Installation Guide

 Internal Reflective Air Spaces: Multi-layer reflective insulation requires air spaces
between the reflective layers to function at the optimum R-value.
 The folded crease on each side of insulation (located near the edge) should be un-
creased or is no longer completely flat. This will indicate that the layers have separated
internally or that air spaces exist between the reflective layers and the insulation facing.
 Make sure the insulation is cut so that it fits snugly around the outlet boxes – the block
wall should not be visible around outlets or any penetrations. Taping is acceptable
where gaps exist.
 For cavities that are less that standard widths, the excess material shall be trimmed or
the over-lap must be to the outside of adjacent installed cavity.
 When there is a splice in wall cavity, the reflective insulation seam shall be butted, over-
lapped or taped so the wall is not visible.
GRADE 2 INSULATION – MODERATE DEFECTS
Grade 2 installation requires that the insulation be installed per Grade 1 with the following
exceptions.
 To attain a rating of “Grade 2”, wall insulation should cover most of the entire cavity. Thus
defects or areas not insulated (where the building envelope or block wall is visible from the
building’s interior) are greater than 2% but not more than 10%
.
GRADE 3 INSTALLATION WHEN THE ABOVE REQUIREMENT ARE NOT MET.
Updated: June 7, 2015
Open Fold
Flat Fold