waterproof aluminium bitumen flash tape
 is aluminum foil coated with thick butyl rubber adhesive for weather sealing joints and seams. 
It is continuted by an adhesive of increased thickness, laminated onto a film of pure aluminum and disposable release sheet, which creates a strong bond with the protected surfaces.
 The adhesive forms a strong waterproof seal by the simply pressing the tape into place by hand.
Aluminium backing can be pure aluminium,also can be plastic PE strenth alumium.
Plastic PE Aluminium backing color can be silver,black,red and other color.
waterproof aluminium bitumen flash tape is a newly-developed outside anticorrosion protective material with strong self adhesive and UV resistance property. It always be called Aluminum foil Bitumen tape, water-proof tape and Room tape.

b:Length: 10mm  20mm  30mm  50mm
c:Thickness 1.0mm, 1.05mm
d:High Adhesion/Quick Stick
e:Extremely conformable foil backing.
f:Matches aluminum foil-faced duct systems and insulation.
g:For use in a wide range of temperatures.