The building, and what it does to the job
In this corner of the borough, the inter-war semi is the dominant house type. The old top usually tells us what the next one on the street will be hiding. Priced on the units we find, not the ones on the drawing.
Conservatory-style rear extensions here have low cill heights, so check the window board clash before you set an upstand height you cannot achieve.
A window board sitting below finished worktop height leaves two choices, drop the top under it or notch the stone around it, and both cost more than a straight run. Where the strip-out and the template happen on the same visit it gets measured properly, with the old top already off. Found at template, not on fit day.
