Making Hide Glue Distemper — The Traditional Ceiling and Wall Paint of Europe

Weigh out 70-100 g of rabbit skin glue granules (or other hide glue). Place in a clean container and cover with 1 litre of cold water. Let the glue soak overnight (8-12 hours) — the granules will absorb the water and swell into a soft, jelly-like mass. Do not heat the glue before it has fully swelled — dry granules heated directly will form lumps. The ratio of glue to water determines the strength: for distemper, a weak solution (1 part glue to 10-14 parts water by weight) is correct. Too strong and the paint cracks; too weak and it powders off.

Place the container of swollen glue in a larger pot of warm water (a double boiler or bain-marie arrangement). Heat the outer water to 60°C — NEVER boil the glue. Boiling destroys the collagen protein and the glue loses its binding power permanently. Stir gently as the jelly melts into a thin, clear liquid. The glue solution is ready when it flows freely from a spoon. Keep warm throughout the mixing process — hide glue gels when it cools below about 35°C.

Gradually sift 1-2 kg of whiting (ground chalk, calcium carbonate) into the warm glue solution, stirring continuously. Add the whiting slowly and stir out all lumps before adding more. The ratio is approximately 1 part glue solution to 1.5-2 parts whiting by weight. The mixture should reach the consistency of thick cream — it should coat a brush and flow smoothly when applied. If too thick, add a little warm water. If too thin, add more whiting. Strain through a fine mesh if any lumps remain.

For a tinted distemper, mix earth pigment powder with a little water to form a smooth paste, then stir into the warm distemper base. Yellow ochre, red ochre, raw umber, burnt umber, raw sienna, burnt sienna, or lampblack all work beautifully. Pigment should not exceed 5-10% of the whiting weight — distemper relies on the whiting for its body and covering power. Test the colour on a scrap of white paper and let it dry — distemper always dries significantly lighter than it appears when wet. Adjust colour before applying to walls.

Apply the warm distemper to clean, dry plaster walls using a wide, soft-bristled brush. Work quickly — the paint begins to gel as it cools, so apply in confident strokes without over-brushing. Lay off each section with light, even strokes in one direction. Apply 2-3 thin coats, allowing each coat to dry completely (4-8 hours) before applying the next. The finish is a beautiful, chalky, perfectly matte surface with a subtle velvety texture. Distemper is best applied warm — reheat gently in the water bath if it gels during application. Clean brushes with warm water immediately after use.