Concrete Is A Bunker’s Gold
As a result of the governmental promotion of individually constructed bunkers, there’s tons of information available for those ready to accept the challenge. The most important thing you need is a solid roof that’s able to sustain the harshest conditions.
Another trick is to use as much concrete as possible. The material is not only cheap, highly common, and easy to apply, but it is also remarkably resistant. The tension of the Cold War is long gone, but the future of the American bunker business is looking brighter than ever.