LR072856 High Mounted 3rd Brake Light - what sealant/silicone adhesive to use?

My advice. Wear eye protection. See what you can do about stopping shards entering the door cavity. I had an annoying piece stuck inside the door that rattled each time I opened and closed the boot until I removed it via the door card.

And use more sealant than you’d ever think reasonable.

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Originally Posted by Eric SDV6SE

It will be therapeutic

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Ha you're right. I should just wait til I'm angry with the car...

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Originally Posted by Stuart02

Ha you're right. I should just wait til I'm angry with the car...

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If you'd had it fitted by my windscreen guy you wouldn't have any difficulty removing it![biggrin]

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Originally Posted by Jpdv

Forget 227. Sikaflex 296 is the professional marine glass bond. If that doesn't stick, there's something wrong with your process. It's rated as suitable by the international maritime organisation... That's an approval for where people might die if it fails... (I build wooden boats as my other passion). 3M also do some outstanding adhesives with a bit of flex/temp 'give' in them, but not sure which one would be right for glass/acrylic. The one that is used on wood is affectionately known as 'the devil's toothpaste' - once it's cured, most boatbuilders accept that the bond is unbreakable if you want the substrate to survive...literally - you cut it out and start again.

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The issue is that while I want it to stick, I also don't want to shoot myself in the foot the next time I have to remove it. These lights have a tendency to get small cracks and leaks over time so it will need to be replaced again in the future. I need a sealant that will hold it as firmly as it needs to be held, but no extra to be a pain to remove again later on.

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Originally Posted by twr7cx

The issue is that while I want it to stick, I also don't want to shoot myself in the foot the next time I have to remove it. These lights have a tendency to get small cracks and leaks over time so it will need to be replaced again in the future. I need a sealant that will hold it as firmly as it needs to be held, but no extra to be a pain to remove again later on.

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Only if you bash into something and break it. There is no half sticking with these things only all or nothing. It’s the equivalent of a windscreen.