Lime Plaster

May 1 attended a earthen plastering class taught at a trade school in Tokyo taught by Ueno-san and Tanaka-san. May 6 attended a lime plastering workshop taught by Yawata-Oyakata (八幡親方).


消石灰(hydrate lime)  20kg

つのまた糊(seaweed glue powder)  475g

麻すさ(hemp fibers)  400g

(water) 適量(appropriate amount)

1.500グラムの麻すさを水につける(soak hemp fibers in water)

2.20キロの消石灰と約500グラムのつのまた糊をから合わせる(乾いている状態で混ぜる)(mix the hydrate lime and glue powder dry)

3.適量の水を足す(mix and add water as needed)

4.麻すさを千切って、消石灰に足す。(break up the clumps of hemp fiber and add to lime)


Three things I love about plastering. (1) It's practical and useful. (2) It's an art. And (3), it physical.


Cecilia Macaulay said...

The Earth floor looks lovely to walk on, and your photos remind me that the fun and connection comes first, the gorgeous gardens follow.
Well, I'm trying to find somebody to join us designing and making an outdoor 'doma'-like earth/concrete floor. Its for Asaba Art Square, an Urban Permaculture makeover we are doing at this childrens art schol dream-world in Yokohama. You and your work are just about perfect...I'd love to hear from you.

Melissa said...

Hello- Was that seaweed glue agar/ agar agar? I am playing around with lime plasters and trying to find new recipes... I found seaweed glue but it wasn't in a powder, rather pieces and raw, very expensive i might add. Was that Jeff Habibi in Chiang Mai- if so smal world- Cheers, Sandy

Kyle Holzhueter said...

The seaweed glue commonly used in lime plaster in Japan is called Tsunomata-nori (角叉糊) and is made from the Gigartinaceae family of red algae. Agar is made from the Gelidiaceae family of red algae. The primary reason for adding tsunomata-nori is to improve workability. More specifically, to slow the absorption of moisture by underlying coats of plaster from the top coat of plaster.