Sarnacol®-2142 S

• Factory Mutual (FM) Certificate

Polyurethane moisture curing

9 months from date of production.

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.

~1,00 kg/l (+20 °C)

Liquid

Incompatible substrates:

• Single ply waterproofing membranes without a felt backing
• Talcum coated bituminous sheets

+5 °C min

+5 °C min

~1–5 hours. Setting is prolonged in low temperatures and accelerated in high temperatures. Final strength is achieved after ~1 week. These times can be affected by ambient conditions.

Consumption depends on the roughness and absorbency of the substrate.

Recommended consumption of Sarnacol®-2142 S on different substrates (+20 °C / 50 % r.h. )

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.

The substrate must offer sufficient strength and adhesion to resist the forces generated by wind suction.

The substrate must be firm, clean, dry or slightly moist, free from oil, grease, dust, stripping agents, standing water, bitumen residue and loose friable particles.

Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

General information

Sarnacol®-2142 S must be stirred carefully before use. Keep adhesive container closed whenever adhesive is not being used to prevent surface skinning.

To improve the workability of the adhesive at low temperatures, the closed container can be placed in warm water (max. +40 °C).

Adhesive residue on Sarnafil® G Felt must be cleaned with Sarna Cleaner.
Adhesive residue on Sarnafil® T Felt, must be cleaned with Sarnafil® T Clean.

General bonding procedure - Wet bonding
The adhesive is spread evenly onto the substrate by using a synthetic application roller directly from the container and ensuring there are no lumps in the applied layers.

Bonding to PVC Membranes

Apply adhesive onto the substrate. Do not apply the adhesive to an area greater than can be covered within 15 minutes. Do not pour out the adhesive and roll in a second stage. Once the adhesive surface has become 'tacky', apply the membrane onto the adhesive. Press down firmly on the membrane using a suitable pressure roller such as a water-filled, or heavy steel roller 40 – 50 kg.

Bonding to EPS insulation board
Apply adhesive onto the substrate in a thin layer (~250 g/m²).

Bonding to very absorbent substrates (Mineral fibre boards)
Apply 2 coats of adhesive. The first coat ~800 g/m². Allow the adhesive to dry completely. Apply a second coat ~400 g/m² max.

Clean all tools and application equipment with Sarna Cleaner or Sarnafil® T immediately after use. Hardened material can only be mechanically removed.