My experiments with shaving cream were a complete failure. I just hope that if I follow the inventors instructions, I will have similar results.
This says that a 10' x 15' x 4" slab would require 111 60-pound bags of concrete. I read that 4" is adequate for a shed. Each bag is $3.15 from the friendly neighborhood Lowe's, but they offer a 30% discount for 56+.
For a shed with an interior dimension of 10 x 15, I estimate needing 116 metal studs. They are $5.87 each, but they offer 17.5% off 70+. For the record, wooden 2" x 4" x 8' studs are $2.86, over $3 less each before the discount, over 40% less after the discount.
Without an overhang, the roof would be 12.09' x 15'. A six-inch overhang would make that 13.09' x 16'. Six pieces of plywood would be 12' x 16'. He has one 2x8 spanning the peak, from gable to gable, and two 2x4s halfway down on each side. I wouldn't want a nice peaked roof like his, but a 2" x 4" x 16' board is $6.23 and a 2" x 8" x 16' is $10.96, but the nearest Lowe's with one in stock is 155.1 miles away. Do you think they would understand me crossing the street and purchasing one from Home Depot?
15/32 CAT PS1-09 Douglas Fir Plywood Sheathing, Application as 4 x 8 is $22.65. Is that the right type and thickness? He used OSB, though.
He has 2 x 4s every two feet on the roof, on top of the plywood, running vertically. If I use a 12' board and then a short second board they would be $4.68 each. Another 2" x 4" x 16' on the bottom.
Then he had another layer of plywood.
A layer of Ice and Water Shield Leak Shield. Lowe's does not have it. I do not know if it is the same stuff, but Home Depot has something with the same name for $129, but also Ice and Water Shield Leak Barrier for $69. He used the more expensive one.
Huh. He said that he was going to pour aircrete between the layers of the roof, but he covered the gap with shield and felt. He needed to cut pieces of plywood to cover the gap, right? Since he built a crane to lift the gables I wondered if he would make some kind of pump, but it seems like he did not insulate it after all.
Where is the fun in that?
He could have built roof panels like the wall panels and lifted them with his crane, or you could use normal insulation. Rockwool is $65.47 for 8 23" x 47" batts. I think that three would be about perfect
Lowe's
$244.75 concrete
..558.35 metal studs
....18.69 2" x 4" x 16'
....10.96 2" x 8" x 16'
..317.10 plywood
....46.80 2" 4" x 16'
....21.43 roofing felt
......7.57 roofing nails
..196.41 Rockwool
..168
.....light grey shingles
Home Depot
$69 Ice and Water Shield Leak Barrier
That does not seem to include tax, which would make the total $1,800.18. He added a window. I would just want a door. I have not figured in cost for rebar, mesh, ties, the wall cement, the mesh for the wall panels, everything he uses to fasten the panels together, everything for stucco, and if the grandfather was going to use this as a workshop, it would need electricity!
Someone said that there are two types of concrete, concrete that has cracked, and concrete that will crack. I hope that using a "Jumping jack" would reduce that. Lowe's does not have tool rentals, but Home Depot does.
$67 Jumping Jack
..32 cement mixer
..12 bull float
I felt that I would need to more than three tools.
Heck! It is 0440!
Everything that I have priced adds up to $1,912. This would definitely cost over $2,000 before all of the aircrete tools.