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WoodIntel™Open AI Platform

WI-TWIN v1.0.0 · screening simulation

Digital twin of your facade.

Describe the building once. WoodIntel unrolls the WI-SL service-life model into 50-year decay, mould and surface-checking curves per facade, with the year each one first needs attention.

Facades modelled
In plain terms

On a siberian larch facade in Coastal Scotland, the north elevation is modelled to need its first real intervention around year 5. Your declared maintenance interval of 8 years arrives after that point — consider shortening it, or improving detailing and overhang.

This is a screening simulation, not a hygrothermal (EN 15026 / WUFI) calculation. Use it to plan inspections and compare options, not to sign off building physics.

north facade

moderate · north

5y

First modelled intervention year

11020304050

solid = decay · dashed = mould · dotted = checking

Scheduled visits: y8, y16, y24, y32, y40, y48

  • North facades hold moisture longest — mould/algae risk is modelled first here.

south facade

moderate · south

5y

First modelled intervention year

11020304050

solid = decay · dashed = mould · dotted = checking

Scheduled visits: y8, y16, y24, y32, y40, y48

  • South facades carry the highest UV load — surface checking is modelled first here.

east facade

moderate · east-west

5y

First modelled intervention year

11020304050

solid = decay · dashed = mould · dotted = checking

Scheduled visits: y8, y16, y24, y32, y40, y48

west facade

moderate · east-west

5y

First modelled intervention year

11020304050

solid = decay · dashed = mould · dotted = checking

Scheduled visits: y8, y16, y24, y32, y40, y48

Method, disclosure and limitationsFull method detail

WI-TWIN is a screening simulation built on the WI-SL factor-method equations. It is not a hygrothermal (heat, air and moisture transport) calculation to EN 15026 / WUFI, and must not be used as a substitute for one in a real building-physics assessment.

Base method

WI-TWIN v1.0.0 (released 2026-08-01), built on WI-SL v1.2.0 — see /method for the underlying equations.

Limitations

  • Yearly risk curves are derived from a single-point WI-SL service-life estimate via a declared logistic hazard-accumulation heuristic. They are not the output of a time-stepped moisture-content or decay model.
  • Exposure classification (sheltered/moderate/fully-exposed) from storeys, overhang and ground clearance is a WoodIntel screening rule, not a wind- or driving-rain-index calculation for the specific building.
  • Detailing quality is a single three-point scale; it does not capture assembly-specific junctions, penetrations or workmanship variance.
  • Facade orientation is reduced to WI-SL's four buckets (north / south / east-west / horizontal) — east and west facades receive identical loads, which understates any real asymmetry from prevailing wind or sun path.
  • The maintenance schedule shown is the user-declared interval, not a model-optimised one; compare it against the WI-SL modelled maintenance interval reported per facade.
  • Inherits every WI-SL and WI-CAL limitation unchanged (see /method) — including that resistance profiles are ordinal, not measured, and that climate inputs are zone-level.