Naviate Daylight

Naviate Daylight

Automate daylight area ratio checking of your BIM model for optimising design decisions on indoor lighting, windows and other elements for better work and living areas.

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Network license

Network license can be installed on any number of computers, but is only available for one user at a time. One year subscription.

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€1,080.00 / year

Included in the agreement

  • Response time: 4 hours
  • Online access to Symetri case login system
  • Invite to Symetri annual user conference
  • Log cases via email
  • Phone helpdesk support
  • Remote interactive support via GoToMeeting and TeamViewer
  • Access to Symetri e-Learning

From January 1st 2021 Naviate Silver will be renamed to Naviate Standard. For details please read more here.



All prices display ex. VAT

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Save time...

Reports in local language and instant colouring of your BIM Model according to local requirements.

Increase control of your data...

Direct connection to local rulesets for daylight ratio; ensuring that you always are up to date with existing regulations.

Optimise workflows...

Naviate Daylight works directly on your design model and updates when you update your design.

Customised for architects

Naviate Daylight automates daylight requirements checking (simplified method) based on Norwegian, Swedish, Danish, Dutch and other local standards. Set the required minimum Windows-to-Floor Area Ratio of each room and Naviate Daylight automatically checks whether the room meets your given requirements. Naviate Daylight gives a quick overview how much daylight each room has, given by the glass areas in all curtain walls and windows from each room. The floor area of all defined rooms in the model, in order to define floor areas needed to calculate daylight area rate, and in order to get the room bounded surrounding walls, windows, and panes.

  • Norwegian regulations: Byggteknisk forskrift § 13-7. Lys
  • Swedish regulations: Boverkets byggregler § 6.322 Dagsljus (SS 914201)
  • Danish regulations: Bygningsreglementet § 379 Dagslys
  • Finnish regulations: Ympäristöministeriön asetus asuin-, majoitus- ja työtiloista 5 § Asuin-, majoitus- ja työtilan ikkuna
  • Dutch regulations: BRISbouwbesluit § 3.11 Daglicht (NEN 2057)
  • Worldwide green building certification program from U.S. Green Building Council (USGBC) LEED 2009 EQc 8.1
  • European Committee for Standardisation (CEN/TC) 169 EN 17037:2018 Daylight in buildings
  • Worldwide sustainability assessment method BREEAM Natural light

Naviate Daylight:

  • Scans the BIM model and reports daylight ratio compliance against required minimums
  • Accepts input of required minimum daylight area ratio per room area
  • Uses floor areas of rooms and glass areas of windows, doors, and curtain walls.
  • Synchronises with Revit units of measurement.
  • Automatically adds and saves the daylight area ratio values per room in the Autodesk Revit model.
  • Displays your daylight ratio results
  • Creates a Daylight Performance Indicator in the Building Performance Dashboard.

Naviate Daylight brings Revit to a new higher performance level by providing automated daylight checking and decision support for your integrated BIM design.

How to get started with Naviate Daylight


Things to consider before running Naviate Daylight

1. Required Revit Elements and Window settings

1.1. Rooms, spaces, or areas

The function uses the floor area of all defined rooms, spaces, or areas in the model. Without rooms, spaces or areas the tool cannot define floor areas needed to calculate daylight area ratio, and the tool cannot get the room bounded surrounding walls, windows, and panels. 

1.2. Glass material in Windows, Doors, Curtain Walls

To get a daylight area of a room, surrounded windows and/or curtain walls need to have glass material. The Daylight tool looks for materials with a name containing “glass” or “glazing” or any other material name that you have set in the settings menu. The area of panels containing this material will be included in the daylight area.

