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Forums >> Revit Building >> Technical Support >> Interior Rendering - White Splotches on Painted Wall Surface

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Wed, Jun 19, 2013 at 1:47:23 AM | Interior Rendering - White Splotches on Painted Wall Surface




Joined: Wed, Oct 10, 2012
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Whenever I produce interior renderings, I always encounter the problem of white light splotches on wall and/or other surfaces. I have searched the internet for solutions to this problem but have been unsuccessful in finding the primary cause in this error. The goal is to simply have a clean well lit and shadowed interior room rendering.

Additionally, when I ran a 'Draft' rendering of the same image, it gave no indication that there would be white splotches as shown in the higher quality rendering. Why does the lower quality Draft rendering show no splotches, while the higher quality one does?

Although I have turned on "Daylight Portals- Windows" in the rendering settings, it does not register as the render processes; the Rendering Progress Bar shows:

Artifical Lights: 4

Daylight Portals: 0 <----?

Notice that even though it does not register the window Daylight Portal, light still passes through the glass on to the floor.


Both the draft rendering, higher quality rendering, and progress bar image are included in the attachments.


Any further recommendations to make this scene more successful would be highly appreciated.


Revit Version: 2013

Computer Specifications: Intel Core i7-2600 CPU @ 3.40 GHz

RAM: 8.00 GB

Operating System: Windows 64-bit Windows 7 Professional


Rendering Time:  02:12:41 (2 hours, 12 minutes, and 41 seconds)

Rendering Settings:

Interior: Sun & Artifical

- Image Precision (Antialiasing) : 6

- Maximum Number of Reflections: 2

-Maximum Number of Refractions: 8

-Blurred Reflections Precision: 5

-Blurred Refractions Precision: 5

-Soft Shadow Precision: 6

-Indirect Illumination Precision : 5

-Indirectin Illumination Smoothness: 6

-Indirect Illumination Bounces : 2


Exosure Control:

Exposure Value : 5

Highlights: .25

Mid Tones: 1

Shadows: 1.5

White Point: 6500

Saturation: 1

Materials Used:

Wall Finish : Flat/Matte Painted Surface

Floor Finish : Semi-Glossy (with very low settings) Vinyl of Beige and Blue colors


Lights Used:

-Natural Sunlight from Window

-3 evenly spaced ceiling mounted lights (From Revit Library): 



Attached Images


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Wed, Jun 19, 2013 at 7:09:01 AM | Interior Rendering - White Splotches on Painted Wall Surface



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Joined: Fri, Nov 12, 2010
1749 Posts
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Did you look at any of the posts below to see if those answers help you?  What are your render settings set to?

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Thu, Jun 20, 2013 at 5:16:41 AM | Interior Rendering - White Splotches on Painted Wall Surface




Joined: Wed, Oct 10, 2012
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Yes, but I have not found any successful solutions.

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Thu, Jun 20, 2013 at 6:33:03 AM | Interior Rendering - White Splotches on Painted Wall Surface




Joined: Sat, Dec 29, 2007
286 Posts
3.5 Stars: 11 Votes

try and remove reflective properties from materials.

or render in higher quality.


"There is no path to peace,

peace is the path."

Mahatma Gandhi.


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