ExSpar Inc. was founded by two U.S. military veterans to design and build underground bunkers and saferooms that provide the best protection possible in the event of a natural or manmade disaster. Tapping into extensive experience in overseas combat and law enforcement as well as welding and fabrication, our team goes beyond designing and building your bunker, providing detailed guidance on set up, stocking, and use to help ensure your family’s survival.
Today, ExSpar builds a variety of structures to include Modular & ICF Storm-Safe homes, ICF Concrete Bunkers and Square Structural Steel Bunkers.
We are proud to be a veteran owned & operated company. Don't trust your survival and security to people with no real-world experience and training in emergency disasters. Thats what stands us apart.
USA Bunker Company has teamed up with Mission 144, a nonprofit whose mission is to provide lifesaving training to everyday citizens and community organizations. These guys have a fundraiser going and the main prize is a 10x20 custom underground bunker built by us! Check out their website to get more info and enter for your chance to win a bunker or one of the m any other prizes and support their cause. Mission-144.org
When making your decision on steel or ICF concrete, here are some major differences between the two. We build both style bunkers because either way you go, you are going to get exceptional protection needed to keep you safe. If we won't use it, we won't build it.
Our Storm-Safe Modular Homes are built to look and feel just like any home on the market. The difference? These homes are capable of withstanding Tornados, Hurricanes, Fires, and Crime. Learn more about our Storm-Safe Modular Homes by clicking button below.
Our company has the ability to help design an entire home with bunker that's completely fortified and outfitted with special security features to included fences, motes, and similar features. These homes can withstand severe conditions, storms, and radiation all while having an attached underground bunker. We can make these fully off grids capable as well
Let us help you get set up with off grid, backup power systems to help during power outages, off grid properties, or subsidize power usage while on the grid. We offer solutions like Solar, Batteries, and generators.
These Steel Structural Steel Bunkers are engineered to nearly double the federal standards require for an occupied underground shelter. Our Square Steel bunkers are completely finished on inside, with underfloor storage and insulated, no painted steel walls. Learn more about our Square Structural Steel Bunkers by clicking button below.
ICF Concrete Bunkers are strong and affordable! These bunkers have two layers of insulation, thick concrete walls. ceilings, and rebar. The biggest advantage with the ICF Bunkers is that you can create more spacious floor plans than any steel bunker can provide. These bunkers beat everything we make on cost and time. Learn more about our ICF Concrete Bunkers by clicking button below.
Building your own bunker? We can help. We supply standard and custom-made parts to fit your bunker project. Whether it's a staircase, steel doors, hatches, air filters, scrubbers, or steel air delivery pipes, we can meet your needs. We can supply you with our expertise to ensure your bunker is set up the right way, with the right parts. Contact us for any parts you need by clicking the button below.
We use only the best CBRN Air filters and scrubbers available. Our bunkers come standard with the Swiss ANDAIR VA Airsystems. We also carry and supply bunkers as an optional upgrade with air scrubbers to keep you breathing when you have no outside air coming in. Learn more about our CBRN Air Systems by clicking button below.
Let ExSpar secure your current home. We offer packages that allow your home to be more secure and have off grid back up power capability when all power is lost. Or services included decorative security doors, security window film, security walls/fence, backup generators, home batteries, and solar to name a few. Contact us for your secure home needs.
Unlike most other builders who use parts made for other applications and retro fit them to a bunker, we design and make specialty parts specifically for bunkers. You can't just go to your local hardware store and shop the emergency bunker section, so you are left with two choices; either find what's available and make it fit, but not function as it should, or design it to fit and function, then build it! Thats exactly what we do. From our hatches to our air pipes, we deigned them to work specifically with bunkers for functionality and safety.
Our steel hatches are created will fail safe in mind. We do not use gas shocks that tend to fail over time and exposure to heat. We designed out hatches with internal hinge box and spring that won't fail you when you need it. Our locks are both keyed and combination, non-electrical, all mechanical function. If you forget to bring your key during an emergency, no worries, just punch in your code and you're in. We have no lock loops where someone can lock you in your own bunker like other builders' hatches.
