My suggestion for a case like this is to use the legacy microclimate maps until we eventually release LBT 1.4. The microclimate maps in LBT 1.3 don’t do a full longwave MRT calculation with surface view factors and so they won’t account for material choices like that. The microclimate maps in LBT 1.3 are really only suitable for indoor thermal comfort analysis and they won’t be suitable for the outdoors until LBT 1.4.