Epoxy.com Product #844
This Product Replaced
by Epoxy.com Product #899
DESCRIPTION:
For Refererance Only: This product has been replace by Epoxy.com
Product #899.
Product #844 Concrete Membrane Deck Primer is a 100% solids, two (2)
component polyurethane primer. This thin film primer promotes long term wear
and superior adhesion of the Product #409 Resilient Traffic Bearing Membrane.
The Product #844 penetrates and seals the surface to allow for a smoother,
pinhole free application.
WHERE TO USES:
Product #844 is used only on concrete. May be applied to properly
prepared interior and exterior concrete to enhance the bond and performance
of the Product #409 System.
ADVANTAGES:
- 100% Solids
- Zero VOC
- Ease of application
- Eliminates blisters and pinholes
- Fast cure, ready to accept overcoat in 2 hours
- 1:1 Mix Ratio
SYSTEM DESCRIPTION:
Pedestrian Grade and Traffic Grade - For pedestrian grade
or traffic grade application apply one coat of Product #844 at 3.0 to 4.0
mils WFT to achieve 3.0 to 4.0 mils DFT. It is recommended that while wet,
the Product #844 be lightly seeded with a rounded 16 / 30 silica sand.
Please refer to Product #409 Resilient Traffic Bearing Membrane Product
data sheet for the complete system description for over coating the
Product #844.
PHYSICAL PROPERTIES:
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Color:
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Yellow
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VOC
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Zero
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|
Volume Solids
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100%
|
|
Dry Time:
|
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Dry to touch
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1 hr @ 70�F
|
|
Dry to recoat
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2 hrs @ 70�F
|
|
Maximum recoat interval of Product #844 when over coated with
Product #409 shall not exceed 36 hours. If maximum over coat is
exceeded reapply Product #844 over a clean dry surface.
|
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Shore D Hardness
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43
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Tensile Strength
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1600 psi
|
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Elongation
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350%
|
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MVT, perms at 30 mils dry
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0.061
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SURFACE PREPARATION:
Concrete - All concrete must be cured a minimum of 28 days. All
concrete must be clean, sound, dry, free of oils and other bond inhibiting
contaminants. Air and substrate temperature shall be 40�F and rising.
Mechanical surface preparation such as shot blasting, abrasive blasting or
hydroblasting is required to produce a clean and lightly profiled or
textured surface. If hydroblasting is used, allow 24 to 48 hours for
concrete to dry thoroughly.
MIXING:
Combine one (1) part component "A" and one (l) part component "B" by
volume, in the quantity desired. Mix Product #844 with a mixing paddle and
low speed drill for two (2) minutes. Avoid entrapping air while mixing.
Apply immediately after mixing.
APPLICATION:
Apply by brush, roller, or airless sprayer at 3.0 to 4.0 mils WFT to
achieve 3.0 to 4.0 mils DFT. While Product #844 is still wet, lightly seed
with a rounded 16 / 30 silica sand. Allow to dry a minimum two (2) to four
(4) hours at 70�F or until tack free prior to application of
Product #409 Intermediate coat.
LIMITATIONS:
Minimum application temperature of 40�F and rising. Do not apply over
damp or wet concrete. Do not apply to surfaces with active moisture vapor
transmission. Product #409 Intermediate must be applied within 36 hours
after application of Product #844 Primer.
PACKAGING:
Product #844 is packaged as a 2 gallon and 10 gallon unit.
STORAGE:
Product #844 shall be stored in a dry, protected area at temperatures
between 60�F and 90�F. Do not allow to freeze.
CAUTION:
Product #844 contains organic isocyanates MDI. Avoid breathing vapors.
Avoid contact with skin and eyes. Do not ingest. Keep away from foodstuffs
and wash thoroughly before smoking or eating. Should skin contact occur,
wash skin well with soap and water. Should eye contact occur, flush
thoroughly for at least 15 minutes with water. Get medical attention.
FOR INDUSTRIAL USE ONLY. KEEP AWAY FROM CHILDREN.
