ترجمعه قسمتی از درس پودمان پنجم پارت دو کتاب دانش فنی تخصصی سال ۱۲ معماری داخلی.

A weather resistant barrier should always be used when installing product over rigid 

backwall, wallboard, plywood, paneling, or wall sheathing. General Shale recommends 

the use of two weather resistant barriers for exterior applications and/or a drainage-type 

system behind the thin veneer with a drainable panel, flashings, weep holes. Check your 

local codes prior to installation.