Michigan State University Extension
Home Maintenance And Repair - 01500113
06/24/03

Slate, Stone-Traits and Cleaning


Slate is quarried stone used for fireplaces,
hearths, and floors in the home.

Brush stone occasionally to remove dust and
"freshen" stone or dust with dusting attachment of vacuum
cleaner. To remove soot, dissolve 4 ounces of yellow
laundry soap in boiling water. After the mixture has
cooled, add 1/2 pound of powdered pumice and 1/2 cup of
household ammonia. Mix thoroughly. Use a stiff brush to
remove as much soot as possible. Then using a paint
brush, paint stones with soap mixture, let remain 1/2
hour and clean with a stiff brush and warm water. Rinse
thoroughly with warm water.

Wash slate with detergent or soap, using a mild
abrasive if necessary. Rinse and wipe dry. For added
beauty, rub dry slate with a soft cloth dipped in lemon
oil furniture polish. Using a fresh cloth, wipe off
excess oil and buff the stone. This makes stone uniformly
dark and glossy. Do not use wax on fireplaces as it is
affected by heat.

This article was written by Anne Field, Extension
Specialist, Emeritus, with references from Mary Ellen
Delsipee and Isabel Jones, previous Extension Specialists.

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