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Application

For problematic detailing when using Sarnafil® single ply polyvinyl chloride (PVC) and filled polyolefin (FPO) roof membranes. Can be used with both cold and warm roof build-ups.

Description

Liquid detailing system designed to overcome problematic detailing when using Sarnafil® single ply polyvinyl chloride (PVC) and filled polyolefin (FPO) roof membranes.

Components:

  • Sikalastic® 621 TC: Cold-applied, highly elastic, UV-stable, single component, moisture-triggered polyurethane two-layer system designed for easy application and durability.
  • Sarna Cleaner: Cleaner for Sarnafil® G/ S membranes.
  • Sika® Concrete Primer: Two-component primer for consistent and durable adhesion between Sikalastic® 621 TC and cementitious substrates.
  • Sika® Reactivation Primer: Single component primer for the reactivation of Sikalastic® 621 TC.
  • Sika® Reemat Premium: Glass fibre mat reinforcement for Sikalastic® 621 TC.
  • Sika® Flexistrip: Preformed strip sealant reel on a paper release liner for use with Sikalastic® 621 TC.

Applications:

For problematic detailing when using Sarnafil® single ply polyvinyl chloride (PVC) and filled polyolefin (FPO) roof membranes. Can be used with both cold and warm roof build-ups.

General information
Specification data - Liquid-applied cold roof covering systems
Product Reference

Sarnafil® Liquid Detailing System

Cleaner

Sarna Cleaner

Primer

Sika® Concrete Primer

Waterproofing coating -
Type

Sikalastic® 621 TC

Colour

Shale grey (nearest RAL 8500)

Slate grey (nearest RAL 7015)

Reinforcement

Sika® Reemat Premium

Reactivation primer

Sika® Reactivation Primer

Sealant

Sika® Flexistrip

Standard product features

Sikalastic® 621 TC:

  • Material: Single component, moisture-triggered aliphatic polyurethane.
  • Density (to BS EN ISO 2811-1): 1.44 kg/L.
  • Solid content: 81.3% by volume/ 87.4% by weight (approximate).
  • Flash point: 62°C.
  • Service temperature: -30°C to 80°C.
  • Application: Brush or roller.
  • Application temperature: Ambient: 5–35°C; substrate: 5–60°C.
  • External fire performance: BROOF(t1–5).

Sarna Cleaner:

  • Material: Mixture of high volatile solvents.
  • Consistency: Liquid.
  • Colour: Transparent.
  • Density: 0.9 kg/L.
  • Application temperature: Ambient: ˃-30°C; substrate: ˃-20°C.

Sika® Concrete Primer:

  • Material: Two component solvent based polyurea.
  • Appearance/ colour: Colourless to pale yellow.
  • Density: 1.02 kg/L.
  • Application: Brush or roller.
  • Application temperature: 5–30°C.

Sika® Reactivation Primer:

  • Material: Solvent borne polyurethane.
  • Form: Low viscosity liquid.
  • Appearance/ colour: Clear.
  • Density: 1.05 kg/L.
  • Flash point: 42°C.
  • Application: Brush or roller.
  • Application temperature: 5–30°C.
  • Waiting time/ overcoating: At 20°C: 3–4 hours; at 5°C: 5–6 hours.

Sika® Reemat Premium:

  • Material: Random glass fibre matting.
  • Appearance/ colour: White.
  • Roll size (l x w): 150 x 0.3 m.
  • Weight: 225 g/m².

Sika® Flexistrip:

  • Colour: Off-white.
  • Width: 50 mm.
  • Length: 15 m.
  • Application temperature: ˃5°C.