Frozen ground only means we have to beat the tar out of the 10" nails to get them into the ground... but we do it. See that little tag on the backside? we put it there so your neighbors know who made your skirt. I like the fit and I'm betting the customer will like the $$$ saving on the propane. Did we mention you get warm floors with a skirt on, yeppers that's what the ladies have told us.