Originally Posted by
Tartan
What is the under flooring? If it is cement slab then I would go either carpeting or wood laminate with the cushion and vapor barrier under neath for warmth. If you have a heated basement under neath, then go with something firm so you don't get marks from your chair rolling or your cupboard containing your fabric stash. I like the carpet in my sewing room because it cuts down on the threads traveling outside the room.
Another alternative if cement slab is to go with wood or laminate but under your sewing area put a floor heating pad underneath your machine. They come in small sections and only cost pennies a year. That way your feet will be warmer than with carpet.