Revit allows you to apply materials to your models quick and easily using the ‘Paint Tool’. This tool applies a material to the selected face of the element or family. Object within Revit that can be painted include walls, roofs, massing, families and floors. Basically if an element highlights when you place your cursor near it, you can paint it.
With your document open click on the Manage tab and select the ‘Materials’ tool. The material browser will appear and contain a list of materials that come with Revit. Find a material that has similar attributes to the texture you are planning on using, for example a concrete materials attributes would match a paving texture. Once you have selected an appropriate base material right click and select ‘Duplicate’. This will create a copy of the material and ask you to insert a new name for the material.
With the material selected, click on the ‘Appearance tab in the right panel. You will see an input named ‘Image’, click the image and the Texture editor will appear. Within the texture editor click the image file name next to the ‘Source’ label. Select your image from the file browser and click open. You have now created a new material that can be utilized throughout your model.
Click the Modify tab, go to the Geometry Panel and select ‘Paint’. The Material Browser dialog will appear allowing you to select the material you created. Once you have selected your material hover over objects in your scene. You will notice the cursor has changed to the Paint symbol. Once your object is highlighted click down on the object. You will notice the object now has the new material applied. To change the material, repeat the steps above and select an alternative material.