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5/8 Fireguard Type X - Plaster or Mud and Tape

5/8 Fireguard Type X - Plaster or Mud and Tape

Old 02-01-10, 12:42 PM
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5/8 Fireguard Type X - Plaster or Mud and Tape


I have a 30ft section of wall 8ft high I replaced the sheetrock with Fireguard Type X gypsum board.

I know this is meant for mud and tape finish but I have heard about a bonding agent which would allow a plasterer to finish with veneer plaster.

What are the pros/cons of plastering the sheet rock with the bonding agent? Is it hack?
Old 02-01-10, 05:02 PM
Join Date: Jul 2003
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There is a veneer plaster base board (commonly called blue board, not to be confused with the purple board) that is made for veneer plaster.

But plaster over bonding agent is done all the time. If this is new rock with no paint it should be just fine. Tape the joints as with conventional drywall. Use quickset joint compound or better yet, Durabond Use paper tape, then apply the bonding agent. Then the veneer plaster. I think you get a better job with a two coat system over bonding agent.

USG makes a special bonding agent for their Decorative Plaster Finish System. Might be worth going with it but I never have used it.

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