Product Data Sheet Show all documents

Sarnafil® G 476-15 (CN_GB)

Polymeric membrane for ballasted roof waterproofing

Sarnafil® G 476-15 (CN_GB) (thickness 1,5 mm) is a multi-layer, synthetic roof waterproofing membrane based on polyvinyl chloride (PVC) with an inlay of non-woven glass fibre. Sarnafil® G 476-15 (CN_GB) is a hot-air weldable roof membrane, formulated and designed for use in all global climatic conditions.

  • Proven performance over decades
  • High dimensional stability from glass fleece inlay
  • High water vapour permeability
  • Resistant to all common environmental influences
  • Resistant to mechanical influences
  • Resistant to micro-organisms
  • Resistant to root penetration
  • Hot-air weldable
  • No open flame equipment required
Product Data Sheet Show all documents

Usage

Waterproofing membrane for ballasted roofs:
  • Roof gardens (intensive / extensive)
  • Utility roofs
  • Inverted roofs
Waterproofing membrane for applications with a ballasted protection layer:
  • Balconies and terraces
  • Plaza decks
  • Planters
  • Split slab applications
  • Concrete slabs
 

    Advantages

    • Proven performance over decades
    • High dimensional stability from glass fleece inlay
    • High water vapour permeability
    • Resistant to all common environmental influences
    • Resistant to mechanical influences
    • Resistant to micro-organisms
    • Resistant to root penetration
    • Hot-air weldable
    • No open flame equipment required

    Packaging

    Standard rolls are wrapped individually in a blue PE-foil.

    Roll length

    20,00 m

    Roll width

    2,00 m

    Colour

    Surface

    matt

    Colours

    Top Surface

    orange

    Bottom surfacedark grey

    Product Details

    Sustainability / Certifications / Approvals

    APPROVALS / STANDARDS

    • CE Marking and Declaration of Performance to EN 13956 - Polymeric sheets for roof waterproofing
    Product Information

    Chemical base

    Polyvinyl Chloride (PVC)

    Shelf life

    5 years from date of production.

    Storage conditions

    Product must be stored in original unopened and undamaged packaging in dry conditions and temperatures between +5 °C and +30 °C. Store in a horizontal position. Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage. Always refer to packaging.

    Product Declaration

    EN 13956: Polymeric sheets for roof waterproofing

    GB 12952 - Type G

    Visible Defects

    Pass

    (EN 1850-2)

    Length

    20 m (-0 / +5 %)(EN 1848-2)

    Width

    2 m (-0,5 / +1 %)(EN 1848-2)

    Effective Thickness

    1,5 mm (-5 / +10 %)(EN 1849-2)

    Straightness

    ≤ 30 mm

    		(EN 1848-2)

    Flatness

    ≤ 10 mm(EN 1848-2)

    Mass per unit area

    1.95 kg/m2 (-5 % / +10 %)

    (EN 1849-2)
    System information

    System Structure

    The following products must be considered for use depending on roof design:

    • Sarnafil® G 410-15 Sheet for detailing
    • Sarnafil® Metal Sheet
    • Sarnabar
    • S-Welding Cord
    • Sarna Seam Cleaner
    • Sarna Cleaner
    • S-Felt

    Ancillary products: wide range of accessories is available e.g. prefabricated parts, roof drains, scuppers, protection sheets and separation layers.

    Compatibility

    Not compatible in direct contact with bitumen, tar, fat, oil, solvent containing materials and other plastic materials, e.g. expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane (PUR), polyisocyanurate (PIR) or phenolic foam (PF). These materials could adversely affect the product properties.
    Technical Information

    Resistance to Impact

    hard substrate

    ≥ 500 mm

    soft substrate

    ≥ 1000 mm

    Resistance to Static Load

    soft substrate

    ≥ 20 kg

    rigid substrate

    ≥ 20 kg

    Resistance to Root Penetration

    Pass(EN 13948)
    Pass

    (JC/T1075)

    Pass

    (FLL)

    Tensile Strength

    longitudinal (md)1)

    ≥ 8,5 N/mm2

    transversal (cmd)2)

    ≥ 8,5 N/mm2

    1) md =      machine direction
    2) cmd =    cross machine direction

    Elongation

    longitudinal (md)1)≥ 180 %
    transversal (cmd)2)≥ 180 %

    1) md =      machine direction
    2) cmd =    cross machine direction

    Dimensional Stability

    longitudinal (md)1)

    B≤  |0,2| %

    transversal (cmd)2)

    D≤  |0,2| %

    1) md = machine direction
    2) cmd = cross machine direction

    Joint Shear Resistance

    ≥  500 N/50 mm

    (EN 12317-2)

    Foldability at Low Temperature

    ≤  -25 °C

    (EN 495-5)

    Reaction to Fire

    Class E

    (EN ISO 11925-2, classification to EN 13501-1)

    Watertightness

    pass

    (EN 1928)

    Application

    Application Information

    Ambient Air Temperature

    -20 °C min. / +60 °C max.

    Substrate Temperature

    -30 °C min. / +60 °C max.
    Application steps

    EQUIPMENT

    Hot welding overlap seams
    Electric hot-air welding equipment, such as hand held manual hot air welding equipment and pressure rollers or automatic hot air welding machines with controlled hot-air temperature capability of a minimum +600 °C.
    Recommended type of equipment:

    • Manual: Leister Triac
    • Automatic: Sarnamatic 681

    SUBSTRATE QUALITY

    • The supporting structure must be of sufficient structural strength to apply all new and existing layers of the roof build-up. Complete roof system must be designed and secured against wind uplift loadings.
    • The substrate surface must be uniform, smooth and free of any sharp protrusions or burrs, etc.
    • Sarnafil® G 476-15 (CN_GB) must be separated from any incompatible substrates / materials by an effective separation layer to prevent accelerated ageing.
    • The supporting layer must be compatible to the membrane, solvent resistant, clean, dry and free of grease and dust.
    • Metal sheets must be degreased with Sarna Cleaner before adhesive is applied.

    APPLICATION

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

    Fixing method- General

    The waterproofing membrane is installed by loose laying flat without creases and overlapping by 80 mm. It is then covered with ballast or a protection layer immediately after laying and seam welding.

    Balconies, terraces and plaza decks

    • A protective sheet of Sarnafil® Protective Sheet or S-Felt Type GK must be installed on top of the Sarnafil® G 476-15 (CN_GB) membrane.
    • The ballasted protective layer (slabs, tiles, etc) must be installed on top of a drainage layer (chippings, gravel, elevated beds or similar).

    Flashings
    Refer to standard details in Application Manual                                                                                             

    Hot welding overlap seams
    Overlap seams must be welded by electric hot-welding equipment. Welding parameters including temperature, machine speed, air flow, pressure and machine settings must be evaluated, adapted and checked on site according to the type of equipment and the climatic conditions prior to welding. The effective width of welded overlaps by hot-air must be a minimum 20 mm.

    Testing overlap seams
    The seams must be mechanically tested with screw-driver (rounded edges) to ensure the integrity/completion of the weld. Any imperfections must be rectified by hot-air welding.

    Documents