YOUR HOUSE IS A COFFIN. HERE'S THE FIX. · AM-COR FERROCEMENT KITS
Build YourBug-In Fortress.
You've been watching the news for 3 years. You've done nothing. The grid is tight. The heat is coming. Backyard bunkers, SHTF-ready homes, and exostructure armor — from $89/sq. ft. Stop waiting. Start building.
THE WINDOW IS CLOSING
Stop Pretending It Won't Happen
NOAA. FEMA. NERC. They don't agree on much. They agree on this: 2026 is different. The people who build now sleep at night. Everyone else is hoping for the best. Hope is not a survival strategy.
PICK YOUR THREAT
Every SHTF Scenario Has a Right Answer.
Grid-down is not nuclear. Wildfire is not hurricane. Each threat has a specific, buildable answer. Find yours — then use the Planner to price it in 60 seconds.
Grid Goes Down
The grid fails. 105°F outside. Your wood-frame house becomes an oven in 4 hours. People die. A ferrocement shell stays 20–30°F cooler with zero power. Stop depending on a system that NERC says has no buffer left.
Run the Planner. Pick your size. Get your number in 60 seconds.
Super Heatwave
Sustained 110°F+ turns standard homes into kill zones. Ferrocement thermal mass buys 24–48 hours with zero power. Add a subterranean room: 55°F refuge while everyone else is cooking alive.
This is solvable. Use the Planner below. Takes 2 minutes.
Nuclear Fallout
10–12" ferrocement walls. Sealed ventilation. Underground bunker. That's your 14-day window. The 7-10 rule: fallout drops to 1/1000th of peak after two weeks. Two weeks. You just need to survive two weeks.
A Baby Bunker kit ships in 6–8 weeks. Order now — that math matters.
Bug-In Fortress
Roads gridlock in 6 hours. Your bug-out plan fails. The smart move: make your home the place everyone else wants to run TO. Non-combustible. 200+ MPH rated. Ballistic. Thermally independent.
Price the exostructure armor for your home right now. It's faster than you think.
Hurricanes & Floods
Category 5 hits. Your neighbors' roofs are airborne. Your ferrocement shell is still standing. Zero combustible surfaces. 200+ MPH rated. You're not evacuating. You're watching from inside with the lights on.
Armor retrofit ships in 4–6 weeks. Storm season starts in June.
Wildfire
An ember hits your roof. A wood house is gone in 12 minutes. It happened in Paradise. In Maui. It's happening every year in new places. Ferrocement exterior: embers die on contact. Retrofit without demolition.
Get the armor quote. Before your zip code becomes the next headline.
How Much Does a Prepper Bunker or Hardened Home Cost?
Priced by square foot. No mystery, no sales call required. Pick your product, enter your size, get your number. Then decide. Simple.
Ferrocement Home Kit
1,500 sq ft ≈ $133,500
⏱ Ships in 8–12 weeks
Baby Bunker / Shelter
400 sq ft ≈ $72,000
⏱ Ships in 6–8 weeks
Exostructure Armor Retrofit
2,000 sq ft ≈ $136,000
⏱ Ships in 4–6 weeks
Your Shelter. Your Number. Right Now.
What are you building?
AM-COR · SINCE 1973
Built During the Last Crisis.
Still Here for This One.
The 1973 oil embargo didn't just strand cars in line — it exposed how brittle American infrastructure was. Am-Cor was founded in that moment, building ferrocement structures when most of the industry hadn't heard of the material yet.
Fifty years later, the company is still family-run, still U.S.-based. The founder is what the industry calls a village elder — the person peers call when they've hit a problem no one has seen in three decades. Every FerroKit shell is designed by Macdonald Architects and built by Am-Cor. No distributors. No middlemen. The people who ship your kit are the people who built the methodology.
Your Walls Are
Made of Sticks.
Most American homes are wood-frame boxes. Kindling. In a grid-down heatwave, they kill people. In a wildfire, they're gone in 12 minutes. FerroKits replaces that with monolithic ferrocement — the same material used in disaster-proof construction worldwide.
Not a bunker disguised as a home. A home that's finally built for the real world. Pre-engineered kits deploy rapidly — high-strength shells against fire, kinetic impact, extreme heat, and grid instability — at a fraction of traditional construction cost.
TIMING IS EVERYTHING
When Should I Start Building?
Immediately.
Prices are only going up. War in Europe, fuel supply shocks, and global supply chain disruption have pushed construction material costs up 40%+ since 2022. They are not coming back down. The kit you configure today is cheaper than the one you configure next month.
Lead times are 4–12 weeks. Build time is 2–14 weeks. You are 6–26 weeks awayfrom having a protected structure. The threat calendar doesn't wait for your decision. Hurricane season starts June 1. Summer heat forecasts are already published. The grid operators have already filed their margin reports.
Prices Are Rising
Material costs up 40%+ since 2022. War, fuel, supply chain disruption. No reversal in sight.
