Glasswool Warehouse Insulation Brisbane — Knauf Earthwool Specialists
Knauf Earthwool glasswool is Insulation Guru Brisbane’s primary install material for warehouse
offices, conditioned zones, Class 5 office-attached spaces and Class 9b assembly buildings across the
Brisbane industrial corridors. Manufactured by
Knauf Insulation Australia —
Australia’s leading glasswool manufacturer — Earthwool combines a formaldehyde-free bio-based binder, high
recycled glass content, and AS/NZS 4859.1 certified R-values from R1.5 to R6.0. We specify
Earthwool above lined ceilings, in framed cavity walls and in conditioned envelopes from Eagle Farm and the
Port of Brisbane through to Wacol, Acacia Ridge and the Yatala M1 belt.
Or call our commercial team: 0494 157 102
Why Knauf Earthwool Is Insulation Guru Brisbane’s Primary Glasswool
Glasswool dominates the Australian commercial bulk-insulation market for sound reasons — high R-value per dollar,
proven AS/NZS 4859.1 certification, broad availability through national supply chains, decades of in-service
track record. Within the glasswool category, Knauf Earthwool is the product Insulation Guru Brisbane defaults
to on warehouse projects with lined ceilings, framed cavity walls and conditioned envelopes. The reasons are
manufacturing chemistry, environmental credentials, and on-site handling.
Bio-Based Binder, No Added Formaldehyde
Traditional glasswool insulation has historically used phenol-formaldehyde resins to bind glass fibres. Knauf
Insulation introduced ECOSE Technology — a bio-based binder derived from rapidly renewable plant materials —
across the Earthwool range. The binder contains no added phenol, formaldehyde or acrylics,
meaning lower indoor-air-quality impact in finished spaces and substantially reduced embodied carbon over
the manufacturing lifecycle. For Brisbane facility managers specifying insulation for offices, breakrooms
and amenity blocks, the formaldehyde-free claim is increasingly a procurement requirement, not a nice-to-have.
High Recycled Glass Content
Earthwool is manufactured with a high proportion of recycled glass cullet — diverting container and flat glass
from landfill and reducing virgin silica demand. The product carries environmental certifications recognised
under
Insulation Council of Australia and New Zealand (ICANZ)
member declarations and is suitable for Green Star and NABERS-rated commercial projects across South East Queensland.
Soft Handling, Dust-Control On Site
The ECOSE binder produces a noticeably softer, less itchy glasswool than traditional phenol-bound product. Earthwool
batts cut cleaner, generate less airborne dust during install, and are easier on installer hands and arms during
a multi-day commercial job. For warehouse retrofits where Insulation Guru Brisbane is working alongside operational
tenants — fork-lifts running, stock being picked, office staff present — the dust-control characteristic is a
meaningful site-coordination benefit.
AS/NZS 4859.1 Certification + ICANZ Membership
Every Earthwool R-value (R1.5, R2.0, R2.5, R3.0, R3.5, R4.0, R4.5, R5.0, R6.0) carries
AS/NZS 4859.1 certification — the
Australian/New Zealand standard for thermal insulation materials, recognised by the
Australian Building Codes Board as the
compliance pathway for bulk insulation under NCC Section J. Knauf Insulation Australia is also a member of
ICANZ, the industry body that polices product quality and verified R-value claims across the bulk-insulation
sector. The combination of AS/NZS 4859.1 certification and ICANZ membership is the documentation baseline we
hand certifiers on every project.
with a lined ceiling above, framed cavity walls, or a conditioned envelope. We pair Earthwool with CSR Bradford
Anticon for the bulk warehouse roof and with Higgins polyester for documented allergy-sensitive sites.
Knauf Earthwool R-Value Selection — R1.5 Through R6.0
Earthwool is supplied across nine standard batt R-values to match Section J targets, JV3 verification outcomes,
acoustic specifications and amenity-grade comfort targets. The table below maps each R-value to typical Brisbane
warehouse applications. All values are AS/NZS 4859.1 certified material R-values; system Total R-values are lower
once framing thermal bridging is accounted for per
NCC 2022 Part J4D4.
