How warm does it need to be to install Thin Veneer outside?

The temperature needs to remain at 40 degrees or higher for 72 hours to cure. We can recommend Laticrete Hi Bond Rapid which will speed up the cure time, but 72 hours is still advised.

There is a simple rule to follow when the temperature is low during installation: The 18º (8 ºC) Rule – for every 18ºF below 70ºF (8ºC below 21ºC), portland cement and epoxy based materials take twice as long to cure.