Barrier Bac VB-350 - Manual (Page 3)

Concrete Slab
Barrier-Bac Vapor
Retarder Membrane
Barrier-Bac Seam Tape
Select granular fill
(optional)
Coarse compacted
earth base
Select the suitable Barrier-Bac product (VB-250, 11 mil or VB-350, 16
mil) and ensure the installation surface is relatively smooth. Although
Barrier-Bac products are extremely tough, installation is easier and more
effective when done over a smooth base. It is optional to have a layer of
granular fill under the Barrier-Bac.
VB Installation Guidelines 2
Step 1B: Ground Surface Preparation : Aggregate Base
VB Products Installation Guidelines
IntePlus®  
IntePlus® xf film