A new concept wall 
system is provided, wherein the Exterior Insulation and Finish 
System cladding is created using components with no water absorption, a very low vapor permeability and sealing properties, accommodated with an installation technology which extend the materials properties to the 
assembly, together with bonding and sealing the intersections and terminations, creating a Non-Permissive to water and vapor 
diffusion, Exterior Insulation and Finish 
System (NP-EIFS). The present invention relates to an EIFS cladding having two air and vapor barriers, one applied to the substrate, a continuous liquid membrane with sheathing joints sealed to be 
moisture barrier for inside vapors, and an exterior weather and 
vapor barrier which is created using 
closed cell extruded 
polystyrene insulation boards, special assembled with joints sealed, to create a non-permissive insulation envelope of the 
enclosure. Another object of the invention is to provide waterproof and air / vapor-proof details, a new concept of flashing and 
sealant application around windows / 
doors and other constructive elements to avoid thermal bridges and air leakage inside thermal envelope and wall 
assembly. Methods of installation are included.