01
Investigate the heat source
Air leakage, insufficient insulation, warm ducts and uneven ventilation can warm the upper roof. Map snow-melt patterns and inspect the attic rather than focusing only on the eave.
02
Protect vulnerable transitions
Eaves, valleys, low-slope connections and built-in gutters may need specific membrane and flashing treatment. Secondary protection supports the system but does not replace correct slate lap.
03
Avoid damaging ice removal
Chopping, prying and walking icy slate can break roofing and create safety hazards. Use qualified professionals and address the building cause after the emergency.