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Material profile  ·  Bio-based  ·  Construction & Interior Design

Wood Fiber (Fibre) Insulation: Performance, Carbon and Fire Data for Designers

Sourced data on conductivity, moisture, fire, carbon and certification for architects who specify wood fibre insulation.

ArchitectsInterior designers

By Pilar Flores· Published October 7, 2026· Updated October 8, 2026· 8 min read

Wood fibre insulation properties at a glance

Family
Bio-based, wood-fibre thermal insulation (softwood)
Origin
Softwood chips from sawmills. Gutex states that about 95 % of its loose-fill product is untreated spruce and fir from the southern Black Forest.[7] STEICO's STEICOtop EPD lists Polish wood.[5]
Production
Chips are steamed and defibrated. Per STEICO's 2016 EPD (since lapsed), wet-process fibres are mixed with water, pressed into boards and dried at 160–200 °C; dry-process fibres are dried, mixed with bi-component fibres and heated into a mat.[8] STEICO's dry-process sheathing board uses polyurethane resin.[9]
Forms
Flexible batts (STEICOflex 038: about 50 kg/m³;[1] Pavaflex: 40–240 mm[2]) · rigid boards (Pavatherm-Combi: 145 kg/m³, tongue and groove[3]) · loose fill (Gutex Thermofibre: about 35 kg/m³ installed[7])
Thermal conductivity (λ)
Declared 0.038 W/(m·K) for STEICOflex 038, Pavaflex, Gutex Thermofibre and Hunton Nativo; 0.041 for Pavatherm-Combi.[1][2][7][4][3] In a University of Maine test of dry-process boards at 23.9 °C mean temperature, λ rose from 0.038 at 110 kg/m³ to 0.047–0.048 at 140–180 kg/m³; the abstract gives an overall range of 0.038 to 0.055.[10]
Density
Loose fill 25–50 kg/m³ depending on the application (Gutex); batts about 50 kg/m³; boards 110–180 kg/m³ in the independent test, 145 kg/m³ for Pavatherm-Combi.[7][1][10][3]
Reaction to fire
Euroclass E under EN 13501-1 on every datasheet we read (batts, board, loose fill).[1][2][3][7][4][11] Loose fill carries added fire retardant.[7][4]
Embodied carbon (A1–A3)
STEICOtop board (140 kg/m³): GWP-total −138 kg CO₂e/m³, of which fossil +105 and biogenic −244. STEICOflex batt (50 kg/m³): −47.8 total, fossil +35.9, biogenic −83.8.[5][6] The EPDs' modelled end-of-life scenario (incineration, module C3) releases the biogenic part again.[5][6]
Emissions
STEICO's 2016 EPD states its wood fibre products are made without formaldehyde-containing adhesives and cites a test of STEICOtherm at 0.02 mg/m³ after 28 days.[8] natureplus guideline RL0104 tests content and emissions of boards.[12] We found no current emission test report for the products in our table.
Moisture behaviour
Vapour-open. Datasheet μ values are 1–3 (STEICOflex 2, Pavatherm-Combi 3, Gutex loose fill printed as 1/2).[1][3][7] Measured vapour permeability of the Maine boards was 65–90 ng·s⁻¹·m⁻¹·Pa⁻¹; liquid water uptake was 2.5–20 % by volume, lower with paraffin wax.[10]
Certifications seen
IBU and EPD Global EPDs, found in their registers[7][5][13][14] · ETA-12/0181 for Gutex loose fill[15] · SINTEF Certificate 3397 for Hunton loose fill, found on SINTEF's register[4][16] · Keymark 011-7D021, printed on a Pavatherm-Combi datasheet, not found in a register[3] · natureplus certificates for Gutex Thermofibre (valid to 09/2028 as printed) and for four Gutex boards (lapsed)[17][12]. See the supplier table.

Wood fibre insulation turns sawmill chips into a vapour-open insulant. Designers choose it for roofs, timber-frame walls and retrofit work where moisture, summer comfort and a bio-based build-up matter.

Most numbers below come from manufacturers, so we label them as such.

What is wood fibre insulation and how is it made?

