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Extruded Butyl "Rope"

I've often wished I could get my hands on some high quality butyl adhesive while working on a sound deadening project. I've wanted to put it between the outer door skin and the crash intrusion bars and inside the trunk lid to create ad hoc vibration dampers. I've wanted to do the same thing when bolting a speaker mounting baffle to an inner door skin - get some viscoelastic adhesive back there and kill two birds with one stone. Now we can all of those things and more.

You can stretch Extruded Butyl if you need a smaller diameter.

This is exactly the same material used to manufacture Sound Deadener Showdown CLD Tiles so it has all of the same qualities. It's extruded into a convenient 3/8 inch "rope" and comes in fifteen foot rolls. I’ll be very interested to hear all of the ways you think of to use this product. If 3/8" is too thick for your application, just stretch it until you have the thickness you need.

When I first decided to offer the adhesive in this form, I remembered that Parts Express sells something similar called Speaker Sealing Caulk. Don't get me wrong - I love Parts Express and I’m sure their product is ideal for the purpose for which they are selling it, but it definitely isn't the same thing.

In both pictures, Extruded Butyl Rope is on the left and Parts Express's Speaker Caulk is on the right.

A few cautionary notes: This stuff stays sticky forever. If you are going to use it in places that leave an adhesive surface exposed, you might want to consider hitting it with some paint, covering it with tape or just pressing some heavy duty aluminum foil into it. It is sticky to handle. It's not hard to put it in place using your fingers, but when it comes to pressing it down you'll find yourself pulling it back out when it sticks to your fingers. Each roll comes with a piece of poly coated kraft paper - use that to press and you will not have any problem.

Listen - w/o EBR	Listen - with EBR

Here's a demonstration of what it can do with a door. I've cut the inner door skin off, but you still can't see the Extruded Butyl because it is behind the intrusion bar. The red arrows show where it is. When using this material in places exposed to water, like your doors, don't completely close off the path that the water takes. Leave some gaps for drainage. You'll still want to use CLD Tiles for complete vibration damping.