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EJOT CROSSFIX is the concealed support system behind the visible rainscreen cladding at Aire Lofts and District Lofts in Leeds. At District Lofts, EJOT reports a design with 250 mm of insulation and a weighted U-value of 0.13 W/m²K. The case study describes how the substructure was configured to support two types of fibre-cement cladding while addressing thermal-bridging, ventilation and façade-layout requirements. Those are project-specific results, not guaranteed performance figures for every CROSSFIX installation.
What is CROSSFIX, and what does it do behind the cladding?
CROSSFIX is a façade substructure: the support assembly between a building’s wall and the visible rainscreen cladding. It is not the cladding itself. In a rear-ventilated façade, the cladding is held away from the wall, leaving a cavity behind it. The substructure connects the outer finish to the supporting wall and accommodates the parts needed to secure the façade.
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The system described in EJOT’s Environmental Product Declaration (EPD) includes wall consoles, support profiles, a thermal separator, fasteners and related components. For the Leeds project, EJOT reports a mix of consoles, profiles and stainless-steel fixings. The exact arrangement is a design choice for the project—not a universal kit of identical parts for every wall, cladding type or façade geometry.
This distinction matters when reading claims about appearance or energy performance. CROSSFIX can help support a chosen cladding layout and an insulated wall assembly, but the finished appearance is determined by the cladding and façade design. Whole-wall thermal performance depends on the complete build-up and its design, not on the substructure name alone.
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How can a rainscreen combine insulation and appearance?
The basic design challenge is to fit the support structure, insulation and ventilated cavity behind a façade finish without letting the substructure’s connections undermine the wall’s thermal design. In Leeds, EJOT says stainless steel’s lower thermal conductivity and a console thermal stop reduce the potential for thermal bridging. That is the manufacturer’s explanation of the project strategy; the case study does not give an independently verified comparison showing an exact U-value improvement against another system.
Thermal bridging is heat transfer through a more conductive part of a building assembly that interrupts or bypasses insulation. Façade consoles and their connections are therefore relevant inputs to the thermal design. A thermal separator and the choice of console material can affect how heat passes through those connections, but their contribution must be assessed as part of the wall assembly. The reported U-value for District Lofts is a design outcome for its stated configuration, not a stand-alone rating for a console.
The visible finish can remain the architectural focus because the support components are behind it. At District Lofts, the rainscreen uses two types of Swisspearl fibre-cement cladding. EJOT says the same subframe system accommodated both secret-fix and face-fixed cladding. These fixing approaches describe how cladding is attached; they do not change the fact that the CROSSFIX assembly sits behind the visible panels.
Ventilation is another design condition. The project account says the cavity was deep enough to preserve ventilation alongside 250 mm of insulation. That does not establish a standard cavity depth or insulation thickness for other buildings. Designers must determine dimensions and detailing for the intended cladding, wall, moisture strategy and project requirements.
What did EJOT report for Aire Lofts and District Lofts?
EJOT’s project portrait identifies Aire Lofts and District Lofts as two residential buildings completed in 2025 in Leeds, with 194 apartments in total. Both form part of the wider Climate Innovation District, which the project account describes as containing more than 500 low-energy homes and amenities. That district-wide total should not be attributed to these two buildings alone.
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EJOT says CROSSFIX was used throughout District Lofts after an earlier application at Aire Lofts. For District Lofts, the manufacturer reports a weighted U-value design of 0.13 W/m²K based on a typical subframe arrangement, 250 mm of insulation and a cavity deep enough to preserve ventilation. A lower U-value indicates less heat transfer through the element being rated, but the reported figure should be read in the context of that wall design and its stated basis.
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The reported District Lofts arrangement included a 220 mm A2 stainless-steel K1 console, a Powerkey, L, Z and T profiles, and five kinds of stainless-steel fasteners. EJOT also says the system did not need handed brackets in constrained areas around openings. These details describe how the project addressed its particular façade and installation conditions; they do not establish that every CROSSFIX project uses those components or avoids project-specific bracket design.
