They also went on to note that they thought most of the effect was due to the radiant barrier aluminum foil reflecting the infrared radiant heat coming down from the metal roof.
Foil roof insulation philippines.
The insulation foil face up is supported by a network of 16 gauge galvanized tie wire.
Holes are drilled in the purlins and the tie wire in threaded through the purlins.
Some folks on one of the philippines expat forums noted that although thin the insulation was pretty effective.
5 16 nominal thickness of foil bubble insulation highly reflective foil facing acts as 100 vapor barrier dimension 1 meter w x 50.
The holes are positioned so as to leave a 1 2 air space between the foil and the underside of the roofing.
Bubble insulation roofing insulation.