Estate houses are designed to be built quickly and repeatedly. That is a strength when something goes wrong, because a repair that worked on one roof usually works on its twin, but it also means one weakness can run along a whole street.
Q2.1What should I check on the main slope?
From the ground, look for tiles sitting out of line, dark patches where water lingers, and ridge tiles that look uneven. In the loft, damp timber or daylight around the chimney points to a leak. A tile fault is often local, and a repair that replaces the broken tiles and refixes the loose ones solves it. Our roof repairs page sets out how we decide between repair and replacement.
Q2.2Why do the small roofs fail first?
Porches, bay windows and garages are built lighter than the house, frequently with a shallow pitch or a flat covering, and they take weather from more directions. A garage roof of felt, EPDM or GRP depends on its edges and on water running off freely. If puddles sit on it a day after rain, the falls have gone wrong.
Q2.3Could older materials contain asbestos?
HSE guidance says a building constructed or refurbished before 2000 should be assumed to contain asbestos somewhere. Corrugated cement sheeting on a garage or shed, or old board under the eaves, is the sort of thing to leave undisturbed until it has been properly identified. We stop and tell you if a survey turns up something of that kind.
The covering and the condition of the fixings tell us what a roof needs, whatever its date.
Chimneys deserve a mention on any estate roof. The stack is the highest, most exposed part, and the pointing, the flaunching (the mortar cap that holds the pots) and the lead at its base all weather faster than the tiles. A cracked flaunching lets water into the stack and down through the ceiling, and is a small repair if caught early. See chimney repairs if yours looks tired.