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Lucas #648 Aluminum Roof Coating is designed to provide a reflective surface for roofs, metal buildings, tanks, and mobile homes. Aluminum pigmented asphalt coating can substantially reduce interior building temperature and prolong roof service life
Lucas 648 is formulated from specially refined asphalt, aromatic and aliphatic solvents. Light brushing viscosity allows for quick and economical coverage
Surface to be coated must be dry and free of dirt or corrosion
particles. It will be helpful to turn the pails upside down 24
hours prior to application so that the settled aluminum
releases from the bottom of the pail. Before mixing pour 50%
of the liquid contents into a clean 5 gallon pail. All of the
aluminum should remain in the original pail. Mix the
aluminum into the liquid contents. When it is free of lumps,
add back the liquid from the second pail and mix until uniform.
Mechanically mix coating thoroughly and continuously before
and during application. Power mixing is recommended, a
square bladed drywall mud mixer and 1/2 inch drill is
recommended for 5 gallon pails.
Apply evenly with a soft bristle brush or suitable spray
equipment at the rate of not less than one half and not more
than three quarters of a gallon per 100 square feet. For best
results, brush coating in one direction with the slope of the
roof. Do not apply over fresh roof repairs or coating. Roofing
asphalts, both hot and cold applied, contain oily constituents
which may bleed through and stain the finished coating. As
this condition is unpredictable, we recommend that the user
apply a small amount of #648 to the area of the roof to be
coated in order to test its performance. Use #648 as it comes
from the container, no thinning is necessary with this product.
Roof surfaces must be dry for coating application. Even
when the surface appears dry, moisture trapped in the roof,
deck or insulation. A moisture scan is recommended prior to
application. Application of this coating within 5ºF of the dew
point is not recommended.
Warning! Combustible Liquid and Vapor
petroleum distillates. Keep away from heat and open flames.
Avoid prolonged contact with or inhalation of solvent fumes. A
NIOSH approved respirator with organic vapor cartridges is
recommended. Do not take internally.
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