Wet and dry process

STEICO's 2016 EPD, which has since lapsed, describes both routes. Wood chips are heated under steam pressure and defibrated. In the wet process the fibres become a paste with water, are pressed into a board and dried. In the dry process the fibres are dried in a cyclone dryer, bi-component fibres are added, and the mixture is heated into a mat.[8] STEICO states that its wet-process boards and its STEICOflex batt use no isocyanate binders.[8] Its dry sheathing board STEICOspecial is bound with polyurethane resin and coated with paraffin wax.[9] A 2024 peer-reviewed study also names wet and dry processes and tested dry-process boards bonded with pMDI.[10]

Three forms

Flexible batts are friction-fitted between studs and rafters.[6] Rigid boards serve as sarking, sheathing or facade insulation.[3][9] Loose fill is blown into cavities by certified installers using machines.[7] Loose fill is outside EN 13171, so Gutex relies on a European Technical Assessment and Hunton on a SINTEF certificate.[18][7][4]

How does wood fibre insulation perform?

Thermal conductivity

Declared values sit close together. STEICOflex 038 and Pavaflex declare 0.038 W/(m·K); STEICOflex also lists a German design value of 0.040.[1][2] STEICO's EPDs list 0.036 (STEICOflex) and 0.04 (STEICOtop) as technical data; we use the datasheet values.[6][5] The independent Maine measurements show why density matters: 0.038 at 110 kg/m³ and about 0.048 at 180 kg/m³.[10] Compare products at the declared λ and the thickness you need, not at the product name.

Moisture and vapour

The Maine boards had a porosity of 85–92 % and a vapour permeability far above EPS, which the paper cites as impermeable.[10] The material is hygroscopic: the authors measured λ rising from 11 to 30 °C mean temperature and falling above 30 °C, and suggest moisture leaving the board.[10] Manufacturers set clear limits: store dry, and install only in a dry state.[1][3] Pavatherm-Combi may be left exposed on a rear-ventilated facade for 60 days at most.[3]

Heat storage and summer comfort

STEICO and Soprema list a specific heat capacity of 2,100 J/(kg·K) on their datasheets.[1][2][3] Soprema's Pavaflex sheet presents this heat-accumulating capacity as a benefit against summer heat transmittance.[2] We found no independent measurement of time lag or overheating for wood fibre roofs, so treat the claim as a manufacturer argument.

How does wood fibre insulation behave in fire?

All datasheets we read declare Euroclass E, the second-lowest class on the A1 to F scale of EN 13501-1.[1][2][3][4][19] The material is combustible. Loose fill is impregnated: Gutex adds an ammonium salt and Hunton uses a fire retardant.[7][4]

Two papers matter for detailing. A 2018 study tested four loose-fill products and found that fibre size and the amount of retardant seem to influence smouldering ignition. One smouldering type reached 660–700 °C with 80–90 % mass loss, which the authors say risks a transition to flaming and is a considerable fire hazard; they describe the work as exploratory and the results as indicative.[20] For boards, a 2025 study measured a charring rate of 2.6 mm/min under the ISO 834 standard fire for the most common board type.[21] Both findings come from abstracts. Ask the supplier for the test report that matches your build-up, and do not rely on Euroclass E alone.

How much carbon does wood fibre insulation hold?

What the EPDs show

Under EN 15804+A2, the tree's carbon uptake counts as a negative biogenic term in the production stage. For STEICOtop, A1–A3 GWP-total is −138 kg CO₂e per m³, made of +105 fossil and −244 biogenic. At end of life the EPD models incineration with energy recovery, which adds +239 in C3, and credits −102 in module D.[5] STEICOflex follows the same pattern: −47.8 in A1–A3 and +82.9 in C3.[6] For Gutex Thermofibre, per kg, A1 is −1.57, A3 is +0.48 and C3 is +1.61 kg CO₂e, and fossil heat accounts for 89 % of the fossil GWP.[7]

Read the number with care

The STEICOtop EPD uses a market-based electricity factor of 0.03 kg CO₂e/kWh (wind) for 49.82 kWh and lists a location-based factor of 0.90 for the same electricity.[5] EPDs for different products also use different functional units (m³ or kg) and different background data, so do not compare totals across them. STEICO SE authored the life cycle assessment in its two EPDs; Gutex's was authored by the Thünen Institute for Wood Research. The STEICOtop EPD describes verification through EPD Global's approved EPD tool, the Gutex EPD names an external verifier, and the STEICOflex EPD states independent verification without naming a verifier.[5][6][7]

A 2021 peer-reviewed study set in Germany compared four bio-based insulants with EPS and stone wool from cradle to grave. Wood fibre and miscanthus were the most environmentally friendly bio-based options, and bio-based products beat EPS and stone wool in 11 of the 18 impact categories. Manufacturing was the hotspot for wood fibre, and EPS and miscanthus were the most cost-efficient.[22]

Which standards and certificates apply?

