Best sealant for firewall joins

[steveG]

The sealant is falling out of the joints on my county so I'm going to redo them before I paint the firewall.

A search brings back plenty of references to Sikaflex, some for silicone sealants, but nothing specifically firewall related.

So....whats the best sealant to use on 110 firewall joints?

It would need to be flexible, paintable, stick like crazy, and not affected by fish oil/lanoline.

Steve

[Didge]

It would need to be flexible, paintable, stick like crazy, and not affected by fish oil/lanoline = baby poop; from memory that sticks to everything .
I'd be wanting to use the same stuff they use in the original seals between panels. Someone told me but I forgot the name: flashtak or something like that? Perhaps a panel beater could tell us. Wouldn't sikaflex remain too flexible? I don't know the answers but apparently the stuff the manufacturers use is available through certain outlets

[RobHay]

Go to your Hardware place and have a look at their Sikaflex range....there will be one there to more than suit your needs...........Sikaflex...! ! I just luvs ya.

[Bundalene]

Sika-flex 227 Body sealant is about as good as you can get.

Once you open the tube the shelf life isn't all that long - a matter of weeks even if you cap it.

Erich

[Scouse]

Drip Chek's the go:
3M US: Drip-Chek Sealer (http://www.3m.com/Product/information/Drip-Chek-Sealer.html)

[DeeJay]

If you want to remove panels ie floor panels, try to use glad wrap on one side of the sealant you use, works a treat, especially with sealastic.
I'm reassembling a firewall at present & will use that heavy black bitiminous sealer, doubles as a sound deadener.

[lardy]

like what rob said i used sika on my bulkhead replacement

[steveG]

If you want to remove panels ie floor panels, try to use glad wrap on one side of the sealant you use, works a treat, especially with sealastic.
I'm reassembling a firewall at present & will use that heavy black bitiminous sealer, doubles as a sound deadener.

Thanks for the floor panel tip Deejay.
I thought of using that bituminous sealer, but wasn't happy with it for the engine side of the firewall as its not resistant to oils etc.
It would be fine on the cabin side though and is easy enough to remove in the future if required by using a solvent soaked rag and a scraper.

I think I'll hit the seams with some penetrol or fish oil to soak into them as much as possible, then once thats dried use the sealant, paint over it and then install some insulation on top.

Steve

[Didge]

Drip Chek's the go:
3M US: Drip-Chek Sealer (http://www.3m.com/Product/information/Drip-Chek-Sealer.html)

That's the one I was trying to think of, doesn't sound much like flashtak though does it?! Apparently it's the bees knees. :p