Looking for total price (material, labor, O & P) for armaflex on refrigerant piping (for 3-ton split DX), probably 7/8" or 3/4". Contractor has it @ $14/LF, seems high.
Note: looking for price of insulation, not piping.
I bought a 10' stick of 3/4" just last week at the Home Depot for about six bucks, installed it and glued the entire seam in about six minutes. You can do the rest of the math.
R.S. Means Mechanical Cost Data, 2005, has the labor costs for closed cell foam insulation, 1/2" thick, for 1" pipe size at about $3.37/LF. If we add this to approx. $0.68/LF material costs and toss in O&P you could be at $6/LF. If you go with 3/8" thick insulation, it'll be more like $5/LF.