Modern Monticello — Ogopogo
Wall & Roof Systems
Standing Rule — Capping & Skinning
Every build gets a cap, stucco, or skin — no exceptions, no bare finish left exposed. This is structural insurance, not just cosmetic. MM builds intentionally over-engineer, on principle.
“If it ever breaks, I'll have sworn it shouldn't have.” — Zach's dad, Lambert family staple
- Rammed earth tire — moisture barrier always, stucco/plaster cap on any exterior face
- Wood posts (ferrocement, cordwood framing) — MM wood sealant + standoff bracket, never bare in the wall assembly
- Straw bale — clay interior / lime exterior plaster (moisture rule doubles as capping rule)
- Papercrete, hempcrete, cob — finish coat expected as standard practice, not an upgrade option
Wall Systems
Ferrocement Panel
Beats the Cheap Version — Beats vinyl privacy fence, thin garden walls
Best shape: Curved / freeform · Tier: Any / entry
Non-structural by spec
Post-base standoff bracket (no wood-to-concrete contact), galvanized ties, doubled hardware cloth
Verify: post spacing before mesh sag under wet mortar load. See also: Ferrocement + GCCM Cap Roof Shell (Techniques) — this same ferrocement-over-lath method, applied to a roof and capped with a GCCM waterproof membrane instead of left as a bare wall panel.
Cordwood (structural)
Peer Replacement — Timber-frame wall replacement
Best shape: Straight, cabin-scale · Tier: Any
Two mortar bands + insulated cavity, 16 inch min. roof overhang, debarked matched-species logs
Verify: WV-specific snow/wind load spec
Cordwood (hempcrete mortar variant)
Peer Replacement
Best shape: Straight, cabin-scale · Tier: Any
Same as structural cordwood, hempcrete replacing lime mortar
Verify: untested combination, no built examples found
Cob
Peer Replacement
Best shape: Curved / sculptural / hobbit-style · Tier: Any
Good boots (raised foundation) + good hat (wide overhang), breathable lime/earthen plaster
Verified — Cob Research Institute-backed IRC code path exists
Straw Bale — Infill (non-load-bearing)
Peer Replacement — Insulation batt replacement
Best shape: Straight · Tier: Any
Frame carries load, bales are insulation/plaster substrate only
Timber frame + bale infill, clay interior / lime exterior plaster, NO vapor barrier ever
Verified — best WV cold-climate straw bale option
Straw Bale — Nebraska-style (load-bearing)
Peer Replacement
Best shape: Straight · Tier: Warmer / lower-snow climates only
Pre-compression required before plaster, same no-vapor-barrier rule as infill
Verify: WV snow load likely exceeds structural ceiling
Papercrete Brick
Peer Replacement — CMU/brick replacement
Best shape: Straight · Tier: Foreman+ (current MM default)
Existing MM standard build practice
Verified — in active use
Hempcrete
Peer Replacement — Concrete/papercrete replacement, preferred-tier material
Best shape: Straight · Tier: Preferred / permit-path required
Alternative Materials submission (IRC R104.11); WVDA cultivation license required if growing own hurd
Verified legal and material status — permitting process is the lift, not legality
Rammed Earth Tire (Earthship-style)
Peer Replacement — Retaining/berm wall replacement
Best shape: Berm / hillside, earth-sheltered · Tier: Any, labor-intensive
Moisture barrier always (standing MM rule), stucco/plaster cap on any exterior face, batter/step-back per course. Frost heave, now resolved: footing below the local frost line (WV frost depth runs roughly 24–36 inches depending on county/elevation — check the local figure, don't assume one number statewide), rigid exterior insulation on the berm-facing side extending down to the footing so the thermal mass wall itself never freezes, and a real perimeter drain at the footing — water sitting against the wall is what actually drives heave, not cold alone, so drainage matters as much as the insulation.
Frost heave: resolved, see keyRequirement above — standard Earthship-construction practice, well-documented, not actually in dispute. Off-gassing: still genuinely unresolved, not just under-researched by MM — vulcanized rubber is reasonably inert at ambient temperature once fully encapsulated (stucco/earth on every exposed face, no bare tire ever facing interior air), but independent long-term air-quality studies measuring actual VOC off-gassing (benzothiazole and other rubber-curing byproducts are the specific compounds of concern) inside occupied tire-wall structures over decades are thin, and Earthships intentionally heat this exact thermal mass with passive solar gain, which could plausibly accelerate any real off-gassing versus ambient-temperature tire storage. Full encapsulation remains the correct precaution either way; this entry stays unverified until a real study closes the question, not pending more MM research time.