Factory-made boards and batts fall under EN 13171, which excludes in-situ products and which STEICO's EPD calls a harmonised standard.[18][5] The 2012 edition was withdrawn in 2015 and replaced by EN 13171:2012+A1:2015.[18] Reaction to fire is classified under EN 13501-1:2018.[11]

natureplus publishes award criteria for wood-fibre boards below 230 kg/m³ and for blown-in lignocellulose fibres.[23] A natureplus certificate (0104-0604-012-3) for four Gutex boards covers environment, health and function, including laboratory tests of content and emissions. It was valid to April 2024, and we found no current one for those boards.[12] A separate certificate, 0105-1402-012-1, covers GUTEX Thermofibre loose fill (dated 14 November 2024, validity printed as 09/2028); natureplus's online page for it was empty, so we have only the PDF.[17] STEICO's batt datasheet claims PEFC-certified wood and compliance with the German QNG criteria; these are manufacturer claims. STEICO's website lists a PEFC licence number; we could not search the PEFC register.[1][24]

Where is wood fibre insulation used, and what are the limits?

Roofs and timber-frame cavities

Best for: architects · self-builders

Batts suit cavities between rafters, joists and studs.[1][2]

Rigid boards for sarking and facades

Best for: architects · retrofit designers

Boards add continuous insulation over rafters and behind rear-ventilated cladding.[3] Pavatherm-Combi's 40 mm thickness is not approved for roofs.[3]

Loose fill for retrofit

Best for: retrofit designers · installers

Machine-blown fill suits closed cavities and accessible loft floors.[7] Check settlement: Gutex reports under 10 % after impact and under 1 % after vibration, and Hunton's certificate lists settlement classes SH 20 and SC 0.[7][4]

Product and industrial designers

Best for: product designers

We found no sourced data on wood fibre insulation in product design.

Where has wood fibre insulation been used in real projects?

The three projects below are documented by manufacturer or trade-press case studies. We found no independent performance monitoring for them.

New Warehouse roof, Science and Industry Museum, Manchester

Architect: Buttress · 2024–2025

Buttress is the architect for the roof repair of the Grade II listed New Warehouse, and its journal says the museum is adding wood-fibre roof insulation, with completion expected by mid-2025.[25] STEICO's case study names STEICOspecial dry sheathing boards over 3,500 m², mostly 180 mm thick, with Heritage Conservation Restoration as contractor.[9]

Manor Farm, Oxfordshire

Designer: Transition by Design (Alex Towler) · article dated 2021

A listed Georgian house and new extension. The Building Centre article lists Pavaflex (120 mm between ceiling joists, 200 mm between rafters, 220 mm in the extension roof), Pavadentro on stud walls and Pavatex Diffutherm on the extension.[26]

The Paddock, timber-frame cottage

Designer and builder: Mac Eye Projects · 2020

A 1.5-storey timber-frame bungalow built with Soprema ISOLAIR woodfibre board, delivered June 2020; external rendering of the walls was completed in October 2020. The NBS Source case study is titled “Built to Passivhaus Standards” but its text speaks only of ambitious sustainability and energy efficiency goals and does not state formal certification.[27]

Where to buy wood fibre insulation in Europe

Suppliers selected by our editors and checked against company documents and certificate records where available.

SupplierProductsCountryCertifications
STEICO SE STEICOflex batts, STEICOtop boards Germany (plants in Poland and France) EPD Global NEPD-11326-11326-2 (STEICOtop) and NEPD-11346-11346-2 (STEICOflex), issued 27.03.2026, valid to 26.03.2031; both in the EPD Global register.[5][6][13] PEFC claim on the batt datasheet, register not searched.[1][24]
GUTEX Thermofibre loose fill Germany IBU EPD-GTX-20240357-IBA1-DE, valid 15.04.2025 to 14.04.2030 per the EPD, listed in the IBU register; ISO 14001/EMAS site per the EPD.[7][14] ETA-12/0181 (17 May 2019), read on the DIBt site.[15] natureplus 0105-1402-012-1 (Thermofibre), validity printed as 09/2028.[17] The natureplus certificate for Gutex boards had lapsed.[12]
Soprema (Pavatex range) Pavaflex batts, Pavatherm-Combi boards Not stated on the datasheets we read Keymark 011-7D021 printed on the Pavatherm-Combi datasheet; not found in a public register, so treat it as a company claim.[3][2]
Hunton Fiber Nativo loose fill Norway SINTEF Certificate 3397, valid until 01.12.2028; entry found on SINTEF's register.[4][16]

Certificate numbers come from the documents named in the sources; rows say where a register entry was also found. Confirm them with the issuer before specifying. Listing policy: editorial selection, not paid.

