plural double standards. double standard. noun. plural double standards. Learner's definition of DOUBLE STANDARD. [count] : a situation in which two people, groups, etc., are treated very differently from each other in a way that is unfair to one of them. She argued that society applies a double standard in dealing with women who commit adultery.
Full Product DetailsBack to top. Wapsi Thin Fly Foam is a thin flexible fly foam great for even the smallest patterns. At 2 mm thick, thread will not cut through this tough foam. The Thin Fly Foam from Wapsi is great for chernobyl ants and terrestrials of all types. Pieces of different colors can be stacked and glued using our ZAP Foam Safe Adhesives.
Spray Foam is categorized into two types, open-cell or closed-cellâ. Open cell is lightweight foam that is flexible, and an excellent air barrier. Open cell foams most commonly range from .5 lb to .7lb densities. Closed cell foam is higher density foam, and a moisture barrier. Most closed cell foam used for insulation range from 1.7 lb to 2 lb. Closed cell foam can go up to 3 lb density which is often used in exterior roof applications (like the Superdome). The main differences between open and closed cell foam are moisture permeability, R-Value, and flexibility. Closed cell foam is a moisture vapor barrier. What this means is that it will not allow moisture to pass through the foam. Open cell foam is not a moisture vapor barrier, and will allow moisture to pass.