Sarnacol®-2152
Two component adhesive for Sarnafil® G 410 L Felt (Formerly Sarnafil® G 476) and Roofing Applications
Two components polyurethane adhesive.
- Adheres to solid, rough and clean concrete or cement mortar substrate
- Solvent-free
- Cold-applied (no heat or open flames required)
- No lateral water migration between the concrete structure and the membrane system
- Thixotropic
- Primer free application
Usage
Sarnacol®-2152 is used to adhere Sarnafil® G 476 (unexposed), Sarnafil® G 410 L Felt (exposed) on concrete.Advantages
- Adheres to solid, rough and clean concrete or cement mortar substrate
- Solvent-free
- Cold-applied (no heat or open flames required)
- No lateral water migration between the concrete structure and the membrane system
- Thixotropic
- Primer free application
Packaging
| Component A | 25 kg pail |
| Component B | 5 kg pail |
| Component A + B | 30 kg set |
Colour
| Component A | White paste |
| Component B | Brown liquid |
Product Details
APPROVALS / STANDARDS
- Quality management system EN ISO 9001
Chemical Base
| Component A | Polyols, filled |
| Component B | Isocyanate derivatives |
Shelf Life
| Component A | 12 months1) |
| Component B | 9 months1) |
1) From date of production if stored properly in orginal, unopened and undamaged sealed container.
Storage Conditions
Dry storage at temperature from +5 °C up to +30 °C. Protect from direct sunlight, rain, snow, ice, humidity, etc.
Density
| Component A | ~1.6 kg/l |
| Component B | ~1.2 kg/l |
| Component A + B | ~1.5 kg/l |
Application
Mixing Ratio
Component A : Component B = 100 : 19 (by weight)
Ambient Air Temperature
min. + 5 °C / max. + 40°C
Pot Life
| Temperature | Pot Life |
| + 20 °C | 30 min. |
| + 30 °C | 15 min. |
Curing Time
Full cure ~4 hours at +23 °C / +50 % r.h.
The curing time of Sarnacol®-2152 is dependent on the ambient temperature.
Consumption
Consumption depends on the roughness and absorbency of the substrate and is about 500–1 000 g/m².
SUBSTRATE QUALITY
Reinforced concrete structure must be:
- Hardened and of sufficient compressive strength, minimum 25 N/mm2,
- With a minimum pull off strength 1.5 N/mm2
- Dry, sound, clean and free of any contaminations (e.g. dust, oil, grease, release agent)
- Free from surface defects (e.g. blowholes, voids, honeycombing, cracks, protrusions)
SUBSTRATE PREPARATION
The concrete or other suitable cementitious substrate must meet the defined substrate quality. If the substrate does not fulfil the requirements, the surface must be pre-treated prior to the application in order to prevent any subsequent damage to the membrane sheets.
MIXING
Mix components A+B together in the correct proportion into a suitable mixing pail for 3-5 minutes with a low speed mixer until the material becomes smooth in consistency and has a uniform white colour. Avoid aeration while mixing the 2 components.
Mix only that quantity which can be used within its pot life.
APPLICATION
Apply membrane on substrate, marking lines for application. Roll up membrane. Apply the adhesive on the substrate with spatula or squegge. Unroll Sarnafil® G 476, Sarnafil® G 410 L Felt on to adhesive, pay attention to the extruded adhesive on both sides and clean up timely, to avoid any pollution to the membrane which may affect the welding. Press membrane surface lightly to make membrane and adhesive contact each other thoroughly. After adhesive is cured, welding can be started.
CLEANING OF TOOLS
After application, tools and devices must be cleaned immediately with Sika® Colma Cleaner or SikaForce®-7260 Cleaner. Hardened and cured material can only be removed mechanically.
Hands and exposed skin should be washed immediately using Sika® Handclean Towel or a suitable industrial hand cleaner and water.
Do not use solvent!