Originally posted by @Adam Olguin:
@Michael Rutkowski
What kinds of materials do you see being more readily available and more affordable?
Right now, steel is slightly cheaper than lumber, but wow, both are expensive these days. In the past two years, lumber has gone a little crazy. Steel has seen a recent sharp spike in price, but like I said, this spring from what I hear from metal building suppliers, they seem to feel as if steel will crash, and that would make those types of buildings more affordable. But I follow this story, and am not so sure, as you can read about here: https://www.reuters.com/articl...
So then we've got concrete... Concrete has also been going up in price, I got hit with an $800 bill for 5 yards a few weeks ago, which seemed outrageous to me, because we handled all the work, and this was just material cost. So this will most be affected by the price of diesel fuel. And I do believe that the price of diesel will go up UNLESS there is some sort of electric vehicle subsidy. Why? well supply and demand. If most drivers switch to electric because of subsidies, then there will be an excess of oil on the market which can be made into machine fuel (diesel). So that will affect the price of all building materials, but especially concrete, because concrete is heavy, and labor intensive, and so machines pick up the slack there.
Another material I've been watching is CLT's, or cross laminated timbers. Now these are a lumber derivative. But the savings doesn't come from the material, but the labor. They can be used in the place of concrete, steel, and you can even circumvent some fire codes, as they are highly fire resistant. They are easy to work with using saws and drills, and look good, eliminating the need for drywall, in my opinion (some won't agree with me on this and that's their opinion). Insulation on those is usually just a radiant barrier in the south, and some foam and siding in the north. I am thinking really hard about using this material in a future project, using it for stairwells, elevator shafts, and the entire structure. I like wood the best out of all materials.
Another unique material, highly dependent on the price of oil is SIP panels, and those are pretty cool. Again you are saving on labor, because they don't require insulation, since they are insulation by nature, and have some good structure to them. If you are doing a single story, these can be the ticket. They even come pre-channeled for plumbing and electric. I would love to find a modular home builder (who can deliver to my area) that builds, strong, efficient, and modularized structures, utilizing these.
For foundations, especially in the north country, we need to get way down, like almost 5' deep for a footer + stem wall. If you have ever done a concrete wall, you will know it is a ton of labor. Labor is a huge cost too, besides the material. You've got to dig, using diesel, build footer forms which use lumber and labor, move the forms with a knuckle boom (unless you're the Hulk) which uses more diesel, then build steel rebar cages which uses material, diesel, and labor. THEN you are ready for concrete (in 2 pours), which is very diesel and material intensive. This is how it is traditionally done... So I've got a better way of course!
If you could combine a modularized material, plus a helical pile, now you can really save on labor, and materials. These are drilled into the earth well below frost line, and can hold a lot of weight. In my opinion, they are superior to all other foundation forms for smaller buildings, up to a single family SFH. I believe in this technology so much, that I almost purchased a franchise for my area with one of the major suppliers of the machines and piers. In my main niche, land and cabins for STR, you just can't get a concrete truck up on the mountain, or way the heck out, they will just say "no thanks" to your business... So this would save a lot of money, if I owned the machines and helical piles, plus some side business installing for others.
Then another way to save on materials is the ancient method of pole building. There is so much out there on pole building, I don't want to even touch on it. But you can google barndominiums, and get started there. Basically the biggest caveat here is not materials or labor, which are quick and easy with this method but bank financing. Banks are going to want some comparable data, make sure the building has a foundation in some cases (eliminating the whole purpose of building like this), and so the best way to build out this way is with cash. While some of these buildings fails in high winds and huge snowloads, that's more of a function of engineering. Basically, don't cheap out on trusses, keeping them to a max of 4' apart, no matter what the pole builder says. But these buildings can provide a huge interior space for a minimal amount of materials and labor. The Amish can build a shell in 3 days, I've seen a time lapse video of it. If you think about it, these are excellent set ups for multi-family buildings, limiting the surface area, and therefore the maintenance, needed on your structure.
I hope that helped a bit. Sorry for the essay, I stay up at nights looking at different ways to build, and saving money.