| Earthwool R-value | Typical thickness | Primary application — Brisbane warehouse |
|---|---|---|
| R1.5 | ~75mm | Internal partition acoustic batts; office-to-warehouse partition walls; meeting-room acoustic separation |
| R2.0 | ~90mm | Internal stud walls between conditioned zones; light acoustic applications; mezzanine floor cavities |
| R2.5 | ~110mm | External cavity walls in mild conditions; ceiling batts where Section J is not the constraint |
| R3.0 | ~140mm | Standard ceiling batt for residential-grade office areas; legacy Class 5 spec where R3.7 not yet adopted |
| R3.5 | ~150mm | External wall batt for Class 5 office attached to warehouse; mid-range ceiling spec |
| R4.0 | ~195mm | Primary spec — above lined ceiling for NCC Section J Total R3.7 compliance, Climate Zone 2 |
| R4.5 | ~210mm | Higher Section J targets; JV3 verified pathways; offices with elevated NABERS targets |
| R5.0 | ~240mm | Cool-climate-zone-equivalent spec; Class 9b assembly buildings with high cooling loads |
| R6.0 | ~290mm | Maximum bulk-batt R-value; specialised JV3 outcomes; deep-cavity ceiling-truss applications |
R-values are AS/NZS 4859.1 certified material values, declared by Knauf Insulation Australia. Total system R-value
includes air-film, sarking and framing thermal-bridging contributions and is typically 0.2–0.5 lower than material
R-value. Insulation Guru Brisbane specifies to system targets, not material targets.
Knauf Earthwool for Brisbane Warehouse Applications
Earthwool batts require a substrate to install against — most commonly a lined ceiling above the office floor,
a framed stud wall cavity, or a battens-and-purlins structure with a fixed ceiling. Below are the six
warehouse-context applications where Earthwool is Insulation Guru Brisbane’s default specification.
The dominant Earthwool application. Earthwool R4.0 batts laid above the suspended grid or fixed plasterboard
ceiling of a warehouse office area. Delivers the Section J Total R3.7 target for the conditioned office
envelope without affecting the unlined warehouse roof above.
Picking, packing and despatch zones with HVAC conditioning. Earthwool R3.5 to R5.0 batts within framed
ceiling cavities or above fixed lined ceilings — typical in 3PL fulfilment centres and pharmaceutical
distribution warehouses where temperature control is operational, not just amenity-grade.
Dedicated office wings attached to warehouses (the most common Brisbane industrial estate configuration).
Earthwool R4.0 ceiling + R2.5 external cavity wall is the standard package — meets Section J J4D4 (roof)
and J4D6 (wall) targets for Class 5 in Climate Zone 2.
Staff areas where indoor air quality matters. The formaldehyde-free Earthwool product is typically the
default; we substitute Higgins polyester only on documented allergy-sensitive sites where itch-free handling
is a contract requirement.
Industrial sites with significant occupancy — training rooms, showrooms attached to warehouses, customer-
facing assembly spaces. Earthwool R4.0–R5.0 in ceiling and walls handles the higher cooling-load profile
of occupied spaces.
Earthwool R1.5 and R2.0 batts within stud-frame partition walls — meeting rooms, manager offices, dispatch
counters separating noisy warehouse from quiet office. Glasswool’s open-cell structure absorbs mid-frequency
sound effectively per AS/NZS 4859.1 acoustic test data.
colorbond roofing. For those bulk-warehouse roofs we specify
CSR Bradford Anticon roofing blanket — purpose-built
to install under metal roof sheets with foil-face exposed to the cavity. Earthwool batts above a lined ceiling
and Anticon blanket under the bare roof are complementary, not competing — most Brisbane warehouse jobs use
both.
How Knauf Earthwool Achieves NCC Section J Total R3.7
Brisbane sits in NCC Climate Zone 2, where
NCC 2022 Part J4D4
requires a Total R-value of R3.7 for the roof across all Classes 5–9 buildings (offices, retail,
warehouses, factories, assembly buildings) for downward heat flow. This is a Total R-value — the system value
including air-film, sarking and framing thermal-bridging contributions per AS/NZS 4859.1 — not the material
R-value alone.
The R4.0 Earthwool Specification Above a Lined Ceiling
Above a suspended or fixed lined ceiling, Knauf Earthwool R4.0 batts (~195mm) deliver a Total system R-value
of approximately R3.5 to R4.0 depending on framing density, ceiling void depth and air-film treatment.
The framing thermal-bridge correction across typical metal-framed warehouse office ceilings reduces material
R4.0 to system ~R3.5–R3.7 — meeting the J4D4 target with the standard batt R-value, no upgrade needed.
Where R4.5 or R5.0 Earthwool Is Specified
Where the Section J consultant has run a JV3 thermal performance verification (in lieu of Deemed-to-Satisfy),
a higher batt R-value may be specified to compensate for elevated wall U-values, glazed area or roof colour.
Earthwool R4.5 (~210mm) and R5.0 (~240mm) sit in deeper ceiling cavities — typical in newer A-grade tilt-slab
warehouse offices with more truss depth than legacy buildings.
