Calculating perm rating at increased thickness.
If a product has a perm rating of 5 at a 1″ thickness. What is the perm rating at 10″ thick? Is the math as simple as taking the perm per inch and dividing by thickness or is the relationship non-linear? What happens when you add a coat of primer and two coats of latex paint?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part