The manufacturer’s Aire Lofts and District Lofts case study is the source for these project claims. It is useful as a documented example of a configuration, but it is not an independent head-to-head evaluation of façade substructures. It does not supply a competing product comparison, a controlled thermal test, or an installed-cost comparison. Accordingly, it supports a case-specific account—not a claim that CROSSFIX is universally more efficient, less expensive or safer than alternatives.
What design flexibility does the system offer?
EJOT’s system information describes horizontal and vertical support profiles and fixed- and sliding-point arrangements. In principle, those are ways of organizing profile support and accommodating façade design needs; the appropriate layout depends on structural calculations, cladding requirements and the project’s details. EJOT’s CROSSFIX system overview is a manufacturer source for system-level descriptions, not a substitute for project engineering.
The EPD gives console protrusions from 40 mm to 400 mm and states that the design can compensate for wall tolerances up to 400 mm. Those ranges should not be treated as permission to use any dimension in any assembly. A designer needs to confirm the selected console, loading, substrate, anchor design, projection and applicable assessment documents for the actual project. EJOT’s downloads index lists technical sheets and CAD drawings as well as assessments and certificates, which can help identify current documentation for a specification.
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The project account’s note about openings is also best read narrowly: EJOT says handed brackets were not needed in constrained areas around openings at District Lofts. That may be relevant where façade layouts have tight conditions, but the source does not establish a universal opening detail. The design still needs to coordinate cladding joints, support locations, anchors and the wall construction.
What does the CROSSFIX EPD say about environmental impact?
An EPD reports environmental impacts for a defined product or system configuration and life-cycle scope. EJOT’s current CROSSFIX EPD was issued on 28 May 2025, is valid through 27 May 2030 and uses a 2023 data base. It follows EN 15804+A2 and is an externally verified declaration under ISO 14025. These credentials describe the declaration’s framework and verification; they do not mean that the product is automatically lower-carbon than another system.
The representative declared unit is 1 m² of CROSSFIX with a 240 mm console and one layer of aluminium profiles, with a declared mass of 2.74 kg/m². The EPD includes other configurations in its annex and reports that their GWP-total results vary from 16% lower to 68% higher than the representative product. That range is a warning against applying the representative result to every CROSSFIX assembly without checking its configuration.
| EPD module | Reported result per declared unit | What it covers |
|---|---|---|
| A1–A3 | 16.2 kg CO₂-eq | Product stages |
| A4 | 0.0221 kg CO₂-eq | Transport to site |
| A5 | 0.185 kg CO₂-eq | Installation stage |
| D | −11.6 kg CO₂-eq | Benefits and loads beyond the system boundary |
Figures are from EJOT’s 2025 EPD for its representative 1 m² declared unit; they are separate life-cycle modules, not a single whole-building footprint.
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The EPD models end-of-life scenarios rather than guaranteeing what will happen at demolition. For the declared unit, it assumes 2.546 kg of recycled metals, 0.057 kg of plastic going to energy recovery, and 0.137 kg as landfill collection loss. These are scenario flows used in the declaration, not assurances that a future demolition site will recover those exact quantities or routes.
The declaration assumes a reference service life exceeding 50 years based on BNB values and says a life above 70 years can be assumed if the system is used correctly. This is an EPD assumption, not a product warranty or a prediction for every installation. Actual service life depends on the assembly, exposure, maintenance and conditions of use.
The declaration’s own comparison note says EPD comparisons are meaningful only when datasets use EN 15804 and the building context and product-specific performance are considered. A fair comparison therefore uses compatible units, life-cycle modules and assemblies that meet the same design requirements. The 2025 CROSSFIX EPD provides the scope and configuration details needed to interpret these numbers.
What should a project team verify before specifying it?
