Horseshoe and Threshold Protection for a Home

The horseshoe over the door is the most familiar protective charm in the English-speaking world. In folk belief iron kept away witches, fairies and ill luck, and the threshold — the boundary between the household and the world — was the place to set it. This working combines the horseshoe with two other widely recorded threshold customs, salt and a carefully swept step, to make a simple protection for a home.

How to do it§

1. Get a real shoe. A worn iron horseshoe was considered best, especially one found by chance on the road; a farrier will often give one away. Clean it with a wire brush.
2. Decide which way up. Folk opinion differs: many say the points should face upward so that the luck does not "run out"; others, especially in parts of the Midlands and Ireland, hang it points down so that the luck pours over all who enter, as on a blacksmith's forge. Choose the custom of your region or family.
3. Sweep the step. Sweep the threshold and the path outward, away from the house, saying, "Out with all that is ill, in with all that is good."
4. Hang the shoe. Fix it above the front door, outside or inside, with iron nails through its nail holes — three or seven nails were favoured in some areas — or on a strong hook. Say as you strike each nail: "Keep this house."
5. Lay salt. Sprinkle a thin line of salt across the threshold inside the door and leave it for a night, then sweep it out. Salt was used in British and European folk custom as a purifier and guard.
6. Mark the step (optional). In parts of Scotland and northern England women decorated doorsteps with patterns in whitening or pipeclay, a custom some folklorists link to protection as well as pride. Draw a simple border or interlace with chalk.
7. Bless the door. Touch the door frame and say a closing word in your own manner: "Iron at the door, salt at the step; peace within."

Origins and history§

The belief that iron repels supernatural harm is old and widespread. In British and Irish fairy lore iron was the surest defence against fairies, and a knife, nail or pair of scissors left in a cradle protected a baby from being taken. The horseshoe combined iron with the crescent shape and with the luck of the horse.

The antiquary John Aubrey noted in his Miscellanies (1696) that horseshoes were commonly nailed to thresholds to keep witches away, and remarked on how many he saw in London. Through the eighteenth and nineteenth centuries folklorists recorded horseshoes on houses, stables, churches and ships. A popular story, attached to St Dunstan, tenth-century Archbishop of Canterbury and a smith, tells how he shod the Devil's hoof so painfully that the Devil promised never to enter a house with a horseshoe on the door; the legend is recorded in modern folklore and is not found in the early Lives of the saint.

Thresholds were the focus of a great deal of house magic. Archaeologists working on early modern buildings regularly find objects concealed under thresholds, in walls near doors, and in chimneys: shoes, witch bottles, dried cats, written charms and marks carved on door frames. Ralph Merrifield and Brian Hoggard interpret many of these as apotropaic. Shoes concealed in buildings are so common that the Northampton Museum keeps an index of them. See protective magic and the entries on the witch bottle and hexafoil marks.

Salt's protective role is equally ancient, drawing on its use in preservation, its place in Jewish and Christian rites (salt is blessed in the Catholic rite for holy water), and the folk belief that witches and evil spirits could not abide it.

Variations§

• Horseshoe on the boat or stable: mariners and farmers nailed shoes to masts and stable doors.
• Iron under the doormat: an old nail or key laid under the mat, an easy option for renters.
• Rowan over the door: see rowan and red thread.
• Brides' horseshoes: decorative horseshoes given at weddings for luck, a Victorian and later custom.

Safety and good sense§

• Fix the horseshoe securely so it cannot fall on anyone; use a strong hook or proper nails into solid timber, and wear eye protection when hammering.
• If you rent, ask before nailing into the door frame; a hook or hanging inside may be better.
• Salt damages some stone, wood finishes and garden plants; use little and sweep it up.
• Do not disturb concealed objects in old buildings; report finds to a local museum or archaeologist.
• Charms complement good locks and neighbourly care; they do not replace them.

Sources and further reading§

• Magical House Protection: The Archaeology of Counter-Witchcraft — Brian Hoggard, 2019
• The Archaeology of Ritual and Magic — Ralph Merrifield, 1987
• Religion and the Decline of Magic — Keith Thomas, 1971
• Popular Magic: Cunning-Folk in English History — Owen Davies, 2003
• The Stations of the Sun: A History of the Ritual Year in Britain — Ronald Hutton, 1996