Are there any technical documents/case studies on the effectiveness of reflective insulation below snowmelt? Specifically, snowmelt tubing installed in a sand bed below pavers with reflective insulation below the sand bed.
Answer:
I am not aware of any documentation, however, I would suggest that because there is no air spaces facing the reflective insulation surfaces, there would be no thermal benefit of a reflective insulation — if it can’t reflect, it can’t stop heat transfer, and it can only reflect heat in the presence of an air space.