Anyone here have experience with paint/primer that has vapor barrier properties?

[HereSince1628]

Latex paint would seem to offer a 'plastic' vapor resistant barrier that eliminates the need for stapling 2 ml thick sheets of plastic sheeting all over a construction.

I've found a handful of paint manufacturers that produce such paint, but no local professional paint stores that provide it.

I've been told that such things DON'T exist, as well as being told that "you're delusional". The latter sort of rubbed me the wrong way as I have a psych Dx (anxiety related) to start with.

[intaglio]

1. Problem, you need a certain low level of permeability

If not then the low level of water vapour inside from cooking, heating and breath can build up rotting timber and drywall.

Look at building membrane such as Tyvek or equivalents

[HereSince1628]

3. Yes. Generally, vapor barrier this requires a permiability rather less than 1.0

The lower the number the better.

The primer/paints that I've looked at yield permiabilaties of .6 and less.

That's very similar to 2 ml of plastic. The advantage is clearly labor savings that is eliminated by notdealing with sheets of plastic.

Anyone use such a thing?

[ret5hd]

4. You mean like this?

used to waterproof surfaces before applying tiles:

[HereSince1628]

5. I meant like Glidden GP 1060 Vapor Barrier or

Benjamin Moore Super Spec Latex Vapor Barrier.

Both are 'nonbreathing' primer sealers for ceilings & walls with permeability ratings around .6

[ret5hd]

6. I believe redguard has a "perm rating" of 0.

Just sayin'.

[HereSince1628]

7. Being thick enough to apply with a trowel is something of a problem

for ceilings that I don't intend to tile.

[Nac Mac Feegle]

8. I've seen some stuff done with Kilz

The interior of a building that had a small fire. They sprayed the entire interior of a block building including the ceiling of the warehouse area. there was no smell from a nasty chemical fire.