Gabion
Beats the Cheap Version — Beats landscape timber, thin retaining block; peer-replacement for true engineered retaining walls
Best shape: Straight or curved, any · Tier: Any, near-zero material cost with on-site stone
Proven for retaining/screening; unproven as primary structural building wall
No mortar, staggered courses, crosstie bracing every 12in of lift, 2:1 base-to-height ratio for retaining use
Verified for retaining/screening use — structural building-wall use is thin on precedent
Earthbag / Superadobe
Peer Replacement — CMU / poured concrete replacement, especially in seismic zones
Best shape: Dome, curved, or rectilinear · Tier: Any, labor-intensive (1,500-2,500 bags for a small cabin)
30% clay / 70% sand-gravel fill, barbed wire between courses, UV cover/plaster mandatory (capping rule applies directly)
Verified — passed CA seismic code testing, proven in 2015 Nepal earthquake
Wattle and Daub
Niche Fill — Historical interior infill technique, direct ancestor of ferrocement
Best shape: Curved or straight infill · Tier: Interior / unheated structures only
Woven lattice + clay-based daub, lime whitewash finish (pre-industrial version of capping rule)
Verified — historical ancestor of ferrocement, poor thermal performance by design, not a flaw to fix
Aircrete
Niche Fill — Lightweight liftable decorative monolith — nothing commercial fills this niche
Best shape: Decorative, liftable/precast elements (arches, lintels, old-world accent pieces) · Tier: Novelty / niche
Oddity/accent tier only, never structural
Cement + water + detergent foam, no aggregate; compressive strength genuinely undocumented, engineer sign-off required for anything load-bearing
Verify: no reliable compression data exists anywhere — MM could generate its own via documented test pour
Cardboard-Laminate Panel (DIY OSB)
Niche Fill — Free-form custom household shape, no table saw or lumber needed
Best shape: Any shape scissors can cut · Tier: Household / kid-project
Novelty/infill only, not a sheathing or structural substitute
Cross-oriented cardboard layers + wheat paste binder, mandatory watertight skin (rot is the failure mode without it)
Verify: zero compression/load data exists anywhere — lower ceiling than aircrete
Moldable Wood-Pulp Casting (sawdust/cardboard-pulp clay)
Niche Fill — Rosettes, trim, appliqués — skip the Dremel or rough-out a shape before hand-carving
Best shape: Any mold-cast shape · Tier: Household / craft-tier
Trim/detail only, not a wall or roof system
Sawdust or cardboard pulp + binder (PVA, wallpaper paste, wheat or rice paste), press into mold, carve/sand/stain once dry
Verify: interior use only — no exterior weatherproofing data exists
Insulation Fill Materials
Perlite (loose-fill)
Fire: Excellent — improves 8in CMU fire rating from 2hr to 4hr when silicone-treated
Moisture: Water-repellent-treated versions available; not for continuous water exposure
ASTM C549 standard product — buy the masonry-fill version, not the horticultural bag
Verified — established commercial/code product
Sheep's Wool
Fire: Naturally self-extinguishing, no treatment needed
Moisture: Excellent — absorbs and releases moisture without losing R-value, unlike cotton
Free-to-cheap if sourced as raw fleece locally (skirted, non-spinning-grade)
Verified — ancient, proven material; light borate treatment recommended against moths/beetles
Rice Hull Loose-Fill
Fire: Naturally fire-resistant via silica-cellulose structure — resists sustained combustion
Moisture: Excellent — silica coating resists rot, fungus, insects
Not a WV byproduct — principle transfers but source is regional (rice-growing areas); WV equivalent (buckwheat hull, corn cob grit) unresearched
Verify: find true WV-local silica/lignin-rich ag byproduct equivalent
Denim/Cotton Scrap (shop rag shred)
Fire: Cotton chars in place — safe; poly-blend content must stay low, see sort checklist
Moisture: Requires vapor barrier — packs down and stays wet if soaked
Free if diverting your own shop rag stream
Shred pile — yes (Must be clean, dry, mold-free)
Denim, Cotton, Canvas, Linen, Wool, Cotton-dominant poly blends
Shred pile — no
- High-poly-content synthetics (100% polyester, nylon, acrylic fleece, athletic wear) — melt-and-drip is a worse fire failure mode than charring
- Chemically flame-retardant-treated fabric — unpredictable breakdown once shredded/sealed
