I have build a basic house but I would like to use different textures for the roof and walls. Here is what I have now.
The brick texture is on the roof when i want it to be a different texture
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The simplest way if the texture isn't UV-mapped, is to assign each face to separate materials in Edit mode:
then assign appropriate texture to each material, as needed. Otherwise if the texture uses UV map, just separate the UV maps for both sections of the object:
then paint each sections with the appropriate color (the roof is the top section, in this picture).
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1$\begingroup$ How do you "separete the uv maps for both sections"? $\endgroup$ Apr 24 '14 at 20:32
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You can also create a separate UV layer in Object Data > UV maps:
Blender Internal:
Assign a different material to the roof faces, then select the alternate UV map in the material texture settings:
Cycles:
In cycles the alternate UV map can be selected in a node setup with the Attribute node:
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$\begingroup$ Can UV maps also be used in attribute nodes? I was only aware of vertex colors. $\endgroup$– bzalAug 29 '16 at 12:56
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$\begingroup$ @bzal Yes, they can. However a separate "UV map" node has been added since this answer was written. In most cases you'll probably want to use that instead. $\endgroup$– gandalf3 ♦Aug 29 '16 at 17:45