What people ask.
What is a Stabilized Compressed Earth Block?
A masonry unit made by compressing soil, water, and a small amount of stabilizer at high pressure. Engineered dirt — not traditional adobe.
Will it wash away in the rain?
Not if it’s properly stabilized and detailed. Good stabilization, roof overhangs, and proper base detailing solve most moisture concerns.
How strong are CEBs compared to concrete block?
Every block we ship tests north of 1,000 psi. Well above typical masonry code.
How much versus stick-and-brick?
Wrong first-cost question, and we will still publish the numbers. Alpha Haus will show the full build cost of a CEB house next to stick-and-brick, not just the block. Thermal, energy, and health are the bill that follows.
Do CEBs meet building code?
Yes — IRC/IBC 104.11 alternative materials. Design guide ASTM E2392. Working earthen code: New Mexico 14.7.4 NMAC, when properly engineered.
How do I check inventory?
Ask on the Contact page. Availability is confirmed by email before any deposit — nothing is claimed to be on hand.
Do you sell to distributors and yards?
Yes. If you already move CMU, you can move earth block. Terms by email — start on the Contact page.
Can the outside look like a normal house?
Yes. Plaster, stucco, or board-and-batten. Those skins cost extra, and they do not make the wall perform better. The block already does that job. Leave it honest or cover it. Your call.
Can you paint it?
Yes, with a breathable mineral or silicate paint. Do not wrap it in a plastic film coating. Trap moisture in a wall and you create the problem you were trying to avoid.
What is the R-Value of compressed earth blocks?
R-value measures resistance to heat flow when temperatures are held still. Dense compressed earth, like other solid masonry, typically tests about R-0.25 to R-0.4 per inch, so a CEB wall’s lab R is that rate times thickness. That number is real and incomplete: it does not count thermal mass. The wall stores heat and releases it slowly, which delays and damps the outdoor peak. Energy codes already give mass walls their own R-value minimums, separate from wood frame. We do not publish a made-up “effective R.”
How much maintenance do CEB walls need?
Very little. Most issues come from poor detailing at the foundation or roofline, not the material itself.
Aren’t these basically just mud huts?
Only if you’ve never seen a properly built modern CEB structure. These are engineered, code-compliant buildings with real performance data behind them.
How fast can you build with CEBs?
Production speed is competitive with conventional masonry. Time savings often come from reduced finishes and simpler detailing.
What about pests like termites?
If a bug gets through your CEB wall, there are likely much more pressing issues at hand.
Why isn’t everyone already building with CEBs?
Habit and familiarity. As material costs, labor issues, and performance demands increase, more people are taking a serious look.
How do I get a delivered price?
Punch qty and zip on Contact. Email the takeoff. We quote materials and freight. 50% holds the pallets.
Can we leave the block exposed inside?
Yes, and most owners do. Brush it down, add a breathable sealer if you want less dust, and the wall is finished. No drywall, no tape, no float.
Can the interior be plastered?
Yes. Earthen or lime plaster goes straight onto the block, no lath. Skip it and the block is already your finish.
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