Canvas convertible roof

[LondonSW7]

Hello,

What would you recommend to revive and re-water-proof the canvas roof of a convertible?

A quick google reveals that Renovo ( http://www.renovointernational.com/ ) and the Autoglym kit ( http://www.autoglym.com/enGB/product...l.asp?v06VQ... ) are the most popular choices.

Has anyone got experience of using either?

Thanks!