[poole bay]

Any one no of what best sealant in a tube that I can seal bottom of bulk head as water is going under van carpet in my t5 some think that will go off really good .

[DaveG]

How big is the gap Carlos? In my old van I used bathroom silicone, then painted over it.

[Smudger]

A good quality silicone sealer
You can get aquarium clear or black sealer off eBay

Darran

[poole bay]

Iv used silicone before and it still leaks need some think that will grip and move that will stick to anything

[PoleKing]

An adhesive wont do the job of silicone and vice versa really.
Try fixing first with 'pink grip' it's the best adhesive I've ever used.
Then seal with silicone after to make watertight.
Post some pics if that doesn't work.

[SPE]

I protectakoted the floor in my van and about a couple of inches up the sides, before I did this I sealed the bulk head joins and any other areas of concern with self adhesive lead flashing tape and then painted protectakote over it.

[poole bay]

Thanks

[p1w1]

simply fill the gaps with sealant and then protectkote over it  

[GoodFella2006]

Flashing tape is a very good idea.Thanks Posh.

[bobplum]

stop the leak.......no thats not the name of the sealant,
 just stop all your leaks

[Smudger]

stop the leak.......no thats not the name of the sealant,
 just stop all your leaks

Best answer yet 

[SPE]

stop the leak.......no thats not the name of the sealant,
 just stop all your leaks

Best answer yet 

in an ideal world 

[traps7]

stop the leak.......no thats not the name of the sealant,
 just stop all your leaks

Best answer yet 

Spot on - both of you.