A ten-step method
A documented restoration packet follows ten steps, in this order.
- Confirm the designation and review body
- Document before touching
- Identify each metal
- Find the water
- Choose the least intervention
- Plan for lead and fire
- Detail separation, fasteners, expansion, drainage
- Approve shop drawings, samples and a mock-up
- Fabricate and install
- Record the work and set the inspection routine
A vertical list of ten numbered steps from designation and review through documenting, identifying metals, finding the water, least intervention, lead and fire planning, detailing, drawings and mock-up, fabricate and install in red, and record and inspect.
- 1
- Confirm the designation and review body
- 2
- Document before touching
- 3
- Identify each metal
- 4
- Find the water
- 5
- Choose the least intervention
- 6
- Plan for lead and fire
- 7
- Detail separation, fasteners, expansion, drainage
- 8
- Approve shop drawings, samples and a mock-up
- 9
- Fabricate and install
- 10
- Record the work and set the inspection routine
Sources
- The Secretary of the Interior's Standards for the Treatment of Historic Properties with Guidelines, 2017 (Part 1: Preservation and Rehabilitation; Metals and Roofs sections, Preservation treatment) - U.S. National Park Service, Technical Preservation Services
- Preservation Brief 4: Roofing for Historic Buildings (Sweetser, 1978; a dated brief) - U.S. National Park Service, Technical Preservation Services
- Preservation Brief 16: The Use of Substitute Materials on Historic Building Exteriors (revised October 2023) - U.S. National Park Service, Technical Preservation Services