UK Brick Identification Guides

Practical information for identifying, matching and replacing bricks in UK buildings. These guides support the Find My Brick photo identification tool, but a physical sample should always be checked before ordering replacement bricks.

Brick identification guides

How to identify a brick

Start with the full face of the brick, then work through its measurable and visible features. Look at colour, texture, sandface, edge shape, firing marks and manufacturing method. If the brick has a frog, stamp, lettering or maker's mark, photograph that separately. Several useful photographs are normally better than one heavily cropped image.

Quick identification checklist

1. Take a straight-on photograph of the brick face.
2. Take a second photograph showing two to four surrounding bricks.
3. Photograph the end and edge profile if accessible.
4. Look for a frog, stamp, lettering, number or mould code.
5. Record length, width and height in millimetres.
6. Note whether the brick is smooth, sandfaced, wirecut, handmade, weathered or reclaimed.
7. Compare the result with a catalogue and, where possible, a physical sample.

How to photograph a brick for identification

Use even natural light and keep the camera reasonably straight to the brick face. Fill most of the frame with two to four brick faces, then take a closer image of any frog, stamp or unusual marking. Avoid heavy shadows, glare, filters and portrait-mode blur because they can hide texture or change the apparent colour.

Brick dimensions and common UK sizes

Modern UK bricks commonly sit around 215 mm long and 65 mm high, but sizes vary by product, age and manufacturer. Measure the brick itself rather than the mortar joint. Record length, height and width in millimetres. If the brick is built into a wall, measure an exposed brick where practical and remember that perspective can make an edge appear shorter or longer in a photograph.

Dimensions help separate similar-looking products, but a small dimensional match is not proof of an exact manufacturer or product range. Mortar thickness, worn edges and rounded corners can also affect measurements.

Frogs and maker's marks

The frog is the depression or recess formed in one face of many bricks. Its shape, depth and markings can help distinguish manufacturers and product families. Embossed words, numbers and mould codes can be particularly useful evidence. Photograph the complete marking clearly rather than cropping away its surrounding shape.

Colour and texture

Colour alone is rarely enough for an exact identification. Compare the whole face: grain size, sand coating, surface texture, edge sharpness, firing variation, speckling and colour transitions. Lighting, weathering, staining, algae and cleaning can all change how a brick appears in a photograph.

Why photographs can be misleading

A camera can change apparent colour depending on daylight, white balance, shadows and the surrounding wall. Wet bricks can look darker and stronger in colour than dry bricks, while cleaning can expose a different surface from the original weathered face. Use photographs to narrow the possibilities, then compare the physical sample whenever a replacement purchase matters.

Brick types: stock, wirecut and handmade

Manufacturing characteristics provide useful clues. Stock bricks often have a softer or more irregular appearance, wirecut bricks commonly show more regular faces and cutting characteristics, and handmade bricks can have greater variation in shape and surface. These are broad clues rather than proof of a particular manufacturer.

Regional clues and older bricks

Brickworks and product ranges have historically been associated with particular areas of the UK. Regional information can narrow a search, but it should not be treated as proof that a photographed brick came from that region. Older and reclaimed bricks are especially difficult because weathering, repairs and cleaning can alter their original appearance.

How to find a matching replacement brick

If you are replacing a damaged or missing brick, compare the physical sample with any suggested catalogue match. Check dimensions, colour range, texture, manufacturing type and current product information before ordering. A visually close photograph match is useful research, but it does not guarantee that two bricks will be identical in person.

Replacement brick checklist

1. Confirm the approximate length, height and width.
2. Compare the face colour in natural light rather than relying on a screen.
3. Look at surface texture, sand coating, firing marks and edge profile.
4. Check the frog, stamp, lettering or other mould markings.
5. Compare manufacturing characteristics such as wirecut lines or handmade variation.
6. Use catalogue and manufacturer information to narrow the shortlist.
7. Before buying a large quantity, compare a physical sample with the existing brick.

Using Find My Brick

Find My Brick is designed to help narrow down likely UK brick matches from photographs and available measurements. The result should be treated as a research starting point. The strongest identification normally combines several photographs with physical dimensions and any visible maker's marks.

• Take two to four clear close-up brick faces where possible.
• Photograph any frog, stamp or manufacturer marking.
• Add accurate length, width and height if you have them.
• Use the confidence score as guidance, not a guarantee.
• For replacement work, compare the physical sample before ordering a large quantity.

Frequently asked questions

Ready to try it? Upload a brick photo to Find My Brick or browse the UK brick catalogue.