Softop Waterproofing...

[Mike Wattam <MikeWattam@domain.elided>]

Hi Chris

The hood material is actually a layer of mohair, a centre 'membrane' of
waterproof rubber, and another layer of mohair.  When the rubber gets old,
it has micro-holes develop in it so that when touched from the inside, the
rain comes straight through.  As this condition progresses, the holes get
larger and 'hard, rain tends to come straight through without human
intervention.  You can check the condition of your material by looking up
through it in strong sunlight.

Unfortunately there is no certain cure for this malady other than fitting a
new hood.  There is 'goo' on the market, but as you state they do just tend
to colour rather than seal permanently.

Or you could just accept that any soft top is merely an oddly shaped
umbrella and is only going to keep some of the rain off.

Mike Wattam
Triumph Stag Register