Ceiling paint question

[Olliecampbell]

Hello,

I'm in the process of sorting out my garage, currently painting the ceiling to make it as bright as possible.

The garage has a flat roof with some sort of tar finish. I believe this is laid straight onto large sheets of wood that make up the internal ceiling. So no gap, insulation etc.

I've just put some primer on the bare wood inside and was thinking of using some white gloss paint to make it as bright as possible.

My question is, as this gloss paint isn't going to be breathable is it going to be a problem?

 

[WILD-BILL]

My bet is the tar on the other side is preventing it from breathing now.

 

[Olliecampbell]

My bet is the tar on the other side is preventing it from breathing now.

True, but is it breathing into the garage instead at the moment?