 Trim sealant, What is being used? |
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| Morph914 |
 Feb 21 2021, 08:05 PM
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#1
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Member  Group: Members Posts: 435 Joined: 22-August 16 From: St Augustine, FL Member No.: 20,326 Region Association: South East States 
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I am getting the targa trim pieces ready for reinstall and am wondering what is being used to duplicate this sealant on the backside of a lot of the trim. I was very impressed at how soft and pliable this original sealant was after 48 years or so.
Thanks in advance, John  |
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Replies(1 - 10)
| JeffBowlsby |
Feb 21 2021, 08:56 PM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,524 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Its a black butyl-based sealant.
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| bbrock |
Feb 21 2021, 09:11 PM
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#3
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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3M Weatherstrip Adhesive or tape is pretty close. I don't know if it is butyl based but stays flexible and tacky like butyl.
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| gms |
Feb 21 2021, 09:35 PM
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#4
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Advanced Member Group: Members Posts: 2,695 Joined: 12-March 04 From: Chicagoland Member No.: 1,785 Region Association: Upper MidWest
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3m
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| wysri9 |
Feb 22 2021, 02:43 AM
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#5
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Member Group: Members Posts: 199 Joined: 23-August 13 From: Aberdeen, Scotland Member No.: 16,291 Region Association: England
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I used a 3m double sided foam tape which is super sticky and very clean to use compared with a mastic. It is used here a lot in window construction and is super effective.
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| wonkipop |
Feb 22 2021, 04:10 AM
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#6
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Advanced Member Group: Members Posts: 4,371 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille
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sikaflex is a butyl based sealant.
been widely used in the building industry for half a century. stays flexible for a long time as it skins over only on surface exposed to air. is black. sticks like (IMG:style_emoticons/default/stromberg.gif) to a blanket. i'm guessing that is what stuff still on trims might be. there is also another sealant that was used in the 70s for glazing in buildings. even today when you pull 70s glazing apart it is still flexible, sticky and liquid almost. its got a name? and i think it is referred to as mastik these days. but it did have a different name back then. it doesn't cure over time and go hard like modern silicone based sealants. its real messy stuff. sikaflex can also be pretty messy if you are not careful. though usually you can use water to wipe it clean. usually applied using a glove with a bucket of water (with a tiny bit of detergent mixed) beside you to finger work it then sort of wipe it clean. |
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| Morph914 |
Feb 22 2021, 06:21 AM
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#7
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Member Group: Members Posts: 435 Joined: 22-August 16 From: St Augustine, FL Member No.: 20,326 Region Association: South East States
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Thank you all for the replies, I have the 3M super weatherstrip adhesive, but it is messy and hard to work with around new paint. I like the idea of the tape, Im going to research it a bit more.
Cheers, John |
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| robkammer |
Feb 22 2021, 07:34 AM
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#8
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Member Group: Members Posts: 179 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: North East States |
I am also a fan of the 3M VHB tape. Butyl can be a real mess. At least with me! 3M has many grades of VHB (Very High Bond) tape. U-Line is a good source or your local Auto store.
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| iankarr |
Feb 22 2021, 07:58 AM
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#9
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,480 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region
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Strip caulk- butyl strips - stretched thin
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| mmichalik |
Feb 22 2021, 09:51 AM
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#10
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MikeM Group: Members Posts: 700 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California
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QUOTE(iankarr @ Feb 22 2021, 05:58 AM)  Strip caulk- butyl strips - stretched thin Agree. I just put the trim back on my targa top and we used the 3M Butyl Strip (dum dum). Worked great, and is what the factory used. Similar to this: https://www.findtape.com/3M-08578-Butyl-Rub...BCABEgKHxPD_BwE not promoting the website in any way, just showing the picture. |
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| Morph914 |
Feb 22 2021, 10:37 AM
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#11
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Member Group: Members Posts: 435 Joined: 22-August 16 From: St Augustine, FL Member No.: 20,326 Region Association: South East States
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QUOTE(mmichalik @ Feb 22 2021, 10:51 AM) QUOTE(iankarr @ Feb 22 2021, 05:58 AM) Strip caulk- butyl strips - stretched thin Agree. I just put the trim back on my targa top and we used the 3M Butyl Strip (dum dum). Worked great, and is what the factory used. Similar to this: https://www.findtape.com/3M-08578-Butyl-Rub...BCABEgKHxPD_BwE not promoting the website in any way, just showing the picture. Thank you, this is perfect. Just ordered from Amazon Prime, be at my door tomorrow. I don’t need 60ft of this stuff, but if the original stuff is still soft and pliable after 48 years, maybe my grandkids will use it. Cheers, John |
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