I am installing a new bathroom in my basement, (50 year old house)it will be near the basement floor drain, so there is about a 2in - 2 1/2in slope from one side of the new bathroom to the other. As well as some troughs/valleys to the drain. I am putting in a tile floor, so I need to eliminate the valleys and at least a good portion of the slope. I know there are self levelling compounds out there, but I don't want to spend 500$, in talking with a quikcrete rep, I have decided to put down a bonding agent then use crack resistant quikcrete and trowel to an acceptable evenness, anyone have any thoughts or experience on this. I am a carpenter by trade, and all these self levelling compounds seem like they are unnecessary it your handy with a trowel and have the time. any info or guidelines would be appreciated. thanks
also, should I use a product like redgaurd membrane before thinsetting the tile?