I don't know or really care about Rising S Bunker. I never have even considered having a pro or some company build anything on my land from a shed, to a cabin and especially not the underground protective shelter many call a bunker on my remote WY mountain land.
I never could afford a pro or anyone to build for me. I barely was able to afford the almost 4 acres of land in 1987 which was $8,000 and today probably worth well over $50,000 not including any buildings I have built.
But I tell much with many pics in this thread >
https://www.survivalistboards.com/showthread.php?t=107463
There is or at least was a sponsor of this S-boards and I like about all that I have seen. IF I had plenty of money I would buy from them. > Posted on my everything about bunkers thread in May 2010 but he is still around: JC Refuge: If you're serious about prefab shelters or saferooms, have a look and get in touch with me ...
www.safecastle.com and his link and info packed blog >
https://blog.safecastle.com
Main links to his safe room and other protective shelters >>>
https://www.safecastle.com/pages/sheltershome
https://blog.safecastle.com/search/label/safe room
About rust proofing metal is I have used a couple gallons of Rustoleum and even at least a gallon of truck bed liner to rust proof steel beams, steel doors etc etc.
AND for anyone who thinks a bunker or somehow that even a storm shelter or safe room is stupid, foolish or a waste of money >>>
Here are a Few advantages to having a Bunker some even call it an Underground house >
"We believe that when designed and built
properly on suitable sites, Post/Shoring/
Polyethylene, or PSP, underground dwellings
are the finest that can be constructed.
They have 23 distinct advantages over conventional
structures. These are:
1. NO FOUNDATION. - except the earth.
2. LESS BUILDING MATERIAL. - using lumber or logs.
3. LESS LABOR.
4. MOST AESTHETICALLY PLEASING.
5. LESS TAX.
6. WARM IN WINTER.
7. COOL IN SUMMER.
8. BETTER VIEW. - especially if built on a hillside.
9. BUILT-IN GREENHOUSE.
10. ECOLOGICALLY SOUND.
11. INCREASED YARD SPACE.
12. FALLOUT SHELTER.
13. CUTS ATMOSPHERIC RADIATION.
14. DEFENSIBLE.
15. CONCEALMENT.
16. CLOSER TO SOURCE OF WATER.
17. RELATIVELY FIREPROOF.
18. PIPES NEVER FREEZE.
19. SUPERIOR FLOORING.
20. CAN BE BUILT BY ANYONE.
21. WEATHERPROOF. - extremely good tornado, blizzard and storm protection...
22. LESS MAINTENANCE.
23. SOUNDPROOF."
The previous quote is from Mike Oehler's "The $50 and Up Underground House Book" page 10
Link to some pics of Mike Oehler's >
http://www.undergroundhousing.com/structures.html