Figure 19. Bare area on roof D5, looking southwest.
Figure 20. Cleaning the roof D5 Hypalon membrane before making cut D.
suggests that this moisture, which is located quite
the fibrous glass insulation would melt and, in all
some distance from the perimeter of the roof, may
likelihood, drip down into the freezer, thereby re-
have been introduced by air infiltration, not by
covering some of the insulating ability of the fi-
leaks in the waterproofing membrane.
brous glass. However, moisture in the upper layer
If this freezer is ever warmed up and allowed
of fibrous glass insulation cannot be expected to
to remain warm for a few days, some of the ice in
drain and dry this way.