The short answer
Inside the conservation area the traditional covering is steeply pitched stone slate over rubble stone walls, with slender brick chimneys. Across the rest of the village you find Cotswold stone tiles, natural or reconstituted, and some clay. Knowing which you have decides what repair is right.
Down Ampney is a village of one long lane, and most of its older character sits within a short walk of All Saints' Church. The village design guidance spells out what the historic buildings are made of, which makes it a handy starting point for anyone planning roof work.
Q1.1How is a stone slate roof put together?
Stone slates are thin pieces of limestone, hung from battens on wooden pegs. They are laid in diminishing courses: big stones along the eaves, getting smaller as the slope climbs to the ridge. The pitch is steep, and that is part of why these roofs shed water and last. The covering weighs a great deal, so the timbers under it matter as much as the stone. When one starts to let in water, the likely causes are softened battens, failed pegs, and the edges where stone meets a chimney or a wall.
Q1.2What about the tiles on later houses?
Newer parts of the village use natural and reconstituted Cotswold stone tiles, plus some clay. From the ground the two stone-look products can be hard to separate, but the edges, the thickness and the way the surface ages usually settle it. Our Cotswold stone roofing page explains how courses, valleys and ridges are built up.
Before pricing anything we take photographs of each slope, so you hold the same evidence we do. The written quote then states whether the answer is a repair, a partial re-lay or a full strip, and gives the reasons.
The walls matter to the roof as well. Thick rubble stone can hold moisture for a long time, so a failed gutter or a leaking valley often shows as damp in the wall well before it stains a ceiling. We follow the damp patch upwards to find where the water enters, which is why a survey here covers the gutters and the wall tops along with the slopes.
Chimneys deserve a mention. The slender brick stacks in the guidance stand on thin walls, and the lead around them is frequently the oldest part of the whole roof.