I too endorse wyosteve's recommendation to avoid getting the floor. In winter weather you can track all the mud and snow possible into a tent with no floor and in short order the wood burning stove will have that mess perfectly dry and no problem. I use a 6 to 8 foot carpet runner beside the cot which is easily shaken clean daily and as far as having the tent air and rodent tight as possible that's what the sod flaps at the bottom of the tent's walls are for.