- Vinyl, pleather, laminated or plastic-backed fabric
- Moldy or heavily soiled items
- Hardware (buttons, zippers, snaps, underwire) — strip before shredding
Borax/boric acid soak-and-dry before bagging for any permanent wall-cavity use
Verify: borate treatment mandatory before permanent wall-cavity use, not optional
Roof Systems
Living / Sod Roof
Best paired wall: Rammed Earth Tire (Earthship-style), Cordwood (structural)
Tier: Any, needs engineering sign-off
Full membrane + root barrier + drainage stack, cold-climate plant selection (sedums, native grasses, moss)
Verify: per-build structural engineering required every time, not generalizable
Bamboo Shingle (Sirap / Pelupuh)
Best paired wall: Ferrocement Panel, Cob
Tier: Feature / accent
Bamboo as rain-screen over real synthetic membrane, installed convex-side-up
Verify: freeze-thaw behavior on clumping bamboo species, untested in WV
Thatch
Best paired wall: Cordwood (structural), Cob
Tier: Feature / test-section only
Fireproof underlayment, chimney spark arrestors, annual inspection
Verify: WV freeze-thaw/wet-season performance untested, no source data found either direction
Wood Shake (treated)
Best paired wall: Papercrete Brick, Hempcrete
Tier: Secondary / accent, insured structures only
Pressure-impregnated fire retardant + fire-resistant underlayment, reapplication needed to hold rating
Verified material performance — confirm current Kanawha County code and insurer position before primary use
Conventional baseline (metal / standing-seam)
Best paired wall: Any wall system
Tier: Primary residence default
Not yet carded
Fire Risk — Stacking Flag
Highest-risk roofs: Thatch, Wood Shake (treated)
Avoid pairing either with cordwood or straw bale walls without an explicit defensible-space/fire-mitigation note in the build book.
Quick Pick Guide
Freeform / curved build
Ferrocement or cob walls + bamboo shingle or living roof
Straight structural, current default
Papercrete brick + wood shake or conventional
Straight structural, insulation upgrade
Hempcrete + wood shake or conventional
Cabin-scale, log aesthetic, heavy thermal mass
Cordwood + thatch or living roof
Fast, low-skill, non-structural enclosure
Ferrocement panel, roof-independent (fencing/pen/garden context)
Heavy insulation on framed structure
Straw bale infill, roof-independent (frame dictates pitch)
Earth-sheltered, bermed into a hillside
Rammed earth tire + living roof
Retaining wall, terracing, seating, raised bed
Gabion (near-zero cost if you've got field stone)
Load-bearing dome, seismic-resilient, low material cost
Earthbag / Superadobe
Interior partition or unheated outbuilding infill
Wattle and daub
Decorative arch, lintel, or old-world precast piece you need light enough to lift into place by hand
Aircrete — novelty/accent only, never load-bearing
Custom-shaped household piece, want the look/feel of wood, no table saw or band saw needed, don't want to pay for lumber
Cardboard-laminate panel — scissors, flour, and a stove is the whole tool list
Rosette, trim, appliqué, or rough-out shape before hand-carving, don't want to break out the Dremel for a whole piece
Moldable wood-pulp casting (sawdust or cardboard pulp + binder)
Open Verification Items
- Cordwood / Nebraska straw bale — WV-specific snow and wind load numbers
- Ferrocement — max post spacing before mesh sag under wet mortar load
- Hempcrete-as-cordwood-mortar — needs a physical test panel, currently zero built precedent found
- Bamboo shingle — freeze/thaw behavior on Zach's specific clumping species over a full WV winter
- Thatch — WV climate performance, no source data found either direction
- Living roof — structural engineer sign-off required per-build, not generalizable
- Wood shake — confirm current Kanawha County code and insurer position before specifying on any primary structure
- Gabion as primary load-bearing building wall (not retaining) — limited built precedent, mostly academic interest so far
- Aircrete — no reliable compression strength data exists anywhere; MM's own test-pour-and-document could fill a real gap here
- Cardboard-laminate panel — zero compression/load data exists anywhere; treat as household/novelty only until (if ever) tested
- Rice hull WV-local equivalent — identify true local silica/lignin-rich ag byproduct
- Denim/cotton scrap — confirm borate treatment protocol before any permanent wall-cavity use