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Material Description
CAFCO® SBR Bonding Latex is a single pack, synthetic latex
for use as a keycoat for fire protective coatings. It is designed for application to primed steel or concrete substrates.
CAFCO® SBR Bonding Latex forms part of the Cafco
FENDOLITE® MII passive fire protection system.
After mixing with Cafco FENDOLITE® MII, CAFCO® SBR
Bonding Latex forms a tough, textured, mechanical keycoat with strong adhesion properties. Once the mixture has
cured, Cafco FENDOLITE® MII can be applied over this keycoat.
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Typical Mechanical Properties
| Properties and
performance |
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Practical coverage |
50m² per 37kg of prepared keycoat |
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Number of coats |
One |
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Cure |
By air drying |
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Drying time |
10 to 36 hours. Varies with ambient conditions but high humidity, low temperature and low air change
can extend cure time significantly. |
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Relative density |
1.0 |
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pH value |
Approximately 10 |
Please consult nearest Promat office for specific details relevant to local conditions.
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| Typical substrates |
Please contact Promat Technical Department to confirm compatibility of primer with
CAFCO ® SBR Bonding Latex. |
| Substrate preparation |
The substrate must be clean, dry and free from visible moisture (including condensation), dust, loose mill
scale, loose rust, oil and any other condition preventing good adhesion. |
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| Methods |
Add 1 volume of water to 1 volume of CAFCO® SBR
Bonding Latex. Add 20kg of Cafco FENDOLITE® MII
to 17kg of diluted CAFCO® SBR Bonding Latex and
mix for 3 minutes.
Apply with a rotor/stator type spray machine, or for small areas a gravity fed hopper gun, to give 20-50% coverage
of substrate. |
| Limitations |
CAFCO® SBR Bonding Latex may be applied when the
substrate and air temperatures are at least 2ºC and rising. Maximum substrate and air temperature is 45ºC.
Substrate temperature should be at least 2ºC above dew point temperature. |
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Download full product description in PDF file. |
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