Use the Leeds project as evidence that a rainscreen design can combine substantial insulation, a ventilated cavity and a concealed support assembly in a completed residential project. Do not use it as a shortcut around project calculations or approvals. A specification should connect the chosen substructure to the actual wall, cladding, loads and local requirements.
- Thermal design: Ask for the thermal-bridge contribution and the calculated whole-wall U-value for the proposed assembly. Confirm that the insulation thickness, console spacing, profiles and cavity assumptions match the design being priced and built.
- Structure and anchors: Verify substrate conditions, loads, anchor selection and structural capacity. Console projection and adjustment range matter only when supported by design documents for the proposed wall and loads.
- Cladding compatibility: Confirm the selected cladding system, panel fixing approach, profile orientation and fixed/sliding-point design. Check details at openings, corners and transitions rather than assuming that a case-study solution transfers unchanged.
- Ventilation and detailing: Confirm that the cavity and its openings remain consistent with the project’s façade and moisture strategy after insulation, support profiles and other details are coordinated.
- Fire documentation: Review evidence for the complete façade assembly and the applicable jurisdiction. Do not treat a material classification for one component as a fire-resistance rating for a finished wall.
- Environmental comparison: Compare EPDs with compatible standards, declared units, product configurations and life-cycle modules. Include project quantities and context rather than comparing isolated headline figures.
- Delivery and cost: Request project-specific installed pricing, local availability, lead times and installation sequencing. The Leeds account gives no price or controlled cost comparison, so those points must be established for the project.
EJOT’s CROSSFIX downloads page lists ETA-21/0756, ETA-24/0547, declarations of performance, Passive House certificates, the EPD, LEED v4 material and technical sheets/CAD drawings. A listed document is a starting point for due diligence, not proof that a specific façade configuration complies. Check the exact assessment, scope, configuration, geography and current revision with the project’s design and approval team.
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How should the fire information be interpreted?
EJOT says the project team had to balance the façade’s EWS1 fire safety rating with thermal and ventilation goals. That is a project account, not a general approval statement for other façades. The EPD identifies material fire behaviour as A1 but lists fire resistance as NPD, meaning no performance determined.
A1 material behaviour must not be translated into a claim that the completed façade assembly has a particular fire resistance. A finished assembly includes more than one material and its performance depends on the designed system and applicable local requirements. Project teams should obtain and assess the documentation that applies to the entire proposed assembly, and confirm that it fits the relevant approval route.
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No. It is a useful manufacturer-reported example of one system applied to two residential buildings, with specific insulation, cavity, cladding and subframe details. It does not establish superiority across projects, climates, substrates, façade designs or budgets.
For a specification comparison, request equivalent information for each option: thermal-bridge contribution and whole-wall U-value; structural capacity and substrate anchors; adjustment range and façade geometry; compatibility with the selected cladding and fixing design; fire documentation for the complete assembly; installation constraints; EPD scope and modules; and installed cost and local supply. Keep the wall build-up and performance requirements consistent. Without that matched context, a single case-study result or one EPD figure cannot settle the choice.
Frequently Asked Questions
What is the difference between rainscreen cladding and a façade substructure?
Rainscreen cladding is the visible outer finish; a substructure is the support assembly that connects it to the wall. A product described as a substructure should not be mistaken for the cladding panels or for a complete façade design.
Does the 0.13 W/m²K figure apply to every CROSSFIX project?
No. It is the weighted U-value design reported for District Lofts with that project’s stated wall arrangement. A separate project needs its own calculation based on its materials, geometry, insulation and support layout.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsDoes an A1 classification mean a façade is fire-resistant?
No. A1 describes material fire behaviour in the EPD, while fire resistance for CROSSFIX is listed as NPD. Fire performance claims for a finished façade require evidence for the complete assembly and the applicable project requirements.
Can I compare the EPD’s module D figure directly with another product’s A1–A3 result?
No. They refer to different life-cycle modules and boundaries. Compare equivalent configurations and matching modules under compatible EPD standards, and consider the building context and product performance.