Combined With Reflective Foil Sarking
For office-attached spaces under unlined warehouse roofs, the system pairs Earthwool R4.0 batts on the ceiling
with a reflective foil sarking layer above — adding ~R0.7 system contribution from the radiant barrier and
delivering a comfortable margin above R3.7 even with conservative framing assumptions. The sarking also
satisfies Part J4 condensation control where required by the DTS pathway.
Documentation and Lot-Number Traceability
Every Earthwool install is documented with batt R-value, installed thickness, coverage in m², and lot numbers
from the Knauf Insulation supply chain. The Section J compliance pack we hand certifiers includes AS/NZS 4859.1
certificates from Knauf, our installer sign-off, and a Total R-value statement against the project’s J4D4
target. Suitable for builder hand-over and Section J consultant verification.
Earthwool Installation — Four Steps to Sign-Off
Site walk-through, ceiling void depth measured, framing density assessed, BCA class confirmed. Section J
report reviewed (new build) or generated (retrofit). Earthwool batt R-value selected from R1.5 to R6.0
to match the Total R-value target.
Earthwool ordered direct through the Knauf Insulation Australia supply chain. Lot numbers and AS/NZS 4859.1
batch certificates recorded. Staged delivery so packs aren’t exposed before deployment.
Batts cut to fit, friction-fitted into framed cavities, abutted edge-to-edge with no gaps. Continuous
envelope per NCC J4D3(1). White Card holders, your-site SWMS, full WorkSafe Queensland-compliant safety systems.
Post-install Total R-value verification, lot numbers logged, coverage in m² recorded, Knauf compliance
certificates included. Section J pack handed to your certifier. 12-month workmanship defects period.
Knauf Earthwool vs Higgins Polyester vs Bradford Anticon
Glasswool, polyester and foil-faced glasswool blanket each have a defined warehouse application. The decision
isn’t “which is best” — it’s “which fits this space”. Earthwool is Insulation Guru Brisbane’s primary install
material, but we deploy all three depending on lined-versus-unlined construction, allergy sensitivity and
Section J target.
| Attribute | Knauf Earthwool (this page) | Higgins Polyester | Bradford Anticon |
|---|---|---|---|
| Material type | Bio-bound glasswool batt | Recycled-PET polyester batt | Foil-faced glasswool blanket |
| Primary application | Above lined ceilings, framed cavities | Allergy-sensitive amenities, offices | Under metal roof sheets, unlined warehouses |
| R-value range | R1.5 – R6.0 | R1.5 – R5.0 | R1.3 – R4.2 (60mm – 175mm) |
| Formaldehyde | None added (ECOSE binder) | None (no binder, thermal-bonded) | None added (also ECOSE-class glasswool) |
| Itch / allergy on install | Low — softer than legacy glasswool | None — hypoallergenic | Low — foil-face contains fibres |
| Cost / m² installed | $20–$30 | $25–$35 | $15–$25 |
| Acoustic performance | Excellent (open-cell) | Good | Good (with foil reflection) |
| AS/NZS 4859.1 certified | Yes — Knauf Insulation Australia | Yes — Higgins | Yes — CSR Bradford |
Earthwool vs Higgins Polyester — Allergy Sensitivity
For most Brisbane warehouse amenity-area installs, Knauf Earthwool is the default — it’s lower cost, higher
maximum R-value, better acoustic absorber, and the formaldehyde-free claim closes the indoor-air-quality
conversation. Higgins polyester is the upgrade for sites with documented allergy-sensitive workers, contract-
specified itch-free handling, or client preference for recycled-PET sourcing over recycled-glass sourcing.
Both are valid; Earthwool wins on dollars and decibels.
Earthwool vs Bradford Anticon — Lined vs Unlined Application
This isn’t a trade-off; it’s an application split. Earthwool batts need a lined ceiling above (or framed
cavity to sit within); Bradford Anticon roofing blanket rolls out under bare metal roof sheets across unlined
Class 7b storage volumes. A typical Brisbane warehouse retrofit pairs both: Earthwool R4.0 above the lined
office area for Section J compliance, Anticon 130 across the bulk warehouse roof for radiant-heat reduction
and conductive insulation. Specifying one in place of the other is the most common Section J retrofit
mistake we encounter. See our
Anticon blanket warehouse roof page for the
complementary install.
