Methylcellulose is used in the preparation of paints and whitewashes, as well as mortars or lime stuccoes. It is a water retentive, which allows to extend the working time when the support is porous or it is hot and dry. It is also used as a resin for the manufacture of traditional gouaches as well as for the preparation of vinyl, acrylic and tempera colors.
Do not use hot water for glue preparation. Methylcellulose dissolves in
cold water, forming a solution or clear viscous gel. To use as glue or
as a binder in plaster or paint mixes, mix 15 to 30 gr of powder
in 1 liter of water.
In cold water: add the powder, stirring gently, in cold water
(temperature below 38 ° C). Slow dispersion allows a good separation of
particles. Continue stirring until a homogeneous solution is obtained.
The concentration depends on the work to be done.