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Post Info TOPIC: metal roof cleaning MAINTENANCE for Galvalume ®


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Posts: 27
Date: Apr 5, 2015
metal roof cleaning MAINTENANCE for Galvalume ®
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With a little care and attention during service,
a prepainted Galvalume
®
sheet will provide an
extended service life. While durable, factory-applied
finishes for metal building panels will last many years
longer than ordinary paints; they should be cleaned
thoroughly on a routine basis whenever the finish
is not washed by rain. Applications where the paint
finish is automatically washed by rain, such as roofing,
do not require this maintenance.
Cleaning restores the appearance of the building,
making repainting unnecessary, and maintains a
pleasing appearance, as well as removing the buildup
of corrosive materials. Applications requiring
maintenance cleaning include soffits, siding under
eaves, garage doors and the undersides of eave gutters.
Cleaning
In many cases, washing the painted surface with clean
water from a garden hose will remove most of the dirt
and accumulated deposits. Ideally, washing should be
done at least every six months and more frequently
in coastal areas where marine salt spray is prevalent
or where high levels of industrial fallout occur. In
cases where spray washing is ineffective in cleaning
stubborn dirt, mild detergents or household ammonia
solutions can be used as described below. In all cases,
test a small unobtrusive area for color-fastness before
cleaning large areas.
• Use one cup of Tide
®
(or other common
detergent containing less than 0.5% phosphate)
dissolved in five gallons of warm water.
NOTE: Detergents containing greater than 0.5%
phosphate are not recommended for use in
general cleaning of building panels.
• OR use one cup of household ammonia dissolved
in five gallons of water at room temperature.
Never mix ammonia with any kind of bleach.
• Never blend cleaners and bleach yourself. If
bleach and detergent are required, use detergents
containing bleach.
Using either solution, work from the top to the
bottom of panels with a well-soaked soft cloth,
sponge, brush with very soft bristles, or low-pressure
spray washer to clean the surface. Washing from
the top down avoids streaking. Application should
be gentle to prevent shiny spots. Scouring powders
or industrial solvents are not recommended, since
they may damage the paint film. Solvent-containing
cleaners such as Fantastik
®
are very effective and can
be used.
If mildew or other fungal growth is a problem and
cannot be removed as described above, detergent
containing bleach, such as Tide
®
with Bleach, is
recommended. The surface should be thoroughly
rinsed with water after cleaning to remove traces
of detergent.


__________________

J and E Roof and Gutter Cleaning Marysville Ohio

http://jegutter.webs.com/roofwash.htm

Roof Cleaning in Franklin, Delaware, and Union County OH

614- 738 - 1732

Edward Yackenovich

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