Your bunker door is a vital part of your safety and security. This is why we don't use marine style ship doors. These doors are designed for ships, not bunkers. They also open outward, not inward, which is a safety issue on its own. Our doors are airtight. Are they watertight? yes, but that's not the point or it's not our selling point like others. These bunkers are not submarines and do not require watertight doors. If your bunker floods to the point you need watertight doors, well, you have bigger problems to worry about because your air pipes are not watertight...
the escape tunnel is a great item to have in any bunker in the event your main entrance is compromised. Why is ours better? Well, ours is safe, hidden, and reusable. Don't fall for the gimmicky sand trap door, which are dangerous and cannot be closed once used. Do you really want hundreds of pounds of contaminated sand filling into your bunker, only to have to punch through hundreds of pounds of dirt falling onto of you as you try to escape? no, you don't. These are dangerous sales gimmicks that look and sound cool, but by no means are they practical or safe.
These other builders only half finish their interiors to save time and money. They just slap paint over the steel walls, which will sweat during use, and they are cold to the touch. With the amount of money you are spending on a bunker, you shouldn't have painted steel walls.
All of our square steel bunkers have actual finished interiors to include the walls all around. They are insulated between the steel and the interior wall to help control temperatures and feel like a home. This is not an upgrade, these interiors are standard in our bunkers.
Please contact us for more info
Average price for a fully equipped bunker ranges from $300 per square foot and up for full NBC/Blast protection.
Yes, we have partnerships with the companies providing every aspect of our bunker business, including fabrication, system design, and installation. Our installation team is comprised of highly experienced, full-time workers who provide expert installation and a lifetime warranty on your bunker.
Yes, we can ship your bunker parts and systems anywhere in the world for your private installation. Our experts will gladly provide guidance and answer questions for your installer.
Our average shelter is 4' ground cover, but our round blast shelters can exceed 40' if desired. However, to get the maximum protection from fall out, 4' is needed, but the get maximum for blast on our round shelters, ground cover needs to match the diameter. A 10' diameter shelter would need 10' ground cover.
Contact us today to get your bunker designed and built by our highly experienced crew. Privacy is very important to us, just as it is to you!
We plan and design our bunkers according to guidelines specified by TACDA Academy Civil Defense Basics. See below:
Underground fallout shelters provide much better protection than basement shelters. Four feet of soil overhead will provide a PF greater than 1000. Good underground fallout shelter entrances should be between 30 and 48 inches in diameter and should have a total length of 22 feet or more. The best attenuation is reached if each leg of the L shaped entrance is 11 feet in length or greater.
Blast shelters should be built with arched ceilings. Flat-topped shelters will not carry the dirt load at those depths, and could fail catastrophically under the additional load from large over-pressures. Shelters in areas near heavy blast targets should be buried at twice their diameter. This depth of cover provides an ‘earth arching’ effect. The full earth arching effect will provide the shelter with approximately 200 psi of overpressure protection. A 10-ft. diameter shelter should be placed into a 20-ft. deep hole. A 9-ft. diameter shelter should be placed into an 18 ft. deep hole. This level of protection provides survivability at 1/2 mile from ground zero of a one-megaton yield ground burst.
The concept of building shelters from corrugated steel tanks was conceived by scientists and engineers at Oak Ridge National Laboratory (ORNL), and actually tested under blast conditions to 200 psi.
This type blast shelter would also provide protection from the ‘initial radiation’ which otherwise is lethal within 1 1/2 mile range of the detonation. Shielding, however, must be placed into the horizontal runs of the entrances to capture the neutrons from the initial radiation. The overhead shielding for initial radiation requires 8 ft. of cover.
Outside of the 1-mile radius of the blast, initial radiation is not an issue. Residual radiation (fallout) is easily attenuated with as little as 4 ft. of dirt cover overhead.
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