Which double sided tape to mount spoiler?

[rorywquin]

I purchased a spoiler from MB which has DS tape already mounted. there are a couple of little spots (this is a shop soiled item from their used parts shop in Germany) where the backing on the tape has moved and are no longer sticky. I want to buy some 3M VHB but there are several choices - eg PT1100 or 4941.

Anyone with thoughts on the correct item?

 

[KennyN]

I used this to stick the rear spoiler and front splitter onto the BM and they are solid, just get it right first time as I mis aligned the bumper protector on the Subaru and it was a nightmare to remove.

https://www.ebay.co.uk/itm/3M-VHB-5...&_trksid=p2060353.m2749.l2649&redirect=mobile

K

 

[A.J.]

I used 3M on my number plates and they are on there for ever. It's the red DS tape about 1/2" wide in old money

 

[rorywquin]

I used this to stick the rear spoiler and front splitter onto the BM and they are solid, just get it right first time as I mis aligned the bumper protector on the Subaru and it was a nightmare to remove.

https://www.ebay.co.uk/itm/3M-VHB-5...&_trksid=p2060353.m2749.l2649&redirect=mobile

K

Thanks that is what I was looking at.

 

[John Laidlaw]

Use 3M 4298 adhesion promotor as well as the 4611F double sided tape then it’s going nowhere, done it with the SL and the E63 worked beautifully

 

[SmartAmg]

Use 3M 4298 adhesion promotor as well as the 4611F double sided tape then it’s going nowhere, done it with the SL and the E63 worked beautifully

I took John's advice on the above, he's right, the spoiler ain't going nowhere.

 

[rorywquin]

Use 3M 4298 adhesion promotor as well as the 4611F double sided tape then it’s going nowhere, done it with the SL and the E63 worked beautifully

Does the adhesion promoter damage the paint? I'm not sure why I'm concerned but who knows, I might want to remove teh spoiler.

 

[SmartAmg]

Does the adhesion promoter damage the paint? I'm not sure why I'm concerned but who knows, I might want to remove teh spoiler.

No, because when I fitted my spoiler, I didn't quite get it spot on, and me being a tad OCD it had to come off, and 2nd time I got it Bob on, it was on about 2 weeks and the paint was fine.

 

[John Laidlaw]

As Tony, no.
I masked up the area to aid placement and also being OCD used some IPA preparation first too.
Probably OTT but if anyone saw the spoilers I fitted they were completely central and looked factory.
Admittedly I’ve never taken one off, both times the intention was for them to stay on ‘for life’

 

[A.J.]

I had my registration plates fixed with 3M DST for about a year and decided to replace them with simpler, cleaner plates and re-fix with 3M DST, no marks on the paintwork at all.

 

[rorywquin]

Struggling a bit to find the right thickeness - I measured the existing tape (with a vernier) and it is ~1.5mm to ~1.6mm thick so hoping to find same thickness - most of the recommended tapes are 1.1mm. I might strip all the existing tape and replace with new.

A lot of the 3M tapes only need adhesion promoter on the plastic and will stick to the paint (properly cleaned).

I know .4mm is not much but call me ocd!

 

[KillerHERTZ]

Ive never found any tape that will keep one on in the mid summer heat (black car). I used SikaFlex (from Screwfix).

 

[SmartAmg]

Ive never found any tape that will keep one on in the mid summer heat (black car). I used SikaFlex (from Screwfix).

You, ain't tried 3M VHB tape,
then.

 

[rorywquin]

You, ain't tried 3M VHB tape,
then.

Agree - I've had a roll of the clear stuff for years (mostly used for mounting servos etc in composite model planes) and once you stick it down, it ain't coming off. It's all in the surface preparation.

They are assembling busses and trains using VHB in place of rivets and it is stronger.

 

[SmartAmg]

Agree - I've had a roll of the clear stuff for years (mostly used for mounting servos etc in composite model planes) and once you stick it down, it ain't coming off. It's all in the surface preparation.

They are assembling busses and trains using VHB in place of rivets and it is stronger.

Your right, Rory, preparation is the key! (Get it)

 

[EmilysDad]

I thought spoilers etc were glued on with Sikaflex/Tigerseal ..... they stick like the proverbial to a blanket.

 

[rorywquin]

I thought spoilers etc were glued on with Sikaflex/Tigerseal ..... they stick like the proverbial to a blanket.

It is an OEM spoiler from the MB (used parts / shop soiled) shop. It is pre-mounted with double sided tape - little areas have had the liner moved and have lost their stickiness - hence my need for some.

The manufacturers prefer something with instant grip - glues etc would need to be held in place while while it sets.

 

[EmilysDad]

It is an OEM spoiler from the MB (used parts / shop soiled) shop. It is pre-mounted with double sided tape - little areas have had the liner moved and have lost their stickiness - hence my need for some.

The manufacturers prefer something with instant grip - glues etc would need to be held in place while while it sets.

I realised why you needed tape, but just surprised it was stuck using tape in the first place.

 

[Rob76]

Make sure to warm up the spoiler / tape first if you can - it will fit better to the form. Clamp in place for a few mins after.....
That's how OE stuff is fitted