Five non-negotiable principles that every material, every assembly, and every system in a Domus-grade home must satisfy — without exception.
The Salus Standard is the benchmark against which every material that enters a Domus-grade home is evaluated. It is not a certification program, a marketing label, or a points-based green building system. It is a set of five non-negotiable performance requirements derived from a single premise: your home should protect your health, not compromise it.
Modern construction has normalized materials that fail basic health criteria — formaldehyde-off-gassing engineered wood, moisture-trapping spray foam, phthalate-releasing vinyl, chemically-treated lumber. These materials dominate not because they are best for the people living inside the home, but because they are cheapest and fastest for the people building it.
The Salus Standard rejects that trade-off. A material either passes all five principles or it does not belong in a Domus-grade home. There is no partial credit, no "lower than average chemical load," no "practically safe." The standard is binary because your family's health deserves a binary answer.
"Every material that enters a Domus Salus home must meet five criteria: naturally fire-resistant, inherently mold-resistant, pest-proof without toxins, neutral or positive indoor air quality impact, and capable of lasting generations without chemical life support."
"We do not accept materials that require chemical Band-Aids to perform. We do not accept materials that poison the air to save the builder money. We do not accept the frontier mentality that confuses code compliance with optimal health."
Expand each principle to see the full evaluation criteria, which materials fail, and what the Domus-grade alternatives are.
Standard wood-frame construction is inherently combustible. The industry's solution — chemical fire retardants — trades fire risk for continuous chemical exposure. Halogenated flame retardants used in insulation, treated lumber, and engineered wood products are documented endocrine disruptors and probable carcinogens. The Domus Standard requires fire resistance that comes from what the material is made of, not what has been injected into it.
Moisture intrusion is not a failure scenario in construction — it is a certainty over any building's lifespan. The question is not whether moisture will find its way into your wall assembly, but whether your wall assembly feeds mold when it does. OSB, cellulose, and standard fiberglass batts are organic and nutrient-rich — ideal mold substrates. Standard gypsum drywall's vulnerability is its paper facing: gypsum itself is an inorganic mineral, but the paper facing that covers both sides is organic and is what mold colonizes. Inorganic materials with no organic facing or binders have nothing for mold to consume.
Pressure-treated lumber uses copper compounds and biocides injected under pressure to resist rot and insects. These chemicals leach continuously — into soil, into air, into crawl spaces where vapors migrate upward into living spaces. The alternative is not chemical resistance, but structural design that uses materials pests cannot digest: metal, masonry, inorganic composites, and naturally rot-resistant species where appropriate.
The EPA documents indoor air at 2–5× worse than outdoor air in American homes. The primary driver is continuous off-gassing from building materials: formaldehyde from engineered wood adhesives, isocyanates from spray foam, phthalates from vinyl, chemical preservatives from treated lumber. In energy-efficient sealed homes, these compounds accumulate without ventilation to dilute them. Principle IV requires zero ongoing VOC contribution — not "low VOC," not "compliant VOC." Zero.
Frontier-grade construction is designed for 30-year lifespans — aligned with mortgage terms, not civilizational standards. Vinyl siding, asphalt shingles, OSB sheathing, and engineered lumber all carry expected replacement cycles under 30 years in real-world conditions. Domus Principle V requires materials capable of 100+ year service without replacement. Not as an aspiration — as a minimum qualification. The Romans built structures that still stand 2,000 years later. We're building homes that need major renovations before the owner's children finish school.
Four verdicts. No ambiguous middle ground. A material either meets the Domus Principles — or it doesn't.
Every material evaluated by Domus Salus receives a Salus Verdict based on its performance across all five Domus Principles. The verdict is not influenced by energy performance, installed cost, or code compliance. Those are the industry's criteria. The Salus Verdict measures only what matters to the occupant: health, safety, and permanence.
A material that passes four principles but fails Principle IV — indoor air quality — does not receive a conditional pass. It is Failed. A single VOC-emitting material in a sealed home is a continuous health exposure, and that cannot be offset by strong performance elsewhere. Each principle must stand on its own.
Numeric scores for each material will be published through the Material Monday series as formal evaluations are completed under the published Salus Score Methodology. The verdicts shown here reflect the qualitative outcome of that framework.
Fails one or more Domus Principles outright. Active health hazard in occupied conditions. Not permitted in any Salus-certified application regardless of compensating design details.
Partially meets one or more principles. Permitted only in defined applications with specific compensating design requirements — proper moisture management, additional fire detailing, or equivalent. Conditions are non-negotiable.
Meets all five Domus Principles to the Salus Standard. Approved for use in Salus-certified construction without qualification. Minor performance gaps on non-critical sub-criteria may exist — no principle fails outright.
Exceeds all five Domus Principles. No chemical additives, no organic mold substrate, no combustibility concerns, no VOC emissions. First-choice material for Salus-certified construction. The gold standard for each category.
Safety data sheets, third-party test results, regulatory classifications, and peer-reviewed literature are gathered for the material.
Each principle is evaluated independently. A single outright failure produces a Failed verdict — no averaging across principles.
VOC emission data (CDPH 01350, GREENGUARD, or equivalent) reviewed for Principle IV. Formaldehyde, isocyanates, and phthalates trigger automatic failure.
If Conditional, the specific design requirements that must accompany use are stated. These are published alongside the verdict and are non-negotiable.
Final verdict, principle-by-principle breakdown, primary data sources, and any conditions published to the material database.
The same home. The same energy code. Two completely different material philosophies — and two completely different health outcomes.
The Salus Standard is not a certification that requires a builder's license or an architect's stamp. It is a set of questions any homeowner or homebuyer can ask — and any builder who cannot answer them does not know enough about what they are building.
Knowledge is the first form of demand. When you know what OSB is, what formaldehyde means for your indoor air, what an ERV does and why its absence matters in a sealed home — you become the buyer that builders cannot ignore.
The market for Domus-grade construction will be built from the bottom up, by buyers who refuse to accept frontier-grade materials dressed in granite countertops. The Salus Standard gives you the vocabulary and the framework to refuse.
Get the Domus Salus Material Guide — a complete reference to Salus-certified materials, Domus-grade alternatives to standard products, and the questions to ask before signing any construction contract.
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