Mactac B-free premask or no?

[tiredcreations]

I have a bunch of windows to do in the below layout. I've never used the mactac b-free but decided to switch to it
after hearing good things. This is the B-free frosted, and there will be no printing, just using it for the frosted glass look.
It will be installed indoors and the complete width of the windows.

My question is, will the bigger solid piece at the bottom need to be premasked? I'm not familiar with the characteristics
of this material, will it be too "flimsy" to install with no premask or laminate? I was planning on premasking the top lines,
but since this isn't a wet install, I'm kind of lost at how to go about the bottom.

 

[J Hill Designs]

personally I'd mask it all and apply in 1 go

 

[tiredcreations]

personally I'd mask it all and apply in 1 go

And we have a winner. I tried it both ways and masking it all worked better. The film is a bit too flimsy to install
with no premask.