Unfortunately I can’t help you with advice about Latex paint as I live in the UK and we don’t have that type of paint here. I get so many queries relating to Latex paint from America that I once rang the technical branch of ICI, here in the UK, and asked them what is the difference between Vinyl Matt Emulsion paint (which we use here) and Household Latex as used in the USA. They said they didn’t know. I asked if they could ring their counterparts in America and ask. (ICI are International paint makers). They replied that they don’t have any contact with America! You would have thought I was asking them to ring someone on the moon.

What we know as “Latex” here in the UK is a very different solution, and is like a liquid rubber which is used to stick material (such as carpet or canvas) together. You couldn’t paint with “our” latex.

You’ll note I say I use household vinyl matt emulsion paint on my scenery. I think it is the vinyl component in the paint that makes it flexible enough to paint onto canvas which can then be rolled up. Look on the tin to see if “your” latex contains vinyl or acrylics.

Here are a couple of alternatives for latex....

The paint which most professional scenic artists use (and some amateurs) both here and in America is called Rosco. Wonderful stuff - but dear. However a little goes a long way as it can be thinned down without losing its colour or covering capacity. Rosco is based in the USA so you would have no problem obtaining it there. Personally I rarely use it because of the cost.

The other possible paint to use is artists acrylics. But this would also work out expensive for a large mural/backcloth.

Sorry I cannot be more helpful