www.ultimatehandyman.co.uk

Posted: **Tue Jul 02, 2019 11:44 am**

Hi all,

I was told my builder will be using Mapei tile adhesive and yesterday realised he brought some Ultra Trade Slow Set Flexible S1 Tile Adhesive White from god knows where?

Does anybody have any experience with it? I can't find any reviews of it. Not a single one. Do I really need to spend my own money and buy new, proper adhesive?

It will be layed in a screed floor (with underfloor heating).

Thanks,

Posted: **Tue Jul 02, 2019 2:41 pm**

Spec sheet here says 16 hours to set, says its stronger
https://www.ctdtrade.co.uk/media/conten ... 1_SLOW.pdf

Posted: **Wed Jul 03, 2019 4:25 pm**

Probably needs a slower setting adhesive due to the current hot weather and the underfloor heating. Nothing to be concerned about.