Which roofing installation method enhances the visual appearance by adding extra thickness to certain shingle courses?

The method that enhances visual appearance by adding extra thickness to certain shingle courses is ribbon coursing. This technique involves layering shingles or creating a pattern that increases the dimensionality of the roof surface. The result is a more textured and visually appealing roofing system, as the additional thickness and arrangement create shadows and depth that can enhance the overall aesthetic of the home.

Ribbon coursing is often used in residential roofing to achieve a more pronounced and attractive design compared to standard shingle installation. By carefully selecting which layers to thicken and how to arrange them, roofers can create unique patterns that draw the eye and complement the architectural style of the building.

In contrast, re-roofing refers to the process of installing new shingles over existing ones and does not specifically focus on enhancing visual texture. Re-covering is when a layered approach is taken, usually involving an additional layer of roofing material over the old, which may not have the same intentional visual outcome as ribbon coursing. The ridge course is a term referring to the shingles laid along the peak of the roof, which assists in waterproofing but does not specifically enhance the overall visual appearance like ribbon coursing does.