Evo-stik bath and kitchen sealant - not very good

Just thought I'd post up some findings on this product since its expensive, water based, yet makes some fairly robust claims to be better than silicone. i.e. stronger, 30% more flexible. But its a bit cr*ppy to be honest.
First time I used it was to seal the joints between worktop and upstand (both matt white) in my kitchen as silicone stood out too much. It's been on for close on a year and no problems with it there.
I was sufficiently impressed with the ease of use (and lack of pong) over silicone to give it a try sealing the bottom rail of a quadrant shower enclosure to the tray. It doesn't cure very quickly at all (first problem) - so I actually left it alone for a whole week. My prep was very thorough too. That was about 5 months ago and a small section has just failed last night. Bear in mind this is outside the enclosure so isn't taking the full force of the power shower either (though it will mean standing water under the rail which is probably what has finally got to it).
There are some negative trade experiences on the Screwfix site.

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