I need to seal small gaps between ali panels that are powdercoated black,is normal silicon sealant ok to use or is pu adhesive any better?

PU is what you need i repair buses for a living and that's what we use
Jacko

tiger seal.

Dave

Brush on seam sealer.

pu is the best which tiger seal is just a brand name . brush on seam sealer is not a good idea it drys hard and hs no addesive qualitys pu will stick it down seal it water tight and give the car more strength!!

Check out Poundsaver for roof and gutter sealant. It seems to be PU rather than silicone and at £1 a tube one helluvalot cheaper!

Caber