Ashton House was given its stone face in 1724. Other houses followed the fashion, and the Manor House of 1647 pairs brick with a limestone ashlar front. The result is a building that looks of one date from the street and is made of several behind it.
Q2.1Where do water leaks start on these houses?
At the join. Where a later front meets an older roof, there is often a gutter set into the wall-head, a flashing dressed into stone, or a valley behind a parapet. Each of these is lead or other sheet-metal work that has aged separately from the stone around it, which is why the stone can look perfect while the junction beside it is failing. Lead flashings stiffen, crack and lift, and water then runs behind the stone where nobody can see it.
Q2.2Is lead worth renewing, or can it be patched?
It depends on how much has failed. A small split can be repaired with a patch, but lead that has crept and split along its length is better renewed as one whole run. The weight of the sheet, called its code, is chosen for the position, and lead correctly fitted can last many decades. Our page on lead roofing explains the codes and the work.
Scaffolding matters here, as the roofs sit high above narrow village frontages. Before accepting any price, confirm that it allows for scaffolding and VAT.
Where a gutter sits in the wall-head, it is lined with lead or a similar sheet metal, and the lining runs back under the first course of the covering. If its fall has gone, water ponds and finds the weakest seam. Renewing the lining with a proper fall, and tidying the outlet, cures more ceiling stains than any amount of sealant.
We do not rely on sealant at these junctions. A bead of mastic may hold for a season, but it hides the fault from the next person who looks, and the timbers behind it stay wet. We leave the plot clear of debris, with our rubbish carted off.