Creation Problems

So I’m new to the Unreal Engine, I know about collision and other basics but this has been annoying me for days. I want to create a house but the shades are different for the window. It’s the same texture just have a look and if you can help please do. Thanks! ue4.PNG

What do you mean the shaders are different? Can you please explain more.

Well as you can see from the picture, its a different shade of white compared to other ‘blocks.’ So One looks whiter than others

If those blocks are made with static meshes then you shouldn’t be assembling the building that way, you will need to instead model it properly in a 3D software like Blender and export to UE4. It has an impact to performance to construct things like simple walls out of multiple objects and it creates lighting issues since each object will get processed separately when rendering lighting.