KEMSEAL S-80 Silicone Roof Coating
Kemseal S-80 is a 100% solids fluid applied single component
elastomeric silicone polymer roof coating that cures to provide a long term
waterproof and weatherproof protective seamless membrane layer for roof
surfaces. Kemseal S-80 is manufactured using advanced silicone technology to
provide superior UV protection and ponding water resistance that prolongs the
life of all existing roofing systems providing immediate and long term cost and
energy savings. Kemseal S-80 coating (white) meets Cool Roof reflectance
performance requirements for both flat and sloped roofs considerably reducing
thermal heat intake into the building, saving considerable building energy cooling
UV-stable top coat for polyurethane and other
Protective coating to seal and repair existing
roofing and gutter systems.
Restore rusted metal and asbestos cement
Restoration of aged roof membranes such as;
torch-on, EPDM, and other sheet and liquid applied membranes.
Lining Box gutters.
COLOR:-Standard; white and gray.
WEATHERABILITY: Excellent durability, color
stability, UV and chalk resistance.
TOXICITY: Not for use in contact with edible
substances or potable water.
ADHESION: Bonds to suitably prepared and primed
surfaces such as aged asphalt, aged EPDM, aged cap sheet, composite, concrete,
fiberglass, metal, modified bitumen, sprayed polyurethane foam and most
existing coatings on flat or sloped roofs.
ELONGATION: 200% +/- 10%
TEAR RESISTANCE: ASTM D1624 Die C lbs/inch 32
pli (5.7 kg(f)/cm)
HARDNESS: ASTM D676 50 Shore A
COVERAGE: Un-reinforced Application: 1.8 sq. m/l
(0.55ltr/sq.m.) per coat on smooth surfaces. Coverage rate will decrease on
textured surfaces, and more coating will be used on first coat than on
additional coats. Existing smooth surface roofs can be completed in 1 or 2
coats at 0.5mm DFT. Reinforced/Detail Application to be at 1.ltr/sq.m) to
achieve min 1mm DFT.
SHELF LIFE: 12 months from date of manufacture
stored at 20 degrees C in a cool dry place.
INSTALLATION: SURFACE PREPARATION:
Surfaces shall be sound, fastened as per manufacturers' directions, clean, dry and free of corrosion, oils and other contamination.
Waterblast, wire brush/sandblast roof surfaces as necessary to remove all
contaminates and weathered substrate. Prime/seal asphalt, EPDM, concrete and
single ply roofing with Kemseal WBE water based epoxy primer applied as per
data sheet- this also acts to resist bleed-through over asphalt surfaces.
Varying substrates may require alternate products or treatments. Check adhesion
by applying a test area. Waterproof Protective Coating For Roofs USE
Detail requirements may vary depending on specific site and
substrate conditions. Typically, a liberal application of Kemseal S-80 sealant
and/or a detail coat of Kemseal S-80 Coating at 1mm thickness, reinforced with
polyester fabric embedded into wet base coat and centred over joint should be
applied where movement between surfaces is expected such as at fasteners,
joins, laps, cracks, terminations, penetrations and internal/external corner angles
etc. Heavier application and bond breaker tape may be required where increased
movement is expected.
Mix before application to assure uniform color and
consistency. A minimum of 1 or 2 coats are required applied at 2-3 sq.m/ltr
over existing roofing substrates or top-coating liquid applied membranes. For
box gutter lining, or other critical areas, apply at minimum 1 ltr/sq.m. To
help ensure even coverage, a different color may be used for the first coat to
create a color contrast. Apply by brush, roller or spray. Allow the first coat
to dry for 3 to 12 hours prior to re-application. Use a1.5" nap roller cover-
dip roller directly into pail and apply, or pour product onto flat roof surface
and roll out evenly, or -spread with an 1/8" notched squeegee then immediately
back roll for a smooth, even finish. Alternatively, apply with airless sprayer
sprayed evenly to achieve consistent coverage. Textured surfaces may require
PRECAUTIONS: Do not apply in temperatures below 2oc, above
40oc or if rain is expected within 2 hours. Do not use this product in a
situation that exceeds this products physical limits. Do not walk on Kemseal
S-80 other than for periodic maintenance; for areas of light foot traffic,
create a walking path by applying an additional coat reinforced with polyester
Tie-tex cloth, or rubber granules.
DRY TIME: Allow the first coat of Kemseal S-80 to dry for 3
to 12 hours. Re-coat as soon as the first coat can be walked on without causing
damage. NOTE: drying time depends on weather conditions such as temperature,
humidity and air movement.
CLEAN UP: Application tools and equipment can be cleaned
with xylene or kerosene before cure. Once a container of Kemseal S-80 is
opened, the curing process will start. Use the entire contents of an opened
container if possible. Unused product in an open pail will begin to cure from
the top down. This can be cut out with with a knife and uncured portion can be
MAINTENANCE: Roof structures may settle over time. A
periodic inspection of your roof, which includes transition areas, flashing,
vents and skylights, is recommended. Keep drains cleared at all times. Roofs
become slippery when wet- use extreme caution. Kemseal S-80 may be re-coated
periodically after thorough cleaning as necessary to achieve adhesion.
CAUTION: For specific Health and Safety information please
refer to the Material Safety Data Sheet.
DISCLAIMER: The information contained
in this technical bulletin is as up to date and correct in detail as possible
and is intended to give a fair description of the product and its capabilities
based on actual service history. In practice, the substrate and environmental
conditions vary widely, making it essential for the user to determine the
products suitability for a particular application and that the product is not
used beyond its physical limitations. As the use of this material is beyond the
manufacturers' control, no guarantee expressed or implied is made as to such.
Liability is limited to replacement of material proved faulty. Kemforte Systems
terms and conditions of sale apply. The user is responsible to follow current