Knauf Earthwool — Indicative Installed Pricing
Earthwool batt installs are priced per square metre against the lined ceiling or cavity area, with the batt
R-value selected to match the Section J target. The ranges below cover access-friendly Brisbane warehouse
sites; final quote is subject to site survey, ceiling void depth, existing-insulation removal, and operational
coordination.
| Office / amenity area | Earthwool R3.5 | Earthwool R4.0 (Section J primary) | Earthwool R5.0 / R6.0 |
|---|---|---|---|
| 100 m² (small office wing) | $1,800–$2,400 | $2,000–$3,000 | $2,500–$3,800 |
| 250 m² (typical warehouse office) | $4,500–$6,000 | $5,000–$7,500 | $6,500–$9,500 |
| 500 m² (large office + amenities) | $9,000–$12,000 | $10,000–$15,000 | $13,000–$19,000 |
| 1,000 m² (Class 9b assembly building) | $18,000–$24,000 | $20,000–$30,000 | $26,000–$38,000 |
All prices ex GST. Indicative ranges for Earthwool batts above lined ceilings — Brisbane CBD and four major
industrial corridors. Cavity-wall Earthwool installs and acoustic partition installs quoted separately.
Pricing assumes Knauf Insulation Australia direct supply with current AS/NZS 4859.1 certification.
Knauf Earthwool Installs Across Brisbane Industrial Corridors
We deliver Earthwool warehouse installs across the same six SEQ industrial corridors as our broader warehouse
service — TradeCoast, Northern Industrial, South West Gateway, Logan/Yatala, Ipswich and Moreton Bay.
Earthwool packs are coordinated through the Knauf Insulation Australia supply chain with site-direct delivery.
Australia TradeCoast — Port + Airport
Freight and logistics tenants with conditioned office wings and Class 5/9b assembly buildings. Earthwool R4.0
is our default office spec across:
Eagle Farm ·
Pinkenba ·
Hemmant ·
Lytton ·
Murarrie ·
Brisbane Airport.
Northern Industrial — Geebung-Banyo Belt
Established traditional precincts with Class 5 office-attached configurations. Earthwool installs across:
Geebung ·
Brendale ·
Northgate ·
Banyo ·
Virginia ·
Narangba.
South West Industrial Gateway — Wacol & surrounds
Largest SEQ industrial corridor with A-grade tilt-slab and traditional warehouse stock. Earthwool R4.0–R5.0
across office wings of:
Wacol ·
Acacia Ridge ·
Carole Park ·
Darra ·
Sumner ·
Richlands ·
Heathwood ·
Larapinta ·
Salisbury ·
Rocklea ·
Coopers Plains ·
Parkinson ·
Archerfield.
Logan / Yatala Corridor — M1 Distribution
Large-format DC office wings and 3PL pick-pack admin areas. Earthwool installs across:
Yatala ·
Crestmead ·
Berrinba ·
Stapylton ·
Meadowbrook.
Ipswich Corridor — Inland Rail Belt
Western corridor distribution and intermodal admin offices:
Redbank ·
Bundamba ·
Swanbank.
Moreton Bay Growth Corridor
Northern industrial growth corridor:
North Lakes ·
Caboolture ·
Deception Bay ·
Burpengary.
Earthwool Installs With Full Documentation
- Knauf supply chain: Earthwool ordered direct from Knauf Insulation Australia, with current AS/NZS 4859.1 certification on every batch.
- Section J compliance pack: material lot numbers, AS/NZS 4859.1 certificates, installed thickness, m² coverage, Total R-value statement against your J4D4 target.
- Insurance: Public Liability cover and Workers Compensation in force per WorkSafe Queensland; certificates issued before site mobilisation.
- ICANZ-aligned product: Knauf is a member of the Insulation Council of Australia and New Zealand — your assurance of verified R-value claims and verified product quality.
- Defects period: 12 months on workmanship; manufacturer’s warranty on Earthwool material per Knauf’s current published terms.
- Coordination with builders & Section J consultants: direct work with your principal contractor, Section J consultant and certifier — no middleman.
Knauf Earthwool — Frequently Asked
Specifying Earthwool for a Brisbane warehouse office or amenities?
Insulation Guru Brisbane is a Knauf Earthwool specialist for Brisbane warehouses — bio-based binder,
formaldehyde-free, AS/NZS 4859.1 R1.5 to R6.0, full Section J documentation. Survey, spec, supply and install
coordinated through the Knauf Insulation Australia supply chain.
Or call our commercial team: 0494 157 102
- Phone: 0494 157 102
- Email: inquiries@insulationgurubrisbane.com.au
- Office: c/- Scarborough Business Centre, Level 1, Unit 4, 91 Landsborough Avenue, Scarborough QLD 4020
