In sheet metal roofing, coping refers to a protective cap or covering installed along the top edge of walls, parapets, or other exposed surfaces to prevent water infiltration. This is particularly important for flat or low-slope roofs where walls and roof edges are vulnerable to water penetration.
Key points about coping in sheet metal roofing:
- Waterproofing: Coping seals the top edges of walls, keeping rainwater from seeping into joints or behind wall cladding. This prevents water damage and extends the life of the roofing system and the building structure.
- Aesthetic Appeal: Coping can also be a design feature, offering a clean, finished look that complements the roof and wall materials.
- Material Choice: It’s typically made from durable materials like aluminum, stainless steel, or copper to withstand environmental exposure.
- Thermal Expansion: Many coping systems include expansion joints, allowing them to flex with temperature changes without cracking or breaking.
In summary, coping is essential in roofing to both protect and enhance the durability and appearance of the structure’s edge areas.