Two villages in one: the valley and the heights
A roof beside By Brook and a roof on the B4039 do not face the same weather, and the repairs differ accordingly.
Castle Combe is really two places. Down in the narrow valley of By Brook, houses lean towards each other across small lanes, and the valley sides can keep the sun off for part of the day. Up on the B4039, Upper Castle Combe has more open sky. A roofer reading the village learns to ask, before anything else, which of the two a house belongs to.
In the valley, damp is the persistent enemy. A shaded roof dries slowly, so moss and algae settle and hold water against the covering. Gutters collect leaves. Water that does not leave the roof quickly finds a way into the timber beneath, usually at the eaves where rafter feet meet the wall. We pay particular attention to those, checking with a probe for softness and looking for dark staining from the loft.
In the upper village, the picture changes. Wind and driven rain are more of a concern, so the quality of fixing and the state of the edges decide how long a roof lasts. Chimney stacks stand exposed, and their pointing and flashings take the brunt.
Whichever part of the village you live in, the approach is the same. We inspect from a ladder where safe, from the loft, and where needed from a platform, and we record each fault with a photograph. A small repair can often be done from a ladder. Larger work needs a scaffold, planned around the lanes. How we decide between repairing and replacing is explained under pitched roofing.
Where gutters and downpipes are to blame, see gutters, soffits and fascias. Clearing a blocked gutter in the valley before winter can prevent a good deal of later trouble.
Myth
A bit of moss on a shaded cottage roof never matters.
Fact
Moss that keeps the covering wet or sheds into gutters does harm, so the job is to tell cosmetic growth from damaging growth.



