All finishes

PaintFlour

Peinture à la farine

Swedish paint: a cooked flour porridge, made for exterior timber — cladding, shutters, outbuildings.

A Falu-red barn in Sweden: flour paint as it has been kept up for three centuries.

A Falu-red barn in Sweden: flour paint as it has been kept up for three centuries.

Photo W.carter · CC0 · Wikimedia Commons

At a glance

Thickness0.1–0.3 mm
Water
Keep it dry
Outside
Exposed
Floor
Walls only
Upkeep
Periodic
Vapour
Vapour-open

What it is made of

Rye or wheat flour boiled in water, iron sulphate, ochre (Falun red), linseed oil, black soap.

Application

The support

Bare sawn wood, or wood already in flour paint. Brush off old chalky coats; never over varnished or acrylic-painted wood.

Tools

Large pot, round brush, whisk.

Steps

  1. 1Cook the flour in water to a thick porridge, then add the iron sulphate and pigment.
  2. 2Stir in the linseed oil and soft soap, and cook a little longer.
  3. 3Apply warm, in two thick coats, in dry weather above 5 °C.

Drying

A day between coats; the surface stays slightly chalky, which is how it should look.

The trade’s general sequence, at about 20 °C. Where a producer publishes its own data sheet, that sheet wins.

Price

No producer in this catalogue sells this finish with a published price yet. It is described here for what it is; the catalogue will list it once a producer publishes one.

Upkeep

It does not flake, it erodes: another coat straight over the old one after 5–10 years, with no stripping.

  • Demands · Periodic
  • Vapour-open

On a real wall

Flour paint on boards and shingles: matte, chalky, and it does not flake — it erodes.

Flour paint on boards and shingles: matte, chalky, and it does not flake — it erodes.

Photo Zquid · CC BY-SA 4.0 · Wikimedia Commons