SKIM MILK WHITEWASH

Press, Volume LXXII, Issue 21938, 12 November 1936, Page 10

SKIM MILK WHITEWASH

♦ Use a mixture of white lime and cement. Fill a big drum to a third of its capacity with unslaked lime and add water in small quantities, to slake the lime. Cover up with a bag and let sand till the next day. Then take some of this lime and add to it an equal quantity of cement, mixing the two thoroughly. Thin down with skim milk, and run through a sieve to take out coarse stuff, if any. Water, in which seme salt has been dissolved, can be added before the wash is applied. The mixture must be stirred well when it is being thinned down to the required consistency. The function of the skim milk is to help the wash to “stick” to the wall, and the salt helps to harden it. Cement by itself is liable to peel off. When slaking white lime one must he careful not to add the water all at once. When slaking, the lime expands and great heat is generated. Sometimes this heat is used to melt tallow or paraffin wax. which is mixed with the unslaked lime, the tallow being put in to make the wash smooth, and to assist it to stick to the wall. The skim milk is then not used.