The first option has a foil surface on both sides while the second option has foil on one side and white on the other.
Single bubble double foil insulation.
Single bubble is an 1 8 thick single layer of bubble insulation primarily used in warm climates.
Radiant barrier composed of 1 layer of 5 32 inch 4mm polyethylene bubble sandwiched between two metalized low emissivity surfaces.
Unlike the regular foil it has bubble wrap sandwiched between the foil.
We do not offer double bubble wrap because we aren t able to justify its pricing relative to prodex total or single bubble wrap insulation.
This bubble wrap whether a single layer or a double layer slows down the flow of heat.
Airtec single bubble reflective double foil insulation by ybs 1 2m x.
From the research i have done a k 19 value equals an r 5 6.
We offer this in two different options foil foil and foil white.
Airtec single bubble double foil insulation by ybs 1 05m x 25m.
Airtec double is a multi layer foil bubble laminate coated with polyethylene to provide a corrosion resistant insulation system.
This item single bubble insulation foil foil 4 x 125 500 sq ft us energy products nasatech 48 x 125 single bubble white reflective foil insulation vapor barrier 1 8 insulated metalized mylar double foil bubble 48 x 125 per roll.
From 107 91 ex vat.
Airtec double is a high performance material which acts creating a low emissivity air space below the floor thus reflecting the heat back.
The above items are single bubble insulation.
So by that logic if you wrap ducts with the double bubble foil then you would have your r 6.