Architectural Flashing Supply
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Historic restoration and conservation · Lesson 3 of 4

Historic restoration and conservation: methods and worked application

The record that starts a conservation job, how a measured profile becomes a shop drawing with hems, a worked fit check against AFS's limits, sample and mock-up approval, the order of intervention, and the principles for installing replacement metal.

You will be able to: Follow a documented conservation sequence from the measured record to the approved shop drawing, check a measured profile against what AFS can form, plan a sample and mock-up for approval, and apply the order of intervention and installation principles.

13 min · 12 slides · 10 questions

All lessons in this module
Slide 1 of 12

Start with the record

A historic structure report gives documentary, graphic and physical information about a property's history and existing condition.

Brief 43 says the report makes the case for the chosen treatment before any work begins.

It records the findings of research and investigation, and the processes of physical work, for future researchers.

Sources

Glossary

Historic structure report
A report giving documentary, graphic and physical information about a property's history and existing condition and arguing for the most appropriate treatment before work begins.
Mock-up
An on-site sample of the proposed material used to judge whether it is an adequate visual match to the historic one.
Open hem
A hem folded back on itself with a gap between the layers, rounded at the fold; AFS's FlashDraft starts a new one at a 1/8 in gap.
Smashed hem
A hem folded back tight against the sheet, closed to a very small gap; FlashDraft starts a new one at 1/32 in.
Mold line
The sharp-corner line of a profile where two legs would meet, to which AFS counts girth.