I've used 45 minute (easy sand) hot mud to mix a medium firm yet wet - thick enough to be firm but soft enough that I create mud biscuits (mud studs) on sheetrock that I lay directly only concrete wall. Phase 2 - due to layout, I was mixing easy sand 45 minute WITH cold water - thicker than normal as I needed to put the mud on the walls and then slap the sheetrock on. I needed it fairly thick so it was a tad dryer than normal.. After letting it slack for like 5 minutes, I did add a tad of water. Long story short, it fired off way too quick than I expected.... So off to buy Easy Sand 90. Hopefully it will do the trick AND OR is the lack of water making it fire off quicker-too quick regardless. I've got a ledger board I plan to screw and support the sheetrock to as the mud sets.

We are currently converting a 24x24 steel pole barn into a heated workshop. The rafters were set 4' on center and the walls are 10' high. In discussing how to handle the ceiling, we decided we liked the look of the pine t&g and felt it would be strong enough to handle the 4 ft span with blown in insulation on top of it. Are we way off base? and if this can be done, I am guessing that I should be using screws to attach the boards? We were looking at what the local Menards calls "carsiding" in an 8" width. Thanks!!