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G410-EL Adhered Roof System - Sarnavap 5000E SA

G410-EL Adhered Roof System - Sarnavap 5000E SA

Sika Sarnafil Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Years adhered roof covering system.

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+44 (0)1707 394444 www.sarnafil.co.uk


PVC-P single-ply roofing system for adhered warm roofs.

System includes:

  • Sarnafil G410-EL waterproof membrane.
  • SarnaTherm G insulation.
  • Sarnavap 5000E SA vapour control layer.

- Waterproof membrane:

Sarnafil G membranes are manufactured using a state of the art extrusion coating process that eliminates shrinkage and plastic memory and produces a dynamically stable membrane. In the coating process, a glass fibre carrier is coated on both sides with liquid Plastisol, prior to the application of a lacquer coating on the upper surface and laser marking of the membrane surface for identification. The unique lacquer coating eliminates the need for biocides, provides the membrane with an easy to clean surface and prolongs the life of the membrane by reducing plasticiser loss.

The process enables between 2% and 5% of recycled material to be used in the production of new membranes.

- Insulation:

Rigid polyisocyanurate foam insulation boards to BS EN 13166; with mineral tissue facing. Available in uniform thickness or tapered.

- 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.


Certified by BBA, in their opinion, to have a "life expectancy in excess of 40 years" for exposed applications, with periodic maintenance as stated below.

"A planned maintenance cycle, including inspections by the Certificate holder at minimum intervals of five years, should be introduced if an extended service life is required. The Certificate holder can advise on methods of extending the service life. This could include the use of thicker membranes, specific maintenance requirements or localised replacement and repair."

Should the maintenance cycle not be followed Sarnafil G/S membranes have been given, by the BBA in their opinion, a life expectancy of "in excess of 35 years".


- Waterproof membrane:

In adhered applications Sarnafil G410-EL is adhered directly to the substrate or a suitable thermal insulation board with Sarnacol 2170 or Sarnacol 2172 spray adhesive. Laps are then hot air welded to form seams which are stronger than the membrane itself.

Installation is carried out by Sarnafil trained contractors.

- Insulation:

SarnaTherm G can be attached to the substrate (deck or suitable vapour control layer) by mechanically fastening with SBT tubes and SBIW-70x70 pressure plates, or by bonding to the Sarnavap 5000E SA using Sarnacol 2162cold bonding adhesive or Sika C250 spray applied adhesive.

A vapour control layer will be required when SarnaTherm G is used.

- Vapour control layer:

Sarnavap® 5000E SA is self-adhered to the substrate. Include Sarnafil Primer 600 to the substrate, and in addition metal deck may need de-greasing using Sarnafil T Prep.

General information


All Sarnafil systems are subject to a project specific specification (including design against wind uplift) to be completed by Sika Sarnafil. Please contact your local Sarnafil Technical Adviser


Sarnafil single point, insurance backed, guarantees provide cover for all Sarnafil products supplied by Sika and branded Sarnafil products supplied by Sarnafil Partner suppliers

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

Product range

Adhered Roof Systems / Warm Roof Systems

Specification data - Single layer sheet warm roof covering systems

Product Reference

G410-EL Adhered Roof System – Sarnavap 5000E SA


Not required

Primer 110

Primer 600

Spray Primer 610

Waterproof membrane



Sarnafil G410-EL







Copper Patina Green

Lead grey

Light grey

White RAL 9016 SR (solar reflective)






SarnaTherm G

SarnaTherm G Tapered



Vapour control layer



Sarnavap 5000E SA


Consult Sika Sarnafil for recommendations and details.




Double L rainwater outlets

G/S rainwater outlets

Sarnafil Constant Force post

Sarnafil heat weldable lightning conductor clips

Sarnafil Type T


Sarnaplast 2235

Sarnavap jointing tape

Standard product features

Waterproof membrane:

- Width:

2.0 m.

- Length of roll:

20 m (15 m for 1.8 mm thick membrane).

- Weight:

  • 1.2 mm thick: 1.50 kg/m².
  • 1.5 mm thick: 1.90 kg/m².
  • 1.8 mm thick: 2.30 kg/m².


  • Low thermal conductivity: 0.027 W/mK (thicknesses <80 mm), 0.026 W/mK (thicknesses from 80–120 mm) and 0.025 W/mK (thicknesses >120 mm).
  • Compressive strength >150 kPa at 10% deformation.
  • Typical Density of 32 kg/m³.
  • <5% smoke emission when tested to BS 5111-1.
  • CFC/ HCFC-free.
  • Zero ozone depletion potential (ODP).
  • Class O fire rating.

Vapour control layer:

- Material:

Bitumen with aluminium foil top side.

- Dimensions:

  • Thickness: 0.60 mm.
  • Width: 1.08 m.
  • Roll width: 1.08 m.
  • Roll length: 30 m.

- Weight:

0.7 kg/m².

- Colour:

Grey metallic.

- Performance:

Water vapour resistance: >9000 MNs/g.

Product Options

Waterproof membrane:

- Colour:

Available in standard colours. Other colours may be available, subject to a lead time and minimum order quantities.


  • Double L rainwater outlets: Insulated outlets.
  • G/S rainwater outlets: Injection moulded PVC outlets and scuppers.
  • Primer 110: Surface primer creating a key for Sarnaplast 2235.
  • Sarnafil Constant Force post: Cable-based fall arrest and restraint system.
  • Sarnafil Double L: High drainage capacity insulated rainwater outlet.
  • Sarnafil heat weldable lightning conductor clips.
  • Sarnametal: Galvanized metal sheet with Sarnafil G410-12EL factory laminated to it, for use in prefabricated flashings and drip details.
  • Sarnaplast 2235: Elastic one-part silicone sealant for sealing edges and perimeter upstand flashing terminations.
  • Sarnafil Primer 600: For use with Sarnavap 5000E SA VCL.
  • Sarnafil Primer 610: Spray applied primer for use with Sarnavap 5000E SA VCL.

Digital objects

Platform Compatible Version Certified to




Revit 2016











Download now from NBS National BIM Library

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate


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