915 sealant is a one-component, smooth polyurethane adhesive capable of dynamic joint movement totaling 70% of original joint geometry (±35%). The sealant cures to a tough, flexible rubber when exposed to moisture present in the atmosphere.
Bostik 915’s all-season formula has physical properties that will remain stable over time. The cured performance temperature range is -40°F to 150°F. Where textured appearance is needed, please use Bostik 916.
FEATURES
- Tenacious bond to difficult substrates
- Permanently flexible
- Miami-Dade approval NOA 17-0329.18, 15-0520.01
APPLICABLE STANDARDS
- ASTM C920, TYPE S, GRADE NS, CLASS 35 USE NT, A AND M
- US Federal Specification TT-S 00230C (COMB-NBS) for one-component sealants as Class A, non-sag
- CARB, SCAQMD, and OTC compliant
- Canadian Specification CAN /CGSB 13-M87
- Miami-Dade County, Florida, NOA : 13.0423.10, 05/24/17
- Miami-Dade TAS 102- Static Uplift Resistance
- AAMA 3
- AAMA 100/200/300 installation requirements
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TABLE 1: TYPICAL UNCURED PROPERTIES* |
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Property |
Value |
Test Method/Note |
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Tool/Work Time |
60 min. |
Bostik Test Method |
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Skin Time |
4 hours |
Bostik Test Method |
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Curing Time @77°F (25°C) |
2-7 days |
Varies w/relative humidity |
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Flow, Sag or Slump |
0.3 inch |
Bostik Test Method |
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* Values given above are not intended to be used in specification preparation purposes. |
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TABLE 2: TYPICAL CURED PROPERTIES* (AFTER 14 DAYS CURE AT 77°F AND 50% RH) |
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|
Property |
Value |
Test Method/Note |
|
Hardness (Shore A) |
42 |
ASTM D 2240 |
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Modulus @ 100% Elongation @ 25% Elongation |
65 psi 45 psi |
ASTM D 412 ASTM D 412 |
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Tensile Strength @ Break |
133 psi |
ASTM D 412 |
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Elongation @ Break |
685% |
ASTM D 412 |
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Adhesion Peel |
>5 piw |
TT-S-00230C / ASTM C 794 |
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Joint Movement Capability |
+/- 35% |
TT-S-00230C / ASTM C 719 |
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UV Resistance |
Pass |
ASTM C 793 |
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Static Uplift Resistance (concrete roof tile) |
49 |
Miami-Dade TAS 102 |
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* Values given above are not intended to be used in specification preparation purposes. |
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