[240 LTS]

Is it ok to only finish blue board the same as typical drywall instead of white coating the entire board? Will the unfinished surface take paint the same as white board or MR (green) board?

I am asking for another guy, so I don't know this, does blue board have tapered edges or square edges? Concerned about the D/W tape being covered easily with the block and skim coats.

[Brocktologist]

Are you talking about drywall or plaster board?

[WarnerConstInc.]

Same thing, different paper. Same set up as regular dry wall just special paper for absorbsion of water from the veneer coat plaster.

Why would you spend the money on blueboard and finish it like regular rock?

[Darren@Partners]

Core is different, paper just different color so can tell it apart. Yes edges are tapered, finish same as reg. drywall. Use primer and 2 coats of color, should cover fine. "Blue board" being moisture resistant also comes in shades of green. Purple (here) is plaster base.

[WarnerConstInc.]

Originally Posted by Darren@Partners

Core is different, paper just different color so can tell it apart. Yes edges are tapered, finish same as reg. drywall. Use primer and 2 coats of color, should cover fine. "Blue board" being moisture resistant also comes in shades of green. Purple (here) is plaster base.

Look that up, I am positive the paper is the difference.

[SLSTech]

Originally Posted by WarnerConstInc.

Look that up, I am positive the paper is the difference.

Heh heh, from Bob Villa, core is the same gypsum

The difference is in the paper covering: blue board's characteristic blue face comes from the special paper on the board's surface, which is treated to bond well to a skim coat of specially formulated plaster.

[Tim0282]

It used to be the blue board or Kal Board was not tapered, but the last times we have used it, it was tapered, so we pre filled with base coat before skimming the whole wall with base coat, then finish. The paper is definitely fuzzier so you might have to sand the primer after it is dry, then paint.