[VAL] Sealing seams internally

["Anthony Slocock" <anthony@xxxxxxxxxxxxxxxx>]

I'll chime in here as I have not seen anyone answer this yet.

Airstream use Sikaflex 221 internally, to seal all sheet joints, around
light fittings, window/ roof vents etc. before the trailers go in the water
test area.  It is liberally applied as additional protection against
leakage - a very sensible practice in my view, IF you happen to have the
inner skin and insulation competely removed during a rebuild.  The 221
product comes in cartridges like any mastic, although Airstream buy it in
bulk and its applied using a plastic spatula (I think).  You can buy it in
single tubes from Airstream, in bulk from a supplier like JPC Specialities
in Philadelphia (800 220 4404), or your local hardware specialist no doubt.
For more info, the technical team at Sika Corporation are very helpful - 248
577 0020.

Anthony Slocock
eurostream.co.uk