How much does it cost to build a house using tar paper?

Answer 1

Without seeing the plans I can't tell you.

I can tell you how to calculate the price of the felt (it hasn't been made out of paper in a very long time--they call it "asphalt impregnated felt" or "roofing felt" now), though. Calculate the square footage of the roof, and divide by either 200 (if you're laying 30-pound felt) or 400 (if you're laying 15-pound felt, which is only really good if you're using three-tab shingles). Calculate the square footage of all the hardwood flooring you're using and divide by 400 (here you ALWAYS use 15-pound felt as 30-pound gives you no advantage) And if you are using felt on the walls under the siding, which means you're too cheap to use something proper like Tyvek, divide the square footage of the walls by 400. Each calculation gave you the number of rolls needed for each area. Add one more roll because you'll almost certainly need it, and multiply the number by the price of felt per roll in your area. 15-pound and 30-pound felt are the same price per roll almost everywhere--if a roll of 15-pound is $16.50, so will a roll of 30-pound be.