So I just had a thought when looking into both Mistborn and Stormlight Archive. It appears that the raw power of shards is unable to enter buildings for some reason. I'm not sure if it's been discussed before but i'm sure people have noticed how in Mistborn the physical representation of Preservations power, in the form of the Mists, cannot enter buildings and evaporates at the entrance. A similar aspect to this can be seen in the Stormlight archive with, as far as we can tell, the physical representation of Honors power, Stormlight, cannot enter into things perceived as buildings.
We see examples of Stormlight passing through Flesh to infuse gems in the form of Kaladins hand when he is left to die in a Highstorm and also in the fact that they are left in lanterns out in a Highstorm to become infused. It also seems weird how Stormlight can pass through the glass to get into a gem inside a Sphere anyways.
But from these examples, does it seem to indicate that a shards power can't permeate buildings?
And to be clear, i'm not saying that powers granted by a shards investiture cant be used in buildings, as there is much evidence that it can and is used inside a lot in both Mistborn and SA, but what sort of meaning does the possibility that a shards essence cannot permeate buildings?