Question answered
How do you match old roof tiles?
The short answer
You match old roof tiles by identifying the type, size and profile first, then sourcing either reclaimed tiles of the same kind or the closest new range, and blending them across the slope. Reclaimed tiles already carry the weathering, new ones need seasons to settle. In conservation areas and on listed buildings, matching materials is often what the council expects.
A perfect match is rare, because old tiles have weathered, makers have changed ranges and sizes drift between batches. A good repair still looks right from the road and sits correctly on the roof.
Why a perfect match is hard
A tile is more than a colour. It has a length, a width, a camber, nibs or lugs of a certain depth and a surface that has taken years of sun, rain and lichen. Even two tiles from the same manufacturer, made a generation apart, can differ in size by enough to upset the gauge, the distance between battens, and make a course sit proud or low.
Ranges are also dropped, usually without notice to the people who own the roofs. A tile that was sold for decades can disappear, leaving the owner to find a stock tile that is close. The first job in matching is to identify what is on the roof: plain or interlocking, clay or concrete, machine-made or hand-made. A fallen tile is the best sample, and a photograph of the slope with a tape measure laid on it helps a merchant more than a description over the phone.
Reclaimed or new
Reclaimed tiles come from salvage yards and demolished roofs. They have the weathered face, the right look and often the right size, which is why they suit repairs to old roofs. They also bring risks: frost damage that is hard to see, mixed batches and limited numbers. Each one should be checked for cracks and tapped for a clear ring before it goes up, and a lot with no history is best left.
New tiles give a known specification, full supply and a clean start, but their surface stays bright for the first seasons. Many makers sell weathered or blended finishes that narrow the gap. Horsham stone is different. For a Horsham slab roof the Stone Roofing Association recommends reusing as much of the building's own stone as possible, and says slates lifted from other historic buildings should be avoided where possible. Supply was reported short in 2019, so ask where any stone has come from.
Weathering and where to put the new tiles
New tiles beside old ones will look different for a time, then settle as moss, dust and lichen even things out. You can speed up the blend. Fit the new tiles in a scatter among old ones, not in a block. Use tiles from several packs at once, so slight differences between batches spread across the slope. Put the best-weathered reclaimed tiles on the slope seen from the road, and use the newer ones on the back.
Where only a few tiles need replacing, the cleanest repair is to lift sound tiles from a hidden slope for use on the visible one, and fit the new tiles on the hidden side. The swap takes longer than dropping a new tile in the gap, and there is a little more risk of breakage when sound tiles are moved, but a repair of this kind disappears into the roof, and it leaves the street elevation looking untouched.
Conservation areas and listed buildings
Whether you need to ask first depends on the building. On an ordinary house a swap of like for like is not normally a planning matter. On a listed building, consent is the question, and a repair in tiles that do not match can tip the job into needing listed building consent. A small in-place repair using the same materials generally does not.
Conservation area rules vary street by street. Some carry an Article 4 direction that withdraws permitted development rights over roofs, so a change of covering at the front needs an application. Old Shoreham, Kingston Buci and Warwick Gardens have directions of this sort, and each one limits roof changes in its own way, mostly on the faces that look onto a road. Whichever applies to you, a quick conversation with the Adur & Worthing planning team, or the National Park Authority for houses inside the Park, costs nothing.
When the old battens and pitch get in the way
Lifting old tiles for reuse often shows what lies beneath. Battens that looked sound from the loft turn out soft at the nail line, and the cost of the job rises with that discovery. Our note on rotten roof battens explains what to expect and how it is handled. Either way you see photographs of what is found under the tiles before any extra work is priced.
Matching also has a limit set by the slope. A tile that looks right can still be wrong if the pitch is too low for it, which is worked through in the minimum pitch for roof tiles. The same applies when an extension changes shape: a flat roof turned into a pitched one has to pick a covering that suits both its new angle and its neighbour, and converting a flat roof to a pitched one looks at that choice. All of it sits within the wider range on our pitched roofing hub.
Finding and blending tiles
Where do you find a discontinued roof tile?
Start with salvage yards and reclaimed roofing merchants, then ask whether a tile maker still produces something close in size and profile. A sound tile from the roof, kept as a sample, is the most useful thing to bring. Be wary of a cheap lot with no history.
Will new tiles always stand out against old ones?
Only at first. Moss, dust and weather level the colours over the following seasons, and mixing tiles from several packs and scattering them among the old ones speeds the blend. A repair to the rear slope is usually unnoticeable from the start.
Tell us about your roof
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