Frequently asked questions about wood fibre insulation

What is wood fibre insulation made of?

Softwood chips that are defibrated, then formed into batts, boards or loose fill. Binders vary: bi-component fibres in some batts, polyurethane resin in some dry-process boards, and added fire retardant in loose fill.

What is the thermal conductivity of wood fibre insulation?

The datasheets we read declare 0.038 W/(m·K) for batts and loose fill and 0.041 for a 145 kg/m³ board. In an independent test at about 24 °C, denser boards measured up to 0.048; the paper's abstract gives an overall range of 0.038 to 0.055.

Is wood fibre insulation fireproof?

No. Every product we read is Euroclass E, and research shows loose fill can smoulder. Fire detailing and a test report for your build-up are needed.

Is wood fibre insulation carbon negative?

In the production stage, EPDs show a negative total because of stored biogenic carbon. The same EPDs model that carbon returning at end of life through incineration, so the net depends on how the material is actually disposed of.

Is wood fibre insulation breathable?

Yes. Datasheet μ values are 1 to 3, and measured permeability was far above EPS. It is hygroscopic, so keep it dry during storage and installation.

Does wood fibre insulation keep a house cool in summer?

Manufacturers cite a heat capacity of 2,100 J/(kg·K). We found no independent overheating or time-lag measurement.

Which standards cover wood fibre insulation?

Factory-made boards and batts follow EN 13171 and are classified for fire under EN 13501-1. Loose fill is assessed through a European Technical Assessment or a national certificate.

The bottom line on wood fibre insulation

Wood fibre insulation is a documented, vapour-open option with declared λ values close to 0.04 W/(m·K) and EPDs that state independent verification. Its limits are fire class E, moisture exposure on site and carbon figures that depend on end-of-life assumptions. Ask each supplier for the current EPD, the fire test for your build-up and the registry entry for any certificate it cites.

Related materials

Sheep wool insulationBio-based Hemp & hempcreteBio-based CorkBio-based Straw baleBio-based

