I took a whack at installing some granite tile tonight and ended up aborting the process. I mixed up a 12.5 pound box of Henry brand MarbleFlex 316 thinset mortar. It called for 1.5 quarts of water, and I mixed it well with a drill/paddle.
When I applied it though, it dried in a HURRY. Should I have wetted the Hardibacker before troweling on the mortar? The consistency looked good to start, but man did it dry out - even in the bucket - in a real hurry. It was crumbly after 10 minutes tops.
Does the temp of the water matter? Should I wet the backs of the tiles and the floor first? Thin the mixture, even though it says not to on the box?
Thanks.
JP