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Sarnafil® S 327-18 L (CH_CE)

POLYMERIC MEMBRANE FOR MECHANICALLY FASTENED ROOF WATERPROOFING

Sarnafil® S 327-18 L (CH_CE) (thickness 1.8 mm) is a polyester reinforced, multi-layer, synthetic roof waterproofing sheet based on premium-quality polyvinyl chloride (PVC) containing ultraviolet light stabilizers according to EN 13956.
Sarnafil® S 327-18 L (CH_CE) is a hot air weldable roof membrane, formulated for direct exposure. Suitable for use in hot and tropical climatic conditions.

▪ Proven performance over decades ▪ Resistant to permanent UV irradiation ▪ Resistant to permanent wind exposure ▪ Resistant against impact load and hail ▪ Resistant to all common environmental influences ▪ Hot air welding without use of open flames ▪ High water vapour permeability ▪ Recyclable  
Sarnafil® S 327-18 L (CH_CE)
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Usage

Waterproofing membrane for: 
  • Mechanically fastened roofing systems

Advantages

▪ Proven performance over decades ▪ Resistant to permanent UV irradiation ▪ Resistant to permanent wind exposure ▪ Resistant against impact load and hail ▪ Resistant to all common environmental influences ▪ Hot air welding without use of open flames ▪ High water vapour permeability ▪ Recyclable  

Packaging

Sarnafil® S 327-18 L (CH_CE) standard rolls are wrapped individually in a blue PE-foil.

Packing unitSee price list
Roll length15.00 m
Roll width2.00 m
Roll weight66.00 kg

Colour

Surface

Matt

Colours

Top surface

Light grey (nearest RAL 7047)

Bottom surfaceDark grey

Top surface of sheet in other colours available on request, subject to minimum order quantities.

Product Details

Sustainability / Certifications / Approvals

SUSTAINABILITY

  • Conformity with LEED v4 MRc 2 (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations
  • Conformity with LEED v4 MRc 3 (Option 2): Building Product Disclosure and Optimization - Sourcing of Raw Materials
  • Conformity with LEED v4 MRc 4 (Option 2): Building Product Disclosure and Optimization - Material Ingredients
  • Conformity with LEED v2009 MRc 4 (Option 2): Recycled Content

APPROVALS / CERTIFICATES

Sarnafil® S 327-18 L (CH_CE) is designed and manufactured to meet most international recognised standards.

  • Polymeric sheets for roof waterproofing according to EN 13956 certified by notified body 1213-CPD-4920 and provided with the CE-mark.
  • Reaction to fire according to EN 13501-1. Class E.
  • External fire performance tested according to ENV 1187 and classified according to EN 13501-5: BROOF(t1).

 
Product Information

Shelf life

5 years from date of production in unopened, undamaged and original packaging.

Storage conditions

Rolls must be stored between +5 °C and +30 °C in a horizontal position on pallet, protected from direct sunlight, rain and snow. Do not stack pallets of rolls or any other material during transport or storage.

Product Declaration

EN 13956

Visible Defects

Pass(EN 1850-2)

Length

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

Width

2 m (-0.5 % / +1 %)(EN 1848-2)

Effective Thickness

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

Straightness

≤  30 mm(EN 1848-2)

Flatness

≤ 10 mm(EN 1848-2)

Mass per unit area

2.2 kg/m² (-5 % / +10 %)(EN 1849-2)
System information

System Structure

Wide range of accessories is available example prefabricated parts, roof drains, scuppers, walkway pads and decor profiles.
The following accessories shall be used:

  • Sarnafil® G 410-15 Sheet for detailing
  • Sarnafil® Metal Sheet PVC
  • Sarnabar® / Sarnafast®
  • S-Welding Cord PVC
  • Sarnacol® 2170 (contact adhesive)
  • Sarna Seam Cleaner
  • Sarna Cleaner

Compatibility

Not compatible with direct contact to other plastics, example EPS, XPS, PUR, PIR or PF. Not resistant to tar, bitumen, oil and solvent containing materials.
Technical Information

Resistance to Impact

Hard substrate≥  900 mm
Soft substrate≥  1250 mm

Hail Resistance

Rigid substrate≥  32 m/s
Flexible substrate≥ 37 m/s

Resistance to Static Load

Soft substrate≥ 20 kg
Rigid substrate≥ 20 kg

Tensile Strength

Longitudinal (md)1)≥ 1100 N/50 mm
Transversal (cmd)2)≥ 1100 N/50 mm

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

Elongation

Longitudinal (md)1)≥ 12 %
Transversal (cmd)2)≥ 12 %

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

Dimensional Stability

Longitudinal (md)1)≤ 0.3 %
Transversal (cmd)2)≤ 0.2 %

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

Tear Strength

Longitudinal (md)1)

≥ 200 N

Transversal (cmd)2)

≥ 200 N

1) md = machine direction

2) cmd = cross machine direction

Joint Peel Resistance

no failure of the joint(EN 12316-2)

Joint Shear Resistance

≥ 800 N/50 mm(EN 12317-2)

Foldability at Low Temperature

≤ -25 °C(EN 495-5)

External Fire Performance

BROOF(t1) < 20°

(EN 1187)

(EN 13501-5)

Reaction to Fire

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

Effect of Liquid Chemicals, Including Water

On request(EN 1847)

Resistance to UV Exposure

Pass (> 5000 h / grade 0)(EN 1297)

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

SUBSTRATE QUALITY

The substrate surface must be uniform, smooth and free of any sharp protrusions or burrs, etc.
Sarnafil® S 327-18 L (CH_CE) must be separated from any incompatible substrates by an effective separation layer to prevent accelerated ageing. Prevent from direct contact with bitumen, tar, fat, oil, solvent containing material and direct contact to other plastic materials, example expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane (PUR), polyisocyanurate (PIR) or phenolic foam (PF) as this could adversely affect the product properties.
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 works to be carried out only by Sika instructed contractors for roofing.
Installation of some ancillary products, example contact adhesives / cleaners is limited to temperatures above +5 °C. Please observe information given by Product Data Sheets.
 

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