Isotex ICF — Material Credentials
Performance.
Documented.
Evidenced.
Sustainability for EliteBlocc starts with what the system is made of and how it performs across a building's entire life. Three registered Environmental Product Declarations. LEED contribution support. ANAB-ICEA eco-building conformity. Evidence first. Marketing second.
Material composition
Three materials.
One system.
The Isotex ICF system combines three materials in a single permanent formwork unit. Each is documented, tested and source-verified. The performance is in the composition.
Cross-section shown: HDIII 44/23. Wood-cement shells 45mm each. Neopor® EPS 230mm. Reinforced-concrete core 120mm. Total wall depth 440mm.
A mineral composite of wood fibres and Portland cement. Breathable and hygroscopic — the outer layer regulates moisture vapour. Frost and thaw tested. Documented for air permeability and vapour transmission.
Hygroscopic regulation — wood fibres absorb and release moisture, buffering internal humidity naturally
Air permeability and steam permeability tested — source documents available in the technical register
Frost and thaw test — mineral durability confirmed for cold-climate specification
Graphite-enhanced EPS from BASF, integrated as the primary thermal barrier. Carries BMBcert certification for biomass-balanced production — a documented production-chain sustainability credential.
BMBcert — biomass-balanced production certification from BASF. Referenced as Neopor® BMBcert only
230mm EPS insert in HDIII 44/23 produces the published U-value of 0.11 W/m²K
Lambda thermal conductivity tested — test reports available in the technical source register
A structural continuous RC core poured in situ within the wood-cement formwork. The geometry controls concrete volume precisely, minimising material waste during pour without requiring specialist formwork removal.
Permanent formwork — wood-cement shell stays in place, eliminating stripping and disposal
Structural continuity — reinforced core supports loadbearing and mid-rise applications
Thermal mass — concrete core moderates internal temperature, reducing HVAC demand across building lifetime
Lifecycle performance
Sustainability through performance.
The materials do most of the sustainability work passively — through what they are, not what is added to them.
The reinforced concrete core absorbs heat during the day and releases it at night, dampening internal temperature swings. This reduces active heating and cooling demand over the building's operational lifetime.
HDIII range periodic thermal transmittance (Yie) values available in the thermal register. These quantify dynamic behaviour beyond static U-value performance.
Wood-cement is hygroscopic and breathable. The wood fibres within the cement matrix absorb excess moisture and release it as conditions change — buffering internal humidity naturally without mechanical intervention.
Air permeability, steam permeability and water vapour transmission test reports are available in the source documentation register. Values are assembly-specific.
Frost and thaw testing confirms resistance to freeze-thaw cycling. The mineral nature of wood-cement means no deterioration of the outer shell under thermal cycling — unlike materials that rely on organic coatings.
Frost and thaw test documentation available in the source register. Hygrometric test data confirms long-term material stability under moisture cycling.
The HDIII range, particularly the 44/23 configuration at U 0.11 W/m²K, supports NZEB and PassivHaus thermal targets. An ANIT NZEB energy classification study is available in the technical documentation set.
Source: NZEB — ANIT buildings new energy classification study. Reference for project-specific NZEB assessment by the appointed engineer.
Environmental Product Declarations
Three registered EPDs.
Environdec (International EPD® System) registered declarations covering the three main Isotex product categories. EPD documentation supports lifecycle assessment, green building scheme credits and Part Z specification.
Environmental Product Declaration covering Isotex wood-cement building block and wall system elements. Lifecycle assessment data for blocks used in wall construction across the HDIII and HB product families.
Applies to: HDIII wall systems · HB Formwork blocks
Environmental Product Declaration covering Isotex wood-cement floor slab elements. Lifecycle data for floor systems used in beam-and-block slab construction across the S-series floor range.
Applies to: Floor Systems S20 · S25 · S30 · S39 · S49
Environmental Product Declaration covering Isotex wood-cement acoustic barrier elements. Lifecycle assessment data for acoustic applications including partition and specialist noise-mitigation uses.
Applies to: Acoustic partition and barrier configurations
Green building schemes
LEED, BREEAM and ITACA.
EPD documentation and material credentials support credit contribution under international and UK green building assessment frameworks. Specific credit contributions must be verified by the appointed licensed assessor.
EPD documentation (S-P-01472, S-P-01291, S-P-01290) supports materials credits under LEED v4. LEED contribution guidance document available in the source register.
Source: Crediti-LEED.pdf · LEED sustainability guidelines and ITACA PROTOCOL.pdf — sustainability documentation register (SUS-005, SUS-014)
Environdec-registered EPDs support the Mat 01 (Life Cycle Impacts) credit assessment under BREEAM UK New Construction. EPDs must be provided to the licensed assessor for credit calculation.
EPDs S-P-01472-2024, S-P-01291-2024 and S-P-01290-2024 available for assessor use. Specific credit value determined by the licensed BREEAM assessor.
The LEED sustainability guidelines and ITACA Protocol document (SUS-014) supports specification under the Italian ITACA building sustainability assessment framework.
Source: LEED sustainability guidelines and ITACA PROTOCOL.pdf — sustainability documentation register. Reference for Italian projects.
Additional credentials
Further material certifications.
Isotex eco-building material conformity confirmed under ANAB-ICEA certification. The conformity certificate is available in the sustainability documentation set.
isotex-certificate-conformity-eco-building-material-ANAB-ICEA.pdfRadioactivity-free material certificate issued for Isotex products (2019). Available in the sustainability documentation register for specification and compliance review.
Radioactivity free certificate-2019-Isotex.pdfBASF biomass-balanced production certification for the graphite-enhanced Neopor® EPS used in HDIII system configurations. Referenced as Neopor® BMBcert only.
BASF Neopor® BMBcert · biomass-balanced production certificationSustainability documentation
Download sustainability resources.
— Elite Blocc · Authorised Isotex Distributor
Evidence-based.
Every document.
Three registered EPDs. LEED and ITACA contribution support. ANAB-ICEA eco-building conformity. Neopor® BMBcert EPS. 38 years of Isotex material knowledge behind every recommendation.
All sustainability claims reference specific source documents in the Isotex technical documentation set. Environmental Product Declarations are registered with the International EPD® System (Environdec). LEED and BREEAM credit contributions must be verified by the appointed licensed assessor against the current edition of each scheme. Specific credit values are not guaranteed. NZEB classification is project-specific and must be confirmed by the appointed engineer. Performance values are product- and assembly-specific and are based on supplied Isotex technical documentation — final design, structural, thermal and compliance decisions must be made by the appointed project professionals.