TDS

TECHNICAL DATA SHEET
HE289 - WHITE ROOFING SEALANT
Last Rev Date: 09/14/2011
Physical Properties
Consistency @ 77º FAppearance
Paste/mastic Soft easily troweled paste
Maximum VOS
0.42 lbs/gal
Flash PointApplication Temperature
50º F and rising >212º F
Solids By Weight
55%
FreezabilityBase
Water-based acrylic resins & mineral
fibers
Do not freeze
Specific Gravity @ 77º F (25ºC)
1.39
Maximum VOCColor
White 50 g/l
Weight Per Gallon
11.4-11.8 lbs
Approvals and Certifications
Meets or exceeds ASTM Specification C-920, Class 25
Description
HE289 - WHITE ROOFING SEALANT is a white, elastomeric acrylic patching compound specially formulated for repairing and
preventing roof leaks prior to coating with an acrylic reflective coating. HE289 - WHITE ROOFING SEALANT makes your job
easier:
·
Doesn't "bleed through" reflective coatings
·
Brush grade for fast application
·
Apply to dry or damp (not wet) surface
·
No delays - skins over quickly
·
Water based for soap and water cleanup
HE289 - WHITE ROOFING SEALANT will not crack, craze, or lose adhesion when applied as directed to a smooth, clean,
sound roof surface.
Usage
·
Standard mineral surface cap sheet
·
Smooth-surface built up roofing
·
SBS modified roofing
·
Previously-coated asphalt roofs
·
Weathered metal roofs
·
Concrete and stucco parapet walls
Coverage
12 1/2 sq. ft. per gallon applied 1/8" thick.
Surface Preparation
HE289 - WHITE ROOFING SEALANT is ready to use. Do not thin or stir. Surface must be clean and free of all dust, rust,
residues, foreign matter and all contaminants (chalk, grease, wax, etc.) that may cause loss of adhesion. Remove rust and scale
from metal by wire brushing. Sweep area thoroughly to remove all gravel, dust, dirt and other foreign matter that would interfere
with a good bond. Scrub accumulated residue on low areas with detergent and rinse thoroughly.
HE289 - WHITE ROOFING SEALANT may be applied to a dry or damp - but NOT WET - surface. Dampen concrete and
masonry surfaces before applying. DO NOT USE WITH ASPHALT PRIMER!
Henry Company - 909 NORTH SEPULVEDA BLVD., EL SEGUNDO, CA 90245
Technical Services - 800-486-1278 Email: [e-mail]
www.henry.com
TECH HE289