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 COMMON PROBLEMS IN THE BASEMENT
Figure 4-12.
Common Problems in the Basement.
(Source:
Douglas Bucher, Preservation League of New York State)
PRODUCTS FOR USE IN SPOT CLEANING STONEWORK
NOTE : Before undertaking cleaning, test in a small,
inconspicuous area. Water must be clean and free of metallic
elements.
Graffiti, spray paint
On exterior stonework:
acetone, varnish solvent,
commercial paint stripper.
On interior stonework:
solvents such as lacquer
thinners or chlorinated
hydrocarbons (most effective
with fresh stains)
Asphalt, bitumen, tar
Kerosene, xylene, toluene,
mineral spirits, chlorinated
solvents, automobile asphalt
cleaner.
Oil, grease
Chlorinated solvents,
petroleum solvents, ammonium
hydroxide.
4-20
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