Roof underlayment question

Anyone ever used a product used in the roofing trade for ice damming protection? its a layer of thin aluminum with sticky rubber underneath
you remove the paper backing and stick it down.it comes in a roll 3'x50'
not more than 040. thick if I remember right about $40.00 a roll.I dont think the double layer at the seams would show thru the 040. skin I'm using for my roof.
David.
you remove the paper backing and stick it down.it comes in a roll 3'x50'
not more than 040. thick if I remember right about $40.00 a roll.I dont think the double layer at the seams would show thru the 040. skin I'm using for my roof.
David.