Cork as a Sustainable Material: Properties, Uses and Certifications
Cork properties, uses and certifications for designers: λ, density, fire class, EPD carbon data, suppliers and what the research says. With sources.
A curated editorial platform for architects and designers exploring the frontier of sustainable, bio-based, and innovative building materials.
Sourced data on sustainable materials: properties, standards, certifications and suppliers.
Cork properties, uses and certifications for designers: λ, density, fire class, EPD carbon data, suppliers and what the research says. With sources.
Cork wall tiles: formats, glue-on fixing, sound absorption αw, fire class, emissions and wet-room limits, read from manufacturer datasheets. With sources.
Bamboo flooring and building material: density, fire class, EPD carbon data, formaldehyde and binders, suppliers and what the evidence supports.
Hemp and hempcrete for designers: λ, density, fire class, EPD carbon data, codes and suppliers, and where carbon-negative claims need care. With sources.
Mycelium materials for designers: what is on sale vs prototype, λ, density, fire class, moisture limits, suppliers and sources.
Clay plaster for interior walls: DIN 18947 classes, λ, fire class, moisture buffering, EPD carbon data, and suppliers in Spain and Europe. With sources.
Lime plaster for walls: air lime vs NHL, EN 998-1 classes, declared µ and λ, curing guidance, EPD carbon data and heritage use. With sources.
Rammed earth walls: stabilised vs unstabilised, cement ranges in codes, NZS 4297, New Mexico code, strength, thermal data and LCA studies. With sources.
Compressed earth blocks (CEB, CSEB): stabiliser ranges, Rwanda, Spanish, German and Indian standards, strength and thermal data, carbon studies. Sourced.
Low carbon concrete: CEM II and CEM III cements, GWP limits via EPDs, exposure-class limits, early strength, and a sourced EPD comparison table.
Geopolymer concrete: precursors, activators, standards status (PAS 8820 withdrawn, SA TS 199), a sourced airport project and carbon declarations compared.
Recycled plastic panels in architecture: feedstock claims, fire classes, thermal movement, end-of-life scenarios and a sourced EPD table for five makers.
Recycled glass surfaces by binder: cement, resin and fired mosaics. Recycled content as each document states it, test values and EPDs in sourced tables.
Recycled aluminium (recycled aluminum) in buildings: recycled content as EPDs state it, carbon per declared unit, and when to specify it.
Recycled textile insulation from cotton, denim and PET fibre: what each document states for λ, density, fire class, moisture, settlement and EPDs.
Sourced data on reclaimed timber: US carbon comparison, structural grading gaps, fire class, lead-paint risk and FSC Recycled claims.
Sourced data on linen textiles: Masters of Linen scope, fibre-level carbon, Martindale and fire testing, and supplier certificates.
Wood fiber insulation (wood fibre) explained: declared λ, moisture, fire class E, EPD carbon figures, standards and suppliers, with every number sourced.
Straw bale construction explained with sourced λ, fire, moisture limits, codes and verified EPDs, for architects and designers.
Sheep wool insulation: declared conductivity, fire class, moth treatment, EPD carbon figures and applicable standards, from datasheets, ETAs and studies.
Cellulose insulation explained: declared conductivity, settlement, fire class, EPD carbon figures, standards and suppliers, from sourced documents.
Flax insulation explained: declared λ, fire class E to C, moisture limits, ETAs, carbon data gaps and verified suppliers. Sourced, with gaps stated.
Linoleum flooring explained with sourced data: composition, EN ISO 24011, fire and slip classes, EPD carbon figures, emissions labels, care and suppliers.
Cross-laminated timber explained: declared λ, fire class D-s2,d0, charring rates, EPD carbon figures, standards and suppliers, every number sourced.
Glulam beams explained: strength classes, Euroclass D, charring rate, EPD carbon figures, EN 14080 and suppliers, with every number sourced.
Thermally modified wood explained: Thermo-S and D classes, EN 350 durability, strength loss, fire, EPD carbon figures and suppliers, all sourced.
Acetylated wood explained: EN 350 class 1, density, fire, acetic acid and fixings, Accoya EPD carbon figures and certificates, all from Accsys documents.
Furfurylated wood explained: Kebony durability class, hardness, fire class, EPD carbon figures, certificates and fixings, all read from source documents.
Charred timber cladding (shou sugi ban) explained: char depth, fire evidence, weathering, EPDs and manufacturer documents, with every figure sourced.
Earlier pieces from the journal, shown while we rebuild them with sourced data.
Sustainable cork flooring: Wicanders and Granorte documents on formats, fire classes, indentation, emissions labels, EPDs and installation limits.
Graphenstone paint read from the company data sheets, EPD and certificates: product lines, declared classes, EPD values and registry entries.
Hemp insulation and wood fibre insulation compared from ETA, EPD and datasheet values: conductivity, density, fire class, carbon units, certificates.
Forbo Marmoleum explained from Forbo's own documents: sheet, Decibel, Modular and Click families, fire classes, EPD figures, certificates and care limits.
Ventilated terracotta facade cladding read from makers' own documents: Argeton, NBK and Moeding approvals, EPDs, EN 14411, fire and frost.
Rubio Monocoat Oil Plus 2C and Osmo Polyx-Oil compared from their data sheets: coats, coverage, cure times, VOC, certificate claims and what is unverified.
Mass timber interiors with exposed CLT: surface classes from KLH, Stora Enso and Swedish Wood, fire class, finishes, humidity movement, emissions.
About Soul Materials
Soul Materials is an independent editorial platform dedicated to sustainable building materials for the architecture and design community. We research and cross-check the evidence on bio-based, recycled, and innovative materials, cite every source, and say plainly what we could not verify.
Based in Spain, with eyes on Europe and beyond. We believe the materials we build with are not just technical decisions — they are statements about what we value and what kind of future we are shaping.