Start with the assembly
Shingle choice matters, but underlayment, fastening, starter, valleys, flashings, and ventilation carry the assembly. The evaluation should connect surface condition to deck, underlayment, flashing, ventilation, drainage, and interior evidence.
Questions for the scope
- What is removed, repaired, reused, or replaced?
- How are deck conditions and allowances handled?
- What underlayment, eave, valley, edge, and flashing details apply?
- How are property, landscaping, and weather openings protected?
- What permits, cleanup, and warranties are included?
Frederick context
Frederick combines steep-roofed downtown rowhouses, brick twins, farmhouses, postwar neighborhoods, and newer subdivisions. Roofing plans work better when they connect the surface to masonry chimneys, copper or metal details, attic ventilation, summer storms, winter freeze-thaw cycles, and the transitions created by additions.