Walls
Insulation blankets are typically hung from the eave to the base (floor).  Steel angle base or a wooden 2x4 is secured to the floor at the base (where the insulation blanket will meet the floor).  This provides an attachment point at the base to seal the bottom and to help with moisture and rodent problems.  The top of the blanket is typically nailed to wall girts (or wooden 1x6’s) with nails and plastic washers.  Blankets should be installed from top to bottom.  Installing from bottom to top can create unattractive wrinkles.  In some cases a 2x4 is added to the top of the wall set away from the wall the same distance as the insulation thickness.  The vinyl is then attached to the 2x4, allowing the insulation to hang down and be nailed.  Tabs are nailed to the post and the trimmings are stuffed into the opening between the post and exterior wall panel.  At the bottom, trim the fiberglass off the floor, fold the facing under, and secure to the base angle or wood.
Roof
The most common way to insulate the roof of a pole building is to place the insulation blankets at the bottom of the truss.  This is typically done by placing metal banding 30” apart down the length of the building.  Another common method is to install a metal liner panel
 
(similar to wall and roof panels) at the bottom of the rafters.  In both cases the insulation blankets are laid over the top of the banding or liner panel between the rafters. If steel liner panel is used the insulation can be unfaced.  If steel bands are used, a vinyl facing is used as a vapor barrier and for a finished look.  Install following the roof pitch. If you use wide blankets and install from the peak to the eave, banding can be applied. Any blanket thickness can be used, however, an airspace may be created between the roof panel and insulation creating a condensation. Another method is to install the blankets typically between the roof purlins supported with banding. The blanket thickness is usually determined and limited by the depth of the roof purlins. For High R-Values (up to R-49) both methods can be combined.