Re: Wall patterns applying to both sides of exterior wall

@AlexHorton95  This ususlly happens for me when the  'room' of the house is not fully closed/enclosed. Try using the 'room' tool in Build/Buy mode and draw the room once again. Also look at your build from every corner, for any irregularity.

If you want you can also upload the build, and I, and perhaps others, can take a look