Are healthy-home materials standard in an SV Built home?

Not necessarily — they're more a set of options we guide you through. We understand these materials do come at an increased cost, so we have the discussion first to learn each client's priorities. We set out the healthier choice at each line item, explain the trade-offs and the cost, and you decide how far to take it. Our standard is the high-performance fabric — airtightness, insulation, glazing and ventilation; the healthy-material choices sit on top of that, by choice.

Do healthy-home materials cost more?

Some do. Zero-VOC paint runs about 5–10% more than conventional; the three highest-value moves together add roughly 2–3% of the build; and wool, cellulose or hemp insulations add meaningful cost. We're upfront about it — and we treat health as the larger cost, the one that compounds quietly over the years you live in the home.

Which healthy-material choices give the most benefit?

Three: zero-VOC paint throughout, E0 or Super E0 boards for all cabinetry, and water-based adhesives with low-VOC sealants for anything installed indoors. Together they are typically 2–3% of the build, for an order-of-magnitude improvement in indoor air measured at handover.

Do healthy materials clean the air on their own?

They are one of three parts. Healthy materials reduce what off-gasses in the first place; an airtight envelope stops uncontrolled air movement; and heat-recovery ventilation moves fresh, filtered air through the home to keep concentrations low. Any one alone is a partial solution.

← Journal · Materials · 5 min read

A short guide to healthy-home materials in an Australian climate.

A practical guide to the healthy-home material options you can choose in an Australian climate — what they are, what they cost, and why we think they're worth it.

SV Built · 8 March 2026

Indoor air is, on average, several times more polluted than the air outside.

The sources are mundane: VOCs off-gassing from paints and sealants, formaldehyde from cabinetry and engineered timber, plasticisers from carpets and vinyl flooring, solvents from adhesives. Most of these are measurable for months after handover, some for years.

None of them are necessary. A healthier alternative exists at nearly every line item — and material choice is just one of the seven pillars of a healthy home. Every one is a choice, not our standard build. We don’t fold them all into every home by default; we set out the options, explain the trade-offs, and let each client decide how far to take it.

Some of these choices do cost more than the conventional default, and we’re upfront about that. But we treat health as the larger cost — the quiet one that compounds over the years you live in the home — and against that, the premium on a healthier material is usually money well spent.

Paints and stains

Low-VOC and zero-VOC paints are now widely available from every major Australian supplier. Choosing zero-VOC interior paint is one of the easiest healthy swaps a client can make — the cost uplift is 5–10% versus conventional, and the finish is indistinguishable. It’s the option we point to first for anyone asking where to start.

For timber stains and clear finishes, hard-wax oils and water-based polyurethanes replace solvent-based finishes entirely. Cure time is slightly longer. Smell during application is dramatically lower. Performance is equal.

Cabinetry and engineered timber

Formaldehyde from MDF, particleboard and some plywoods is the single largest indoor-air contributor in a typical new home. The workaround is E0 or Super E0 rated boards — both widely available from Australian manufacturers, both more expensive per sheet, both invisible once installed.

For custom cabinetry, E0 or Super E0 substrates with water-based finishing lacquers are the healthier option. The kitchen is where it counts most — cabinetry volume is high and the room sees the most use — so if a client chooses healthier boards anywhere, we’d point them here first.

Adhesives and sealants

Construction adhesives and sealants are a quiet source of long-term off-gassing. Water-based and low-VOC adhesives are available for panel bonding and most interior applications, and natural-latex-based sealants can stand in for silicones in many places — all of them options a client can take up for the interior.

Exterior waterproofing and structural sealants are harder to substitute — those remain conventional — but interior adhesives are almost always swappable.

Flooring

Solid timber, engineered timber with low-formaldehyde cores, natural linoleum, cork, wool carpet and stone are the healthier flooring options. Vinyl and standard carpet underlays are the ones we’d steer a health-conscious client away from.

A timber floor finished with hard-wax oil smells like timber for a week. A vinyl floor smells like vinyl for a year.

Insulation

Fibreglass and polystyrene-based insulations are the most common in Australian homes. Mineral wool (glasswool / rockwool) is broadly benign once installed. Spray foam (PU) varies widely and depends on installation quality.

For clients sensitive to synthetic off-gassing, wool, cellulose (like wood fibre) and hemp-based insulations are an option, though they add meaningful cost — we’ll specify them on request.

Ventilation is the amplifier

Choosing healthy materials matters most when the home is airtight — because an airtight home isn’t diluting whatever is off-gassing. Heat-recovery ventilation then becomes load-bearing: it’s what moves the fresh air through the home to keep concentrations low.

Healthy materials + airtight envelope + HRV is the combination that delivers measurably cleaner indoor air. Any one of the three alone is a partial solution.

The short list

If you only want three moves:

Zero-VOC paint everywhere.
E0 or Super E0 boards for every piece of cabinetry.
Water-based adhesives and low-VOC sealants for everything installed indoors.

Those three choices, added up, cost perhaps 2–3% of the build. The air-quality delta, measured at handover, is typically an order of magnitude — and the people living in the home notice it without being told to.

None of it is compulsory. It’s a menu, not a mandate — our job is to set out the options and their costs honestly, then help you choose the ones worth it for the custom home we build for you and your budget.