Foil bubble Foil is comprised of one layer/two layers of polyethylene air bubbles sandwiched two layers of 99% pure aluminum foil. The polyethylene encapsulated air bubbles serve as an effective thermal break as well as vapor barrier, while the two outer layers of aluminum reflect up to 97% of all of the radiant heating energy. 
characteristics:
LXW: 50/40X1.2M (custom also available)
Thickness: 3-4mm (single bubble), 6.8-8mm (double bubble)
Bubble diameter: 9mm/10mm/25mm (big bubble)
Weight: 
single bubble:250g/m2,300g/m2,etc
double bubble:320g/m2,350g/m2,400g/m2,etc
Types: foil single bubble foil, foil double bubble foil, foil single bubble,etc
Benefits and applications:
(1) 97% radiant heat reflection 
(2) vapor barrier, thermal barrier, radiant barrier, moisture barrier 
(3) damp proof, fire proof-radiant heat transfer, reduce air infiltration 
(4) residential construction and retrofit: walls, basements, floors, ceilings, roofs, attics, crawl space, garage door and warehouse 
(5) commerical and agricultural construction: poultry houses, hog and dairy barns