The insulation foil face up is supported by a network of 16 gauge galvanized tie wire.
Foil roof insulation philippines.
Some folks on one of the philippines expat forums noted that although thin the insulation was pretty effective.
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The holes are positioned so as to leave a 1 2 air space between the foil and the underside of the roofing.
5 16 nominal thickness of foil bubble insulation highly reflective foil facing acts as 100 vapor barrier dimension 1 meter w x 50.
Holes are drilled in the purlins and the tie wire in threaded through the purlins.