1.3. Check if Environmental variables are set in Windows settings

Some PCs are not allowing Naviate Daylight to set these variables due to security reasons. In that case, if the following error pops-up, IT support should check if these variables are set in Windows:

For 2019:

  • C:\Program Files\Symetri\Naviate\Revit 2019\Dll\AcceleradExe\lib
  • C:\Program Files\Symetri\Naviate\Revit 2019\Dll\RadianceExe\lib

For 2020:

  • C:\Program Files\Symetri\Naviate\Revit 2020\Dll\AcceleradExe\lib
  • C:\Program Files\Symetri\Naviate\Revit 2020\Dll\RadianceExe\lib

2. Required Revit Model set-up

2.1. Naviate Daylight is not able to analyse complex geometries (i.e. Plumbing Fixtures, Speciality Equipment)

Current Naviate Daylight version is not managing complex geometries as expected, Plumbing elements are causing Daylight to fail, I believe it is due to the number of triangulations that are needed to convert the geometry of the plumbing fixtures in Radiance, it seems Radiance has a limit for those.

Suggestion: Remove elements with complex geometries (in most cases Plumbing Fixtures consist of complex shapes.

2.2. Toposurfaces won’t be taken into account when calculating Daylight values

Current Naviate Daylight version does not support reading the toposurface geometry when analysing the Revit model

2.3. In a work-shared environment Naviate Daylight parameters won’t be saved to elements which belong to other users

Naviate Daylight does not support sending Editing requests to other users when trying to edit their elements.

Suggestion: Create a local copy of the project when you want to run daylight simulations.

2.4. When saving parameters to elements in Groups, Naviate Daylight will un-group them all and re-group them.

During this process the Revit ID of the model group will be changed, which will result in creation of one group per element in the initial group.

Suggestion: Un-group all elements

 2.4. Walls (Curtain Walls) and elements hosted on them that are slanted outwards will not be recognised by Daylight

Due to Revits' inability to bound the Room geometry to the slanted Walls Naviate Daylight will not recognise elements on slanted Walls and slanted Curtain Walls.

 2.5. Add room elements on balconies, consider naming the balcony rooms the same as specified in the Settings

This enables the tool to recognise balcony/overhang areas and include them in the calculations as proposed by the calculation standard.


2.4. Check if the correct Glass transparency is set on the Window and Curtain Wall elements

Naviate Daylight uses the Material properties and assets found in the Material Browser. For some standards it allows using the Family Type glass transparency parameter of the Window elements. Material assets need to be named as specified in the Naviate Daylight settings.

Things to consider after running Naviate Daylight

Saving Naviate Daylight shared parameters

The following parameters will be set in the Revit project when clicking save (or save and close). These values can be accessed by the element properties in Revit, and by the Revit schedules.


  • Glass Area - The calculated net glass area of the room [read-only]
  • Required Window-to-Floor Ratio - The demanded ratio between the floor area and glazing area in the building envelope of a room [editable]
  • Window-to-Floor Ratio - The ratio between the floor area and glazing area in the building envelope of a room. Daylight Area Rate [%] = Glazing Area / Floor Area * 100% [read-only]

Windows /Curtain Walls/Doors [all read-only]:

  • Gross Glass Area - The area of all glazing panels in the window element
  • Panels - The number of glazing panels found in the window element
  • Glazing Bead Area - The glazing bead area underneath the mullion or the window frame
  • Shading Reduction Glass Area - The area of the glazing reduced by shading
  • Area Lower Glazing - The glass area below a defined height above floor
  • Spandrel Panel Area - The opaque glass area in front of spandrel panels
  • Net Glass Area - The glass area excluding spandrel panels, frames and mullions, shading, transparency ratios etc
  • Shading Factor - The area of the glazing reduced by shading 
  • Transparency Factor - The average transparency factor of the glass panels
  • Transparency Reduction Glass Area - The glass area to be reduced as a result of the transparency factor of the glass panels


For more detailed information please visit our help pages. Detailed information about how Naviate Daylight works are provided to you.

Download a free trial of Naviate

The trial will work for 30 days with access to all features that you can find in the commercial version. After you have submitted the form you will receive an email with links to the available trial versions. If you have any comments or questions, please, contact us.

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