Sorry to the confusion. Elastomeric coatings allow for dampness to escape but block its entry, one way trip out for moisture. Normal house paints will also be ‘breathable’ but elastomerics tend to be more ‘breathable’, enabling extra h2o vapor to go through the coating into the outside. I use interior http://exteriorpaintersreviews51663.tinyblogging.com/An-Unbiased-View-of-exterior-painters-reviews-26021913