I found it hard to get Tigerseal that was in date.
I used Evostick "Sticks Like Sh*t". Top stuff but clean up is a bit messy, it sticks to everything.
Make sure you have white spirt on hand if you use it.
http://www.screwfix.com/prods/22070/Sea ... KE-_-22070" onclick="window.open(this.href);return false;
Bonds to porous, non-porous and wet surfaces Works under water. Suitable for interior and exterior use.
K