Can an old clay tile be matched?
By studying the tile in the hand. Plain clay tiles differ in size, camber, colour and surface, and a mismatch shows from the lane. We take a sound tile away to compare, and if no close match exists, tiles from a less visible slope may be moved to repair the front one. Age is a poor guide anyway. The Building Research Establishment sets 60 years as a clay tile's minimum life, and even that figure is a weak guide for old peg tile, so what the survey finds outweighs the date on a deed.
What tires first is often the detail around the tile: ridge mortar, fixings, and the strip of underlay draped into the gutter. The loft gets a look too, for daylight, damp timber and insulation shoved into the eaves, which blocks the air gap a roof needs. The pitched roofing page explains how a worn tile, a split batten or a perished strip of underlay is put right. Afterwards the photographs arrive with a single total price, and the choice of next step stays with you. Tiles that come off for the repair are sorted, and sound ones go back where they came from. Cut tiles at hips and valleys, and the half-round caps along a ridge, are checked one by one, because a single cracked cap lets in more water than a missing field tile. Carstone and flint walls that meet the roof get the same scrutiny at the abutments.