Sarnacol®-2170
Contact adhesive for Sarnafil® felt backed roof waterproofing membranes
Sarnacol®-2170 is a 1-part, nitrile rubber based solvented contact adhesive
- Proven performance over decades
- Adheres to solid, rough and clean surfaces
- Application by brush or roller
- Good adhesion to different substrates
Usage
- Bonding Sarnafil® G-type and Sarnafil® G Felt-type waterproofing membranes to substrates and for perimeter and flashing details.
- Concrete, lightweight concrete, brick, plaster
- Oriented strand boards (OSB), plywood panels
- Fibre cement boards
- Mineral fibre boards with sufficient compressive strength and appropriate surface for bonding
- Polyester, hard and soft PVC
- Galvanized steel, PVC-coated metal sheet
- PUR/PIR insulation boards with lamination (glass or mineral fibre fleece)
Advantages
- Proven performance over decades
- Adheres to solid, rough and clean surfaces
- Application by brush or roller
- Good adhesion to different substrates
Packaging
One way container: | 5 kg, 20 kg |
Packing unit: | Euro pallet or single container |
Refer to current price list for packaging variations.
Colour
Red
Product Details
Chemical Base
Solvented nitrile rubber
Shelf Life
24 months from date of production.
Storage Conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging
Density
~0,90 kg/l (+20 °C)
Volatile organic compound (VOC) content
VOC-CH (VOCV) | 7,4 % |
VOC-EU (Solvent) | 7,4 % |
Consistency
Liquid
Compatibility
Shall not be used on substrates:
- EPS/XPS insulation boards
- Copper plate
- Bituminous substrates
- Waterproofing membranes (thermoplastics/elastomers) excluding soft PVC
These materials could adversely affect the product properties.
Application
Ambient Air Temperature
+5 °C min
Substrate Temperature
+5 °C min
Setting Time
Full adhesion is generally achieved immediately after bonding. For the wet bonding process, allow a setting time of 15 minutes to 1 hour.
Final strength is achieved after ~1 week. All these times can be affected by ambient conditions.
Consumption
~300 g/m2–500 g/m2 up to 1000 g/m2 on very absorbent substrates.
Consumption depends on the roughness and absorbency of the substrate.
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
SUBSTRATE QUALITY
The substrate must offer sufficient strength and adhesion to resist the forces generated by wind suction.
SUBSTRATE PREPARATION
The substrate must be resistant to solvents and must be firm, clean, dry, free from oil, grease, dust, stripping agents and loose friable particles. Sheet metal must be cleaned with Sarna Cleaner before adhesive is applied.
APPLICATION
Reference must be made to further documentation where applicable, such as relevant method statement, application manual and installation or working instructions.
General information
Sarnacol®-2170 must be stirred carefully before use. Keep adhesive container closed whenever adhesive is not being used to keep workability constant (to reduce solvent evaporation).
Viscosity of the Sarnacol®-2170 contact adhesive can be changed and adapted by adding Sarna Cleaner. It may be necessary to modify the viscosity after prolonged storage or if container was opened for long periods of time. Mix Sarna Cleaner into the adhesive by carefully stirring small quantities into the adhesive to achieve the desired viscosity.
Use Sarna Cleaner to remove adhesive residue from the roof membrane.
Contact bonding procedure (Sarnafil® G-types on substrates and for perimeter / flashing details)
Spread adhesive evenly onto the substrate using an application roller. Do not apply the adhesive to an area greater than can be covered in one day. Allow the adhesive to dry completely. Apply 2 coats of adhesive on absorbent substrates (the first coat must be completely dry before the second is applied).
Apply the adhesive evenly on the underside of the roof membrane (note: welding seam overlap area must be free of adhesive). Once the adhesive has been allowed to evaporate sufficiently (finger test), apply the membrane onto the substrate adhesive. Press down firmly on the membrane using a suitable pressure roller.
At locations which will be exposed to stresses immediately after bonding (edges), Sarnafil® G-types can also be heated externally by means of a heat source (Sarnafil® heat gun) then pressed down immediately using a suitable pressure roller.
Wet bonding procedure (Sarnafil® G Felt-types on substrates)
Spread adhesive evenly onto the substrate using an application roller. Do not apply the adhesive to an area greater than can be covered in one day. Allow the adhesive to dry completely. Apply a second coat of adhesive over the substrate. Apply the membrane onto the wet substrate adhesive. Press down firmly on the membrane using a suitable pressure roller.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Sarna Cleaner immediately after use. Hardened material can only be mechanically removed