EN ISO 10211 & ISO 6946 Finite Element Analysis
Assessment profiles for SAP 10.2, SAP 10.3 and Custom

Precision Thermal & Moisture Physics for Modern Building Envelopes

Calculate ψ-values, 2D temperature fields, and Glaser condensation risks directly from your CAD geometry. Powered by finite element analysis, transparent AI material sourcing, and AI-assisted optimisation.

Free U-Value & Glaser Calculatorψ-Value Calculator

Your first ψ-value calculation is free.

EN ISO 102112D Finite Element
ISO 6946U-Value Calculation
ISO 13788Glaser Hygrothermal
E2 Residential Lintel Detail · SAP 10.3 Assessment Profile
ψ0.041 W/(m·K)
fRsi0.812 ✓ Risk Free
Heat Loss Across Junction-95.9% vs SAP Default

Psiclops 2D FEA resolves exact heat flux vectors for this junction, reducing the ψ-value from 1.000 to 0.041 W/(m·K), 95.9% lower than the assessment default.

Physics-First Engineering Platform

Standards-Based Hygrothermal
Building Physics

Psiclops combines standards-based thermal and moisture analysis in a single workflow. Model the construction you actually designed and get traceable U-values, thermal bridging, interstitial condensation and annual moisture behaviour in a single standards-based report.

Thermal Bridging (ψ-Value)

Full 2D steady-state finite element analysis of real construction geometry, calculating temperature distributions and linear thermal transmittance (ψ) in accordance with EN ISO 10211.

  • Automatic internal/external boundary length determination
  • fRsi surface temperature factor and mould risk assessment
  • ISO 13370 B′ ground-floor calculation
  • Standards-based assessment profiles

Multi-Layer & Bridged U-Values

Calculate U-values for multi-layer and repeating bridged constructions using the appropriate standards-based method, with 2D finite element analysis for non-uniform geometry.

  • ISO 6946 upper and lower resistance limits
  • Repeating thermal bridges including timber studs, joists and battens
  • Complex thermal paths, for example perforated steel and I-joists
  • Model components or reusable assemblies for inclusion in any build-up or 2D model

Hygrothermal & Glaser Analysis

ISO 13788 Glaser analysis from a single design month to a full 12-month moisture cycle, including 2D vapour field resolution for complex geometries.

  • Locates condensation planes within thick layers using ISO 13788 subdivision
  • Tracks monthly condensation, moisture accumulation and drying over a full year
  • Resolves vapour-pressure fields across the actual 2D construction geometry
  • Calculates condensation and evaporation rates at material interfaces

Engineering Workflow

From DXF Drawing to Deliverable Report in Four Steps

Upload your DXF CAD detail, assign materials and boundary conditions, solve the construction automatically against the relevant assessment profile and generate a traceable, AI-narrated engineering report. No searching for material specifications, no mesh scripting, no manual grid building, no report writing.

STEP 01 // DXF IMPORTGeometry Parsed
Lintel_E1_Steel.dxf14 layers · 18 polygons
Masonry-Outer3 polygons
Steel-Lintel2 polygons
Insulation1 polygon
+11 further layers12 polygons
Closed polygons identified as solver regions

See the workflow in action — all worked examples.

AI as an Engineering Assistant

AI Assisted Thermal & Condensation Optimisation

Most software merely calculates the problem. Psiclops helps you solve it. Once a model is solved, our AI optimisation engine evaluates the thermal and hygrothermal mechanics to suggest actionable engineering refinements.

Thermal and Condensation Improvements

Assesses condensation risk and mould vulnerability against fRsi thresholds and recommends material changes to improve both thermal and hygrothermal performance.

Continuous Envelope Tuning

Explores heat flow and moisture paths through the geometry and suggests changes to overall performance within the existing construction.

Material Provenance

Every material suggestion carries a provenance label and confidence score — sourced from ISO 10456, manufacturer datasheets or published standards.

PSICLOPS ASSIST
Model: Eaves
INTERSTITIAL MOISTURE WARNINGGlaser Plane @ Layer 3

Condensation risk detected between OSB Sheathing and PIR Insulation in Month 1 (Jan). Vapour pressure exceeds saturation pressure by 142 Pa.

AI Recommendation: Relocate VCL to warm side of stud insulation (μ = 100,000).
THERMAL PERFORMANCE OPTIMISATION

Replacing mineral wool cavity infill with low-λ phenolic board (λ = 0.018 W/m·K) reduces linear thermal transmittance from ψ = 0.065 to 0.041.

Proposed changes (1)
3 · Mineral Wool Cavity Infill → Kingspan Kooltherm K106
Ask a question about this junction...

Mathematical Rigour

Traceable, Verifiable Calculations

In building physics, trust requires total visibility into calculations, inputs, and assumptions. Psiclops is engineered to be fully auditable by energy assessors, structural engineers, and compliance officers.

01 // FEA Solver

Deterministic Physics Engine

Validated against EN ISO 10211 reference test cases with results converging to less than 0.1% under mesh refinement.

02 // Provenance

Transparent AI Sourcing

Every material used cites its source and carries a provenance label wherever it is referenced.

03 // Assessment Rules

Automated Rule Checks

Flanking element lengths, party-wall halving logic, and cut-off plane distances strictly enforced per conventions.

04 // Complete Export

Audit-Ready Technical Reports

Shows the original construction alongside isotherm plot images, node temperatures, and self-sign or architect signatures.

The Psiclops Auditability Matrix

Verification LayerConventional workflowPsiclops FEA Platform
EN ISO 10211 Test CasesTypically validated manually or not documented✓ Automated test suite executed on every build
Material Conductivity ProvenanceUser-entered values, source not recorded✓ Provenance label and confidence score on every material
Assessment Convention EnforcementUser responsible for cut-off lengths and geometry rules✓ Automated geometry checks and warning flags
EN ISO 13788 Hygrothermal AnalysisSeparate spreadsheet or manual calculation✓ Integrated month-by-month condensation and drying analysis

Fair & Transparent Model

Pay only for the calculations you run.

No subscription required. Free where it should be free, fair where it costs.

ALWAYS FREE

U-Value & Glaser

Layer-by-layer assemblies, ISO 6946 U-value calculations, and condensation risk checks. No account needed.

Free
  • ISO 6946 combined method, including bridged constructions
  • EN ISO 13788 Glaser condensation check
  • AI material lookup included
  • DOCX report with a free account
Most Popular
FIRST CALCULATION FREE

ψ-value calculation

Full 2D finite element thermal bridging analysis for linear junctions from DXF files.

£10 / junction
  • EN ISO 10211 2D FEA mesh solver
  • fRsi surface temperature factor
  • Isotherm and hygrothermal plots
  • Assessment convention checks
INDEPENDENT REVIEW

Architect verification

Submit your completed reports for independent review by a qualified architect. Geometry, materials, boundary conditions and moisture analysis are checked against the submitted DXF and signed off.

£50
  • DXF geometry and construction details
  • Material conductivities and provenance
  • Boundary conditions and surface resistances
  • Moisture control and condensation risk

Junction cost estimator

Estimate the cost for your project. Your first junction is always free. Credits never expire — bundles save up to 30%.

Starter bundle (5 credits)£45 — £9/credit
House bundle (12 credits)£96 — £8/credit
Practice bundle (30 credits)£210 — £7/credit
Junctions required:1 junction
Estimated cost£0
Per junctionFree
Your first junction is always free.

Start calculating. Your first junction is free.

Test your first junction today. Calculate a U-value, check condensation risks, or run a full EN ISO 10211 ψ-value calculation with your first free credit.