Sources

  1. STEICO SE (2026). Technisches Merkblatt STEICOflex 038, version 8, dated 2026-09-21 (regional validity DE, AT, CH). Source of λD 0.038, design value 0.040, density about 50 kg/m³, μ 2, c 2,100 J/(kg·K), Euroclass E, composition, PEFC and QNG claims, storage and dust advice. Manufacturer datasheet (company claims); full text read. PDF (steico.com)
  2. SOPREMA (undated). Technical data sheet BETF-INSEU0029.a/EN, PAVAFLEX flexible insulation board: density 50 kg/m³, λd 0.038 W/(m·K) (EN 13171), c 2,100 J/(kg·K), Euroclass E, thicknesses 40–240 mm. Manufacturer datasheet, company claims; full text read. PDF (copy hosted by distributor Womersleys)
  3. SOPREMA (undated). Technical data sheet BETF-PAVAT0028.a/EN, PAVATHERM-COMBI woodfibre insulation board: density 145 kg/m³, λd 0.041 W/(m·K), μ 3, c 2,100 J/(kg·K), Euroclass E, compressive strength 100 kPa at 10 %, Keymark 011-7D021 as printed, exposure and storage limits. Manufacturer datasheet; the Keymark number was not checked in the registry. Full text read. PDF (soprema.fr)
  4. SINTEF Certification (revised 25.09.2024). SINTEF Product Certificate No. 3397, Hunton Nativo wood fibre loose-fill insulation (Hunton Fiber AS, Gjøvik; manufacturer site Bybrua, Norway): λD 0.038 W/(m·K) at 27–40 kg/m³, settlement classes SH 20 and SC 0, Euroclass E (23–55 kg/m³, ≥40 mm), against EN 15101-1; valid until 01.12.2028. Third-party certificate, full text read; register entry in source 16. PDF (sintefcertification.no)
  5. STEICO SE (2026). Environmental Product Declaration, STEICOtop, EN 15804+A2, declared unit 1 m³ (140 kg), A1–A3, A4, C1–C4 and D; NEPD-11326-11326-2, programme operator EPD Global (Oslo), issued 27.03.2026, valid to 26.03.2031, year of study 2024, ecoinvent 3.10. Source of GWP values, biogenic carbon, electricity factors, composition and the "harmonised standard EN 13171" statement. Manufacturer-authored LCA, third-party verified under EPD Global's tool route; full text read. PDF (steico.com)
  6. STEICO SE (2026). Environmental Product Declaration, STEICOflex (flexible dry-process batt), EN 15804+A2, declared unit 1 m³ (50 kg), NEPD-11346-11346-2, EPD Global, issued 27.03.2026, valid to 26.03.2031; average of plants in Poland and France. Source of GWP values. Manufacturer-authored; the document states independent verification but names no verifier; full text read. PDF (steico.com)
  7. GUTEX Holzfaserplattenwerk H. Henselmann GmbH + Co KG (2025). Umwelt-Produktdeklaration GUTEX Thermofibre (loose-fill wood fibre), EN 15804+A2, declared unit 1 kg, EPD-GTX-20240357-IBA1-DE, Institut Bauen und Umwelt e.V. (IBU), issued 15.04.2025, valid to 14.04.2030, external verifier Dr. Daniela Kölsch. Source of density, λ, μ, fire class, ETA-12/0181, settlement, fire retardant, installation, GWP per module. German text read in full; LCA by the Thünen Institute for Wood Research, declaration owned by Gutex, independently verified; listed in the IBU register (source 14). PDF (gutex.de)
  8. STEICO SE (2016). Environmental Product Declaration, STEICO wood fibre insulation (average of wet- and dry-process products), EPD-STE-20150327-IBD1-EN, IBU, issued 05.02.2016, valid to 04.02.2021 (lapsed). Used only for the description of the wet and dry production sequences, the no-isocyanate statement and the formaldehyde test (cited by STEICO, test report not seen; its date is printed as 21.05.2105). Manufacturer document; full text read. PDF (copy hosted by distributor Back to Earth)
  9. STEICO UK, case study "STEICO wood fibre roof insulation supports thermal upgrade of the iconic Grade II listed Manchester Museum": STEICOspecial dry sheathing boards (3,500 m², 180 mm majority; wood fibre, polyurethane resin, paraffin wax), architect Buttress, contractor Heritage Conservation Restoration, supplier Mike Wye, February 2024 to summer 2025. Manufacturer case study. steico.com
  10. Snow, J., Herzog, B., O'Brien, L. & Li, L. (2024). "Characterization of wood fiber insulation for the development of wood fiber-insulated panels (WIPs) for use in building envelope." BioResources 19(3):6142–6159. Independent peer-reviewed study (University of Maine) of dry-process boards at 110, 140 and 180 kg/m³: λ (ASTM C518), vapour permeability, porosity, water uptake. Full text read. doi:10.15376/biores.19.3.6142-6159
  11. Standard Norge, catalogue page for NS-EN 13501-1:2018, "Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests": published 1 March 2019 (edition 2018-12). Independent catalogue page; it does not list the classes and the standard text was not read. online.standard.no
  12. natureplus e.V. certificate 0104-0604-012-3 (2021-06-07) for GUTEX Thermosafe-wd, Thermoinstal, Thermoroom and Thermosafe-nf, award guideline RL0104 Holzfaserdämmplatten; test programme: environment, health, function, laboratory test of content and emissions. Validity printed as April 2024 (lapsed). Certifier document, full text read; hosted by CRB (Swiss building data centre); no current certificate found. PDF (crb.ch)
