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Sika-Trocal SGmA Ballasted Roof System S-Vap 5000E SA

PVC waterproof system for ballasted roofs.

System includes:

  • Ballast surface protection (supplied by others).
  • S-Felt T 300 or Sika-Trocal® SBV upper protection layer.
  • Sika-Trocal® SGmA waterproof membrane.
  • Polyisocyanurate foam board insulation.
  • S-Vap 5000E SA vapour control layer.

- Upper protective layer:

S-Felt T 300:

A separation, levelling and protection layer made of polyester (PES).

- Sika-Trocal® SBV:

A protection and separation layer made of polyester (PES) fleece with a PVC-P coating on one side. The fleece free edge is 5-15 mm wide.

- Waterproof membrane:

A PVC membrane, with glass fibre reinforcement, for use in ballasted single-ply waterproof systems. The membrane contains biocides and is highly resistant to ageing, to industrial pollutants and to the bacteria that flourish in the moist layer of dirt present immediately above the membrane in ballasted roofs. It requires no maintenance throughout its service life.

The membrane is restrained by the weight of ballast, although under timber decking additional restraint such as Sika-Trocal metal discs or proprietary pressure plates may be required.

Laps are sealed with THF welding agent, with hot air sealing used at details.

- Vapour control layer:

A 0.60 mm thick, high-performance, self-adhesive vapour control layer, manufactured from polymer modified bitumen, with glass fibre reinforcement and aluminium foil top layer. Suitable for use in high humidity environments, green roofing systems, loose-laid ballasted warm roof systems and all adhered and mechanically fastened systems. Can be used as a temporary waterproof layer for up to 4 weeks, in strict accordance with the product data sheet.

General information

Uniclass 2015

Ss_30_40_30_80 Single layer sheet warm roof covering systemsPrimary


J42/10 Warm deck roof covering

J42/110 Warm deck roof covering

Specification data - Single layer sheet warm roof covering systems

Product Reference

Sika-Trocal SGmA Ballasted Roof System S-Vap 5000E SA

Upper protection layer

S-Felt T 300

Sika-Trocal SBV


Sika-Trocal SGmA


1.5 mm

2.0 mm




Polyisocyanurate foam board

Vapour control layer

S-Vap 5000E SA


Primer 600

Sika-Trocal injection moulded corners

Sika-Trocal metal

Standard product features

Vapour control layer:

- Material:

Bitumen with aluminium foil top side.

- Dimensions:

  • Thickness: 0.60 mm.
  • Width: 1.38 m.
  • Roll width: 1.3 m.
  • Roll length: 30 m.

- Weight:

0.7 kg/m².

- Colour:

Grey metallic.

- Performance:

Water vapour resistance: >9000 MNs/g.

Product Options

Waterproof membrane:

- Dimensions:

1.5 mm thick membrane.

  • Width: 2.0 m.
  • Mass: 1.9 kg/m².

2.0 mm thick membrane.

  • Width: 2.0 m.
  • Mass: 2.5 kg/m².


  • Sika-Trocal injection moulded corners: Pre-formed pieces for forming corners.
  • Sika-Trocal metal: 0.6 mm thick galvanized steel coated on the upper side with 0.8 mm thick layer of plasticized PVC. Coloured to match the waterproof membrane. Used to produce perimeter flashings, connections and fixings.

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