UPDATE: After more investigation, I was advised that this uses a central boiler for a hot water baseboard heater and it is safe to keep the curtains or sheers at least 1/2" to 1" above the top of the baseboards.
UPDATE: After more investigation, I was advised that this uses a central boiler for a hot water baseboard heater and it is safe to keep the curtains or sheers at least 1/2" to 1" above the top of the baseboards.
I’ve seen recommendations anywhere from 4" to 12".
But at the very absolute minimum, they should never be able to touch.