Benjamin moore has a super spec primer k206 00 that is a latex paint and comes in at less than 0 5 perms.
Air vapor barrier paint.
Ccw 705 twf datasheet sds spec detail certs self adhering thru wall flashing.
Sherwin williams has a moisture vapor barrier latex paint b72w00001 that comes in at less than 1 perm.
Ccw 705 twf xlt datasheet a 40 mil thick self adhering.
This type of material is most appropriate for southern climates where keeping humid outdoor air from entering the building cavities is critical during the cooling season.
Without water vapor barrier paint the warm air would release its water inside of the walls and ceilings where the water would saturate the insulation and framing.
The reason as you may have read is that when there is a vapour barrier in homes in hot humid climates that rely on air conditioning for human comfort that vapour barrier.
It combines a primer and finish in a single fast drying coat and is specially formulated for manufactured housing facilities.
Ccw 705 air vapor barrier strips datasheet sds detail self adhering flashing for detailing ccw 705 and barriseal systems.
Is more of a solution for walls rather than ceilings to prevent the indoor vapour drive during hot humid weather.
Vapour barrier paint or vapor barrier paint in the u s.
Ccw 705 xlt strips datasheet ccw 705 xlt is a low temp version of 705 strips.
Water vapor barrier paint is often applied to drywall walls and ceilings in attics where warm air tends to rise.