The short answer
Care first, and a light hand. Old roofs in Abingdon's centre have usually been mended many times, so we read the existing work before touching it, repair the part that has failed, keep sound material, and match anything new to what is already there.
The centre of Abingdon was built up over many centuries, and its roofs show it. The abbey was dissolved in 1538, County Hall went up in the late seventeenth century, and the Guildhall and St Helen's carry work from much earlier. A roof in streets like these has usually been mended, relined and partly re-covered more than once, so the first job is reading what is already there.
Q1.1Why is lead used so much on old roofs?
Lead can be dressed into awkward shapes, which is why it turns up in valleys, parapet gutters, hips and the flashings around chimneys and walls. A valley forms wherever two slopes run together, and lead carries the water down that joint instead of through the ceiling. It fails in predictable ways: splits at the folds, cracks where it was folded too sharply, and lifted edges where the fixings have given way. A split in one section often means a patch or a relined length rather than a new roof, and our lead roofing page explains how a lead code is chosen for the job.
Q1.2What do you check before touching a historic roof?
We look at the structure first. Rafters, purlins and wall plates that have moved over centuries tell you whether the problem is the covering or what holds it up. We photograph every slope, then repair the failed part and keep the sound material around it. Where new slates, tiles or stone are needed, they are chosen to suit the existing roof in size, thickness and tone so the repair settles in. Our roof repairs page covers the way a repair is planned.
Q1.3Does a church or listed building follow different rules?
Yes. Where a church is in Church of England use, the faculty system applies and listed building consent is not the route. Other listed buildings need consent for alterations that change their character, and a different roofing material counts. We explain which route applies before any work is priced, and the council's conservation team has the final say on what counts as a change of character.