The short answer
Slowly and sparingly. In a village where few buildings date from after the eighteenth century, the priority is holding on to the original fabric wherever it is still sound. We find the specific fault, repair around it, match what we add to what is there, and record the work with photographs.
A roof in a village like Lacock is a document. Every patch, replaced timber and re-pointed ridge records somebody's decision about how to keep the water out. A good repair reads that document first and adds to it with as little disruption as it can.
Q1.1Where do you start on a centuries-old roof?
We start from the loft. The underside of the roof shows staining from past leaks, the condition of rafters and battens, and whether earlier repairs have been done with sound materials. Daylight through the covering marks where water gets in. From outside we look at the ridge, the chimneys, the valleys and the verges, which is where an old roof usually fails first. The photographs from that survey go with your written quote, so you can see the reasoning behind each recommendation and decide what to do about it.
Q1.2Should an old covering be reused?
Where stones, tiles or slates are sound, they usually go back. Re-hanging them on new battens, with new fixings, keeps the roof's character and its look from the street. Slates that have delaminated or tiles that have crumbled are replaced with matching pieces, chosen by size, colour and texture so they do not stand out. Slate became easier to bring in after the canal was completed in 1810, but it is not the only covering you will find here, so we match what is actually on your roof.
Q1.3Does lime matter on old stacks and ridges?
On old masonry, a soft lime mortar is generally kinder than hard cement, which can trap moisture and damage the stone or brick around it. Our chimney repairs page explains how we repoint and rebuild stacks, and the same thinking applies at ridges and verges.
The site is kept tidy throughout, and it is cleared and the waste taken away at the end.