Carpenter's marks: why your frame was built somewhere else entirely
Timber-framed houses were rarely built where they stand. A carpenter's yard would cut, joint and test-fit an entire frame first — laying it out flat, checking every mortice and tenon fitted its partner — then take it apart again for transport and re-erection on the actual building plot. That process, known as "scribing," only works if every joint can be put back exactly where it came from.
The solution was a numbering system cut directly into the timber with a race knife or chisel, usually a simple series of Roman numerals — I, II, III, IIII — struck across each mating pair of joints so they could be reassembled in the right order on site. Roman numerals were the practical choice for a reason that's easy to miss today: they're built from repeated strokes rather than distinct letterforms, so a carpenter didn't need to read or write to cut, recognise, or match them. In a trade where literacy wasn't assumed, a mark you could count was more reliable than a mark you had to read.
If you find small Roman numerals chiselled into a joint face on an exposed beam, that's not vandalism or graffiti — it's the original assembly instructions, older than the house has stood on its current site.
Witch marks: protection cut into the frame itself
The second kind of mark has nothing to do with construction. Look near a hearth, a doorway, or a window opening — the points a superstitious household considered vulnerable to something getting in — and you may find a burned or scratched symbol: a daisy wheel (a compass-drawn six-petal flower), a hexafoil, interlocking V shapes, or a simple taper burn where a candle flame was deliberately held to the wood.
These are usually called witch marks, or apotropaic marks, from the Greek for "turning away evil." They weren't the work of witches — they were made by the people who lived in the house, as protection against them, and against misfortune more generally. The double-V mark is thought to invoke the Virgin of Virgins; the daisy wheel's unbroken, endless line was believed to trap or confuse anything trying to pass along the timber. They cluster around exactly the openings you'd expect if the intent was to guard the house's weak points — chimneys, thresholds, and window frames — which is itself good evidence they were placed with real intent, not idly.
They're most associated with the 16th and 17th centuries but the practice is older and lingered later in places. Finding one doesn't date a beam precisely, but it does tell you something about the household that lived under it — and it's a mark worth protecting rather than sanding out.
What to do if you find either
- Roman numerals on a joint face: leave them exactly as found — they're part of the structural history and, occasionally, useful evidence if a frame is ever taken down and re-erected again.
- Daisy wheels, hexafoils, or burn marks near a hearth or opening: treat as original fabric, not damage. A finish should work around them, never over them.
- Unsure which you're looking at: send us a photo before you do anything to the beam. It costs nothing and it's the difference between preserving history and erasing it by accident.
Every mark on an old beam was put there on purpose, by someone solving a real problem — whether that problem was "how do I get this frame back together" or "how do I keep my family safe." Reading them is part of understanding what you actually own.