Funny thing is I did a lot of roofing and some remodeling when I was 17 - early 20’s while trying to figure out what I wanted to be when I grew up (still haven’t figured it out and now disabled lol)…
A basic roofer needs a about $20,000 worth of tools, equipment, transportation, professional liability insurance premiums, registration fees and a few other things… And you now own your own basic roofing company ready to pay roofer wages…
A basic C tech mechanic needs about that much just in tools to start off in the business just doing steering and suspension, brakes, basic external engine work some electrical and a few other minor stuff, without having to always be borrowing tools from other guys in the shop… That includes quality tools but a cheap box, some boxes alone are over $20,000 with NO tools…
One of the last shops I was working at if you took all 5 of the B & C tech guys tools they still didn’t have half of what I have sitting in my home shop… Now a A tech has to have wayyyy more tools with all the specialty stuff out there… My buddy is an basic A tech and his scanner alone is over $6,000, doesn’t include updates… And BTW this is all just to work for someone else… Hell an alignment rack and machine and everything needed to do alignments NOT including tools to do the work is $40,000 and up, I signed for an alignment machine and new rack back in 2005 that was $65,000 and it was still in boxes, still had to pay for the rack install and stuff…
If I had to replace all my tools today, it would be close to $100,000 or more (stuff is expensive now) in tools alone…
A shop has to have very large oil (& coolant depending) recovery tanks plus have them pumped once a week or so, coolant flush machines, AC equipment, not just the recovery/vacuum etc, diagnostic equipment, lifts for the bays, transmission jacks, a few floor jacks and a lot of jack stands of different sizes, heck I got 2 floor jacks and 8 jack stands plus 4 custom built tall jack stands and 4 ramps, plus a shop will need all kinds of specialty tools not to mention large high volume/pressure air compressors/tanks, welders, oxy-acetylene torches and the list goes on and on… I’m sure some of the other pros can add a few things I forgot…
The start up cost for an automotive repair shop is around $60,000 to over $250,000 depending on how big the shop is and the tools you need, depending on what services you offer (remember the $1,000,000 shops with out of date alignment machines lol)…
Yes you can have a few cheap tools and do some work on cars a little, but I can also tear off a roof and install a new one with a hammer, ladder and shovel to remove the old roof and use a pick up truck to haul off the old roofing…
Now what were you saying about roofing vs being a mechanic??? Remember, I have done both, and I have been on a roof with snow on it and also when it was 130F on it… If a roof is high or steep enough, you tie yourself off with a safety harness incase of a fall, so not MANY dangers… You have a radiator hose blow on you under pressure at full operating temp and you are at minimum going to the ER with 3rd degree burns, seen it a few times, not to mention working on a running engine looking for noises and or looking for leaks etc, cars can fall off lifts, jacks can break, cars can slip off jacks, brakes can fail, slip in oil, etc etc etc…