plaster castings to foam?
Posted by Rumpelhardt on Wednesday, September 20, 2023 10:02 AM

What is the best way to attatch plaster cast rock to foam.

  • Member since
    January 2014
  • 1,500 posts
Posted by ROBERT PETRICK on Wednesday, September 20, 2023 10:23 AM

Acrylic ceramic tile mastic cement. Consistency of peanut butter, easy to apply, holds firm. Clean up hands and tools with water; but once it sets, it's set.

LINK to SNSR Blog


  • Member since
    February 2005
  • From: Vancouver Island, BC
  • 23,330 posts
Posted by selector on Wednesday, September 20, 2023 11:21 AM

I always have a tube of LePage's PL300 handy, and that is what I have used over four layouts to date.  It is tacky and pliable, almost like taffy, but it will harden oveer time.  Light plaster castings won't sag much, but you would be wise to place something below the casting to help keep it put. 

  • Member since
    July 2006
  • From: Central Vermont
  • 4,565 posts
Posted by cowman on Wednesday, September 20, 2023 7:15 PM

I just used foam compatable, cheap laytex caulk.  Worked fine, lasted  over 10 years, seemed to still be holding when I sold the layout 

Good luck, 

Richard

  • Member since
    July 2006
  • From: west coast
  • 7,670 posts
Posted by rrebell on Thursday, September 21, 2023 8:32 AM

Latex caulk, never been a proublem.

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