  13. EPD Global (Norwegian EPD Foundation) public register, entries for STEICOtop (NEPD-11326-11326-2) and STEICOflex (NEPD-11346-11346-2): owner STEICO SE, registered 27.03.2026, valid to 26.03.2031, English PDFs listed. Programme operator's register; the PDFs themselves are read as sources 5 and 6. STEICOtop · STEICOflex
  14. Institut Bauen und Umwelt e.V. (IBU), EPD-online list of published EPDs: GUTEX Thermofibre, EPD-GTX-20240357-IBA1-DE, EN 15804+A2, PCR "Einblasdämmstoffe aus Zellulose- und Holzfasern". The list view shows no validity dates; those come from the EPD itself (source 7). Programme operator's register. epd-online.com
  15. Deutsches Institut für Bautechnik (DIBt), European Technical Assessment ETA-12/0181 of 17 May 2019 (replaces the version of 21 June 2017): "GUTEX Thermofibre", loose free wood fibres, EAD 040138-00-1201. Source of Euroclass E, λD(23,50) 0.038 W/(m·K), μ 1 to 2, moisture conversion factor 1.02, settlement under impact ≤ 10 % and under vibration SC 0 (≤ 1 %). Technical assessment body's own document, full text read. PDF (dibt.de)
  16. SINTEF Certification register, search "Hunton Nativo": PS 3397, Hunton Nativo trefiberisolasjon, holder Hunton Fiber AS, expiry 01.12.2028. Certifier's register. sintefcertification.no
  17. natureplus e.V. certificate 0105-1402-012-1 for GUTEX Thermofibre (blow-in insulation of wood fibres), dated Neckargemünd 2024-11-14, validity printed as 09/2028. Certifier document, full text read; the PDF is a copy hosted by a Gutex document service, and natureplus's online certificate page for this number was empty when checked. PDF (copy) · natureplus-label.org
  18. Estonian Centre for Standardisation and Accreditation (EVS), catalogue page for EN 13171:2012, "Thermal insulation products for buildings - Factory made wood fibre (WF) products - Specification": scope (rolls, batts, boards; in-situ products excluded); withdrawn 02.04.2015 and superseded by EN 13171:2012+A1:2015. Independent catalogue page; the standard text itself was not read. evs.ee
  19. Measurlabs (undated), "EN 13501-1 standard for fire classification of construction materials: overview of performance classes and criteria": construction products excluding floorings are classed A1, A2, B, C, D, E and F. Testing-laboratory explainer (secondary source); the standard text was not read. measurlabs.com
  20. Steen-Hansen, A., Mikalsen, R.F. & Jensen, U.E. (2018). "Smouldering combustion in loose-fill wood fibre thermal insulation: an experimental study." Fire Technology 54(6):1585–1608. Independent peer-reviewed bench-scale tests on four loose-fill products. Abstract read on the publisher page (published 16 July 2018); the full text is behind a paywall and was not read. doi:10.1007/s10694-018-0757-4
  21. Karolin, J.P., Rahiminejad, M., Ghazi Wakili, K., Olaechea, L.M. & Renfer, C. (2025). "Deriving the charring rate of a wood fibre insulation board by exposure to the ISO 834 standard fire." Fire and Materials 50(2):135–144. Independent peer-reviewed paper (charring rate 2.6 mm/min, 60 min exposure). Abstract read via Crossref; full text not accessed. doi:10.1002/fam.70030
  22. Schulte, M., Lewandowski, I., Pude, R. & Wagner, M. (2021). "Comparative life cycle assessment of bio-based insulation materials: Environmental and economic performances." GCB Bioenergy 13(6):979–998. Independent peer-reviewed cradle-to-grave LCA and LCC of wood fibre, hemp, flax and miscanthus against EPS and stone wool, Germany. Abstract read (via Crossref); full text not accessed. doi:10.1111/gcbb.12825
  23. Umweltbundesamt (Germany), "Dämmstoffe" (last updated 06.07.2022): lists natureplus award criteria for wood-fibre boards below 230 kg/m³ and for blown-in and loose-fill lignocellulose fibres. Institutional page; it gives no technical values. umweltbundesamt.de
  24. STEICO UK, "FSC and PEFC certifications" page: lists a PEFC certification number and licence number for the STEICO Group. Company page; the PEFC register could not be searched (bot check), so the certificate itself was not seen. steico.com
  25. Buttress Architects, journal, 31 January 2024, "Work begins at Manchester's Science and Industry Museum": New Warehouse roof repair, £14.2 million DCMS-funded programme, additional natural wood-fibre roof insulation, completion expected mid-2025. Architect's own page; product not named. buttress.net
  26. Building Centre (UK) news article, 13 August 2021, "Pavatex delivers a manor reborn to sustainability": Manor Farm, a listed Georgian house in Oxfordshire; designer Transition by Design (Alex Towler); Pavaflex, Pavadentro, Pavatex Diffutherm and Pavatherm quantities as listed. Trade-press article supplied by the manufacturer; no monitoring data. buildingcentre.co.uk
  27. NBS Source, case study "The Paddock: bespoke cottage built to Passivhaus standards": Mac Eye Projects, SOPREMA ISOLAIR woodfibre board (Pavatex range), delivered June 2020, external rendering completed October 2020. Manufacturer-supplied case study; the title says built to Passivhaus standards, formal certification is not stated. source.thenbs.com
Wood fibre insulation Bio-based Insulation Timber frame EPD Retrofit