Hurricane Season Starts June 1
A 10–17 week build timeline means orders placed today can be complete before peak season.
Grid Margins Are Tight
NERC flagged low reserve margins for the 2026 summer. Peak heat demand = cascading failure risk.
Production Slots Are Limited
Am-Cor is a precision manufacturer, not a factory. 2026 slots are filling. Early orders get priority.
SCENARIO SAFETY CHECK
Will I Be Safe In...?
Every threat has a specific, buildable answer. Here's what ferrocement actually does — and doesn't — protect against.
...a nuclear event?
Yes — with the right shelter.
10–12" ferrocement walls + earth overburden + sealed HEPA/carbon ventilation. Follow the 7-10 rule: 14 days clears fallout to survivable levels. Baby Bunker or Burrow Series required.
Requires underground shelter...a Category 5 hurricane?
Yes — in any Am-Cor structure.
Ferrocement handles 200+ MPH. No combustible exterior. No roof peel. Standard home kits and exostructure armor both qualify. The structure itself is the safety.
Any Am-Cor product...a wildfire?
Yes — ferrocement won't ignite.
Embers die on contact with ferrocement. No combustible siding to catch. Exostructure armor retrofits your existing home in 7–12 weeks. This is the single fastest win for Western U.S. homeowners.
Any Am-Cor product...a chemical or biological event?
Yes — with CBRN-ready ventilation.
Positive-pressure HEPA + activated carbon filtration keeps aerosolized chemical and biological agents out. The ferrocement shell provides the sealed envelope. Ventilation system is a required add-on.
Requires air filtration add-on...civil unrest or grid collapse?
Yes — ferrocement is ballistic.
Dense ferrocement stops most small-arms fire. Non-combustible exterior. Thermal mass keeps interior liveable without power. Your home becomes a hard target others want to avoid, not attack.
Any Am-Cor product...a super heatwave with grid-down?
Yes — thermal mass is your A/C.
Ferrocement has 6× the thermal mass of wood framing. Interior temperatures lag 4–8 hours behind outdoor temps. At 108°F outdoor, ferrocement home stays 80–85°F inside — without any power. Passive stack ventilation included.
Home kit or armor retrofitThree Products. One Decision. Make It.
2026 summer production slots are filling. If you're serious about being ready before hurricane season, the window to order is now.
Standard Custom Home Kits
Not a bunker with a roof. A real home — monolithic ferrocement shell, pre-engineered framework — that happens to survive what kills everyone else's house. Grid-down. Wildfire. Category 5. Built in.
⏱ Kit ships 8–12 weeks · Installation 4–6 weeks
Configure Your Shell →Baby Bunker / Mini Shelter
Subterranean or semi-submerged vault for 2–8 people. Non-combustible. Radiation-attenuating. Discreet. Add one to an existing property in weeks. The difference between a 14-day survival window and hoping for the best.
⏱ Kit ships 6–8 weeks · Install in ~2 weeks
Explore the Bunker Series →Exostructure Wall & Roof Armor
Already own a home? Don't demolish it. Armor it. Ferrocement panels applied to your existing structure — no foundation changes, no rebuild. Ballistic. Fire-rated. Storm-hardened. Fastest path from vulnerable to protected.
⏱ Kit ships 4–6 weeks · Retrofit 1–2 weeks
Armor Your Home →YOU HAVE QUESTIONS
We Have Answers. Build First, Regret Nothing.
How much does a backyard bunker cost to build?
A ferrocement backyard bunker starts at $180/sq ft with Am-Cor kits. A standard 400 sq ft baby bunker runs approximately $72,000 — fraction of what custom poured concrete or steel runs. Underground installation and ventilation are additional. Use the Planner above to get your specific number in under 2 minutes.
What's the best bunker material for nuclear fallout?
Ferrocement at 10–12" wall thickness provides meaningful gamma shielding. Combined with sealed ventilation and 14-day supplies, this follows the 7-10 rule: after two weeks, fallout drops to 1/1000th of peak. Ferrocement outperforms standard concrete at the same weight. The Baby Bunker kit is purpose-built for this. It ships in 6–8 weeks. Order before you need it.
Is it better to bug in or bug out during a SHTF event?
For most preppers, bugging in wins. Roads gridlock in 6 hours. Your home has your water, your stockpile, your weapons. The one variable: can your home take the hit? A ferrocement shell or exostructure armor turns it into a hard target — genuinely safer than anywhere you could drive to. This is solvable. Run your threat through the Planner.
How much does it cost to wildfire-proof or hurricane-proof an existing house?
Exostructure armor starts at $68/sq ft — no demolition. For a 2,000 sq ft home, roughly $136,000 to get 200+ MPH wind resistance, 2-hour fire rating, ballistic hardening. Compare that to a total rebuild after a loss. Kits ship in 4–6 weeks. Hurricane season starts June 1. The math writes itself.
INTELLIGENCE BRIEFING
Read This Before It's Too Late
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