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<blockquote data-quote="Rudy" data-source="post: 3636966" data-attributes="member: 568035">The ² versions use a butyl adhesive but they use Mylar instead of aluminum foil. Aluminum foil is a constraining layer and dramatically enhances the effectiveness of the product. Mylar just holds the goo in and adds nothing to the sound deadening capabiliteis of the mat - a very serious functional compromise.Just to maintain a perfect record of ED not being sound deadening wizards, there have been several reports of the butyl v1² falling off of vertical and inverted surfaces.&nbsp; This is an absolute first in butyl adhesive products and frankly, until I saw it with my own eyes, I didn&#039;t think it was possible. In testing, the adhesive bond strength is by far the weakest I have encountered. For some reason the Mylar used on that version has such a strong curl that if the adhesive gets warm at all the Mylar literally pulls the mat off of the sheet metal.Might ED have fixed this in the last few months? Who cares? First they sell asphalt and claim it is butyl. When they can&#039;t get away with that anymore they switch to butyl but use Mylar to save a few pennies. Since they obviously do no testing at all before introducing new sound deadening products to the market they ship a bunch of self detaching mat to customers and may well still be doing it. I think they have had more than their allotment of chances to get this right and customers should stay far away from eDead products.</blockquote>

[QUOTE="Rudy, post: 3636966, member: 568035"] The ² versions use a butyl adhesive but they use Mylar instead of aluminum foil. Aluminum foil is a constraining layer and dramatically enhances the effectiveness of the product. Mylar just holds the goo in and adds nothing to the sound deadening capabiliteis of the mat - a very serious functional compromise. Just to maintain a perfect record of ED not being sound deadening wizards, there have been several reports of the butyl v1² falling off of vertical and inverted surfaces. This is an absolute first in butyl adhesive products and frankly, until I saw it with my own eyes, I didn't think it was possible. In testing, the adhesive bond strength is by far the weakest I have encountered. For some reason the Mylar used on that version has such a strong curl that if the adhesive gets warm at all the Mylar literally pulls the mat off of the sheet metal. Might ED have fixed this in the last few months? Who cares? First they sell asphalt and claim it is butyl. When they can't get away with that anymore they switch to butyl but use Mylar to save a few pennies. Since they obviously do no testing at all before introducing new sound deadening products to the market they ship a bunch of self detaching mat to customers and may well still be doing it. I think they have had more than their allotment of chances to get this right and customers should stay far away from eDead products. [/QUOTE]

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