[SML] Masonite Stage Floor Issue

[PATRICK MCCREARY]

I have not had this experience because I don't use Theatrical Paint for 
Architectural surfaces. Both of my performance space floors  are covered 
with tempered hardboard - neither of them has this problem.

There are two possibilities here - either your 'masonite' is pretty 
shitty stuff, or the Rosco product just isn't up to the job.

I have instructions posted here:

http://www.arts.iup.edu/facthe/gpatrick/instructions/duron%20instructions.htm

I am pretty specific bout the type of paint - for a reason.

Patrick

On 7/16/2015 2:31 PM, Matthew J. Evans via Stagecraft wrote:
>
> Over the summer, we installed a new stage floor surface on our stage.  
> We used double-sided tempered hardboard - aka as Masonite.  Yes – I 
> realize Masonite is like a brand name like Kleenex is to tissue.  The 
> hardboard was laid over the original stage floor made out of maple 
> tongue and groove boards. Expansion gaps were left in between each 
> piece of Masonite and fastened to the ground with Senco 8x1 1/4 cement 
> board screws. Before the floor was installed. We painted all surfaces 
> and edges with Rosco Tough Prime. I’ve used Tough Prime since it came 
> out and never had a problem with it.
>
>
> After the Masonite was fastened to the ground we noticed that the 
> paint was coming off by rubbing our shoe against it. We were turning 
> our foot on the edge of the sole and swiping the floor.  I'm not 
> talking just a regular scuff from the rubber sole; I'm talking paint 
> completely pulling off down to raw lumber. I contacted Jenny Knott at 
> Rosco and explained our situation. She informed us that she had seen 
> instances of this.  She went on to explain how the processing of 
> tempered hardboard has changed over the years.  Apparently, the 
> processing now involves linseed oil.  And as we all know, oil and 
> water-based products do not mix. She advised us to wash the raw 
> Masonite and apply more coats of paint. She also advised us to let the 
> floor cure for 48 hours.
>
>
> The other layer of this onion involves our observation of lighter 
> colored Masonite. I'm used to the chocolate brown Masonite. Instead, 
> this Masonite was blond in color. I contacted the lumber yard, and 
> they said color didn't make a difference.  The Masonite had a smooth 
> finish on both sides, so I know it’s tempered.  We went to another 
> lumber yard and picked up another batch of Masonite. This time it was 
> a little bit darker – almost khaki colored - but not the dark 
> chocolate color I'm used to.
>
> We paid extra attention to washing the floor and again painted all 
> surfaces and edges.After laying the floor a second time, it was still 
> doing the same thing with our shoes.We tried several tests using 
> different coats of paint and ultimately discovered it would take four 
> coats of paint to resist scuffing.
>
>
> It’s been about a week since we finished the last coat and yesterday 
> we had to lay tape down on the floor to mask out an area to paint a 
> safety line. Today, when we went to pull up the tape,some of the top 
> layers of the floor came up with it.  The tape was down for 24 hours. 
> The floor had over 48 hours to dry.
>
> I’m certain we may have a manufacturing issue with the lumber.The 
> paint is adhering and doing its job. Rosco has checked the batch 
> number and everything checks out.
>
>
> Has anybody experienced this?
>
>
>
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-- 
G. Patrick McCreary
Technical Director
Department of Theater and Dance
Indiana University of Pennsylvania

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