Unvented Attic Applicaiton: Spray Foam Specs & Details You are hereYou are here: Home / Products / Product Portfolio - Residential / Unvented attic / Unvented Attic Applicaiton: Spray Foam Specs & Details Public Information 3-Part Specifications See products for relevant 3-part specs. Design Details Classic Max and Classic Plus Unvented Attic Assembly ProSeal Unvented Attic Assembly Other Information Insulating Attics in Canada - Icynene Building Science Conversion of Vented Attic to Unvented Attic - Step-by-Step (PDF)