Renovating or repairing an existing roof comes with quite a few headaches, and matching the old roof tiles is often one of the trickiest. A single cracked tile seems easy enough to replace until you find out the profile on your roof stopped being made twenty or thirty years ago, and the closest thing at the local hardware store sits awkwardly next to its neighbours.

Finding the exact match can feel like a lot of effort, and you may need to do some legwork to get it right. To help you along, we have put together this post on five essential considerations for matching roof tiles, starting with what your tiles are made of and ending with when to get the repair done. Let’s dive in.

1. Start by Identifying Whether Your Tiles Are Concrete or Terracotta

Before you think about colour or shape, it helps to know which material you are dealing with, because it narrows the search straight away. Most tiled roofs across Australia use either concrete or terracotta, and a replacement should be made from the same material as the tiles around it.

Concrete roof tiles are made from a mix of sand and cement and are usually finished with a coloured surface coating. Over the years, that coating wears and fades, and the tile can develop a rougher texture or a covering of lichen. Concrete tiles also tend to be a little thicker and heavier than clay tiles of a similar size.

Terracotta roof tiles are made from fired clay. Glazed versions hold their colour for a very long time, while unglazed ones mellow into a softer, earthy tone.

If you have a broken tile that has already come down, look at the snapped edge. Concrete shows a grey, sandy core, whereas terracotta shows the same clay colour all the way through. Once the material is settled, the next question is how that tile physically connects with the ones beside it.

2. Look Past Colour to the Tile Profile and the Way It Interlocks

Colour is the first thing most homeowners notice, so it is natural to start shopping by shade. The trouble is that colour only tells you how a tile looks. It tells you nothing about whether the tile will sit properly on your roof.

It helps to think of matching in two parts. A cosmetic match means the new tile looks similar from the street. Physical compatibility means it has the same profile, size and interlocking features, so it overlaps the tiles around it, sits flat on the battens and channels water away as designed. A tile that passes the first test but fails the second can leave small gaps where wind-driven rain finds its way in.

3. Record the Markings, Measurements and Photos a Supplier Will Ask For

With the material and profile in mind, you can now build a simple record of your tile. This record does most of the work when you start contacting suppliers, so it is worth taking your time with it.

The safest way to get a tile to examine is to use one that has already fallen or ask your roofer to lift a broken one for you. There is no need to climb onto the roof yourself for this step.

Check the Underside for Manufacturer Details

Turn the tile over and look for a brand name, logo, model name or date stamp moulded into the back. Even a faint or partial marking can help a supplier work out the original range, which is especially useful for tiles made by companies that have since merged or closed.

Measure the Length, Width and Thickness

Write down the overall length, width and thickness in millimetres. If you can, also note the distance between the interlocking ribs and where the nib sits. A difference of a few millimetres can decide whether a tile fits.

Photograph the Front, Back and Side

Take well-lit photos of the face of the tile, the underside and the side profile, with a tape measure in the shot for scale. A photo of the roof taken from the ground is also handy, as it shows how the tiles have weathered as a whole. With this information ready, you are in a good position to start the search itself.

4. Search for Current, Discontinued and Recycled Tile Options

Some homeowners find a match quickly because their profile is still in production. For many older homes, though, the search takes a little longer.

Manufacturers refresh their ranges over time, and profiles that were common on homes built in the 1960s, 70s and 80s may no longer be made. Some brands have disappeared entirely. This is why old roof tiles can be hard to source through general retailers, and why discontinued roof tiles usually call for a more specialised search.

Recycled roof tiles are often the answer here. When roofs are replaced or homes are demolished, sound tiles are salvaged, sorted and resold. Because they have already weathered over many years, second hand roof tiles often blend in more naturally than a brand-new tile of the same profile. Each one should still be checked for cracks, chips and soundness before it goes on the roof.

When a tile cannot be found at a standard hardware store, specialist roof tile suppliers in Sydney and other parts of the country that stock both current and recycled profiles are a sensible next step. Sending them your photos and measurements gives them a far better chance of identifying a match, and they can tell you whether a close alternative is likely to interlock with your existing tiles.

5. Check the Wider Roof and Plan the Repair Before Severe Weather

When one tile has failed, the tiles around it may be close behind. Having the area checked for hairline cracks, slipped or loose tiles and worn ridge bedding or pointing helps you order the right number of replacement roof tiles in one go. It also confirms whether a targeted repair is enough. In many cases, swapping a handful of tiles is far more sensible than replacing a roof that otherwise has years of service left.

The same inspection is a good chance to look at gutters and downpipes, since a blocked or failing drainage system can push water where it should not go. This guide to roof drainage maintenance covers that side of the roof in more detail.

Timing matters too. A broken tile is unlikely to cause trouble overnight, but it is best dealt with before heavy rain and strong winds arrive. The NSW Government’s storm preparation advice encourages homeowners to check roofs for damage, leaks and loose tiles ahead of storm season, and the NSW SES offers similar guidance.

Moreover, older homes often need attention in more than one area. Renovations inside can bring similar decisions about repairing damaged surfaces or arranging tile replacement in bathrooms, kitchens and other interior tiled areas, which is separate work from roofing altogether.

Need Help Finding a Tile Match? Consult Your Local Roofing Professionals

Working on a roof carries real risk, and tiles can crack underfoot, so the repair itself is best left to someone with the right training and equipment. In NSW, roof tiling is classed as trade work, and a contractor licence is required for residential roof tiling jobs valued at more than $5,000 in labour and materials, including GST. It is also worth booking a professional assessment if you notice water stains on your ceilings, sagging sections or cracking across several areas of the roof.

When it comes to sourcing the tiles, you might not know that several local roofing professionals and suppliers in Sydney and surrounding areas keep stocks of second-hand tiles alongside their new ranges. Whether your roof is terracotta or concrete, they can help you identify your profile, find replacement tiles for old roofs and work out the right quantity for the repair.

Take your measurements and photos along and have a chat with them about your options. Once the right tiles are sourced, you can complete your roofing project with ease and keep your older home looking the way it was meant to.