Q&A_Attachment_1,_10_July_2018.pdf

Sarnafil® S 327-18EL 1/6

R o o fi n g

Roofing Product Data Sheet Edition 02.2015 Identification no: 02 09 01 01 201 0 180000 Version no. 03

Sarnafil® S 327-18EL Polymeric membrane for roof waterproofing

Product Description

Sarnafil® S 327-18EL (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 and flame retardant according to EN 13956.

Sarnafil® S 327-18EL is a hot air weldable roof membrane formulated for direct exposure and designed to use in all global climatic conditions. Sarnafil® S 327-18EL is produced with an integral polyester scrim reinforcement for high strength used within the Sarnafast spot fastening system and Sarnabar linear mechanically fastened system.

Sarnafil® S 327-18EL has a unique lacquer coating applied to the top of the membrane to resist staining from airborne dirt and pollutants.

Sarnafil® S 327-18EL has no built-in stress at the time of production and has a fully encapsulated reinforcement with no risk to delamination or water-wicking. Sarnafil® S 327-18EL can be produced also in a variety of colours in smaller quantities.

Uses Waterproofing membrane for:

Mechanically fastened roofs

Characteristics / Advantages

Outstanding resistance to weathering, including permanent UV irradiation

Excellent flexibility in cold temperatures

No built-in stress at the time of production

High dimensional stability

High water vapour permeability

Excellent weldability

No risk of delamination or water-wicking

Can be produced also in a variety of colours

Lacquer coated surface

Recyclable

Approval / Standards Sarnafil® S 327-18EL 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-3917 and provided with the CE-mark.

Reaction to fire according to EN 13501-1.

External fire performance tested according to ENV 1187 and classified according to EN 13501-5: BROOF(t1).

Official Quality Approvals and Agrement Certificates and approvals.

Monitoring and assessment by approved laboratories.

Quality Management system in accordance with EN ISO 9001/14001.

Sarnafil® S 327-18EL 2/6

Appearance / Colours Surface. matt

Colours:

Top surface: light grey (nearest RAL 7047) lead grey (Sika colour no. 9500) copper patina (Sika colour no. 6525) window grey (nearest RAL 7040) copper brown (nearest RAL 8004) azure blue (nearest RAL 5009) traffic white (nearest RAL 9016) pearl copper metallic (nearest RAL 8029) with hammer style embossing

Bottom surface: dark grey

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

Packaging Sarnafil® S 327-18EL standard rolls are wrapped individually in a blue PE-foil.

Packing unit: up to 27 rolls per pallet Roll length: 15.00 m Roll width: 2.00 m Roll weight: 66.00 kg

Storage Conditions / Shelf-Life

Rolls must be stored in a horizontal position on pallet and protected from direct sunlight, rain and snow. Product does not expire if correctly stored.

Sarnafil® S 327-18EL 3/6

Technical Data

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

Straightness 30 mm EN 1848-2

Flatness 10 mm EN 1848-2

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

Mass per unit area 2.2 kg/m² (- 5 % / + 10 %) EN 1849-2

Water tightness Pass EN 1928

Effects of liquid EN 1847 chemicals, including water

On request

External fire performance: ENV 1187

Part 1-4 BROOF(t1) 20°, > 20° EN 13501-5

Reaction to fire Class E EN ISO 11925-2, classification to EN 13501-1

Hail resistance: EN 13583 rigid substrate 25 m/s flexible substrate 33 m/s

Joint peel resistance 300 N/50 mm EN 12316-2

Joint shear resistance 800 N/50 mm EN 12317-2

Water vapour transmission properties = 15'000

EN 1931

Tensile strength, EN 12311-2 longitudinal (md)1) 1100 N/50 mm transversal (cmd)2) 1100 N/50 mm

Elongation, EN 12311-2 longitudinal (md)1) 12 % transversal (cmd)2) 12 %

Resistance to impact, EN 12691 hard substrate 700 mm soft substrate 1000 mm

Resistance to static load, EN 12730 soft substrate 20 kg rigid substrate 20 kg

Tear strength EN 12310-2 longitudinal (md)1) 200 N transversal (cmd)2) 200 N

Dimension stability, EN 1107-2 longitudinal (md)1) |0.3| % transversal (cmd)2) |0.2| %

Foldability at low temperature -25 °C

EN 495-5

UV exposure Pass (> 5000 h) EN 1297

1) md = machine direction

2) cmd = cross machine direction

Sarnafil® S 327-18EL 4/6

System Information

System Structure Wide range of accessories is available e.g. prefabricated parts, roof drains, scuppers, walkway pads and decor profiles.

The following materials are strongly recommended:

Sarnafil® G 410-15EL / S 327-15EL Sheet for detailing Sarnafil® S 327-18EL for Coverstrips Sarnafil® Metal Sheet Sarnabar S-Welding Cord Sarna Seam Cleaner Sarnacol® 2170 (contact adhesive)

Application Details

Substrate Quality The substrate surface must be uniform, smooth and free of any sharp protrusions or burrs, etc.

Sarnafil® S 327-18EL 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, e.g. expanded polystyrene (EPS) and extruded polystyrene (XPS) 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 before adhesive is applied.

Application Conditions / Limits

Temperature The use of Sarnafil® S 327-18EL membrane is limited to geographical locations with average monthly minimum temperatures of -50 °C.

Permanent ambient temperature during use is limited to +50 °C.

Compatibility Not compatible with direct contact to other plastics, e.g. EPS and XPS. Not resistant to tar, bitumen, oil and solvent containing materials.

Sarnafil® S 327-18EL 5/6

Installation Instructions

Installation Method / Tools

Installation procedure:

According to the valid installation instructions for Sarnafil® S 327EL-types system for mechanically fastened roofs.

Fixing Method, linear fasting (Sarnabar):

Unroll the Sarnafil® S 327-18EL membrane, overlap by 80 mm, weld immediately and to fix the substructure by means of Sarnabars. The type of fastening and the distance will be advised by Sika Ltd, Sika Sarnafil. The perimeter piece ends must be secured with the Sarnafil® Sarnabar End Washer. For protection fasten a piece of Sarnafil® under bar end and plate. Leave a 10 mm clearance between bar ends.

Do not fasten in hole nearest bar end. Cover the bar ends with a piece of Sarnafil® and weld. After installation the Sarnabars must immediately be made watertight with a Sarnafil® cover strip. At upstands and at all penetrations, the Sarnafil® S 327-18EL membrane must be secured with a Sarnabar. The 4 mm diameter S-Welding Cord protects the Sarnafil® S 327-18EL roof covering against tearing and peeling of by wind uplift.

Fixing Method, spot fasting (Sarnafast):

Sarnafil® S 327-18EL must always be installed at right angles to the deck direction. Sarnafil® S 327-18EL is fixed by means of the Sarnafast fasteners and barbed washers along the marked line, 35 mm from the edge of the membrane.

Sarnafil® S 327-18EL is overlapped by 120 mm. The spacing of the fasteners is in accordance with the project specific calculations made by Sika Ltd, Sika Sarnafil.

Welding Method:

Overlap seams are welded by electric hot air welding equipment, such as manual hot air welding machines and pressure rollers or automatic hot air welding machines with controlled hot air temperature.

Recommended type of equipment: Leister Triac PID for manual welding Sarnamatic 661plus for automatic welding

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 situation prior to welding. The effective width of welded overlaps by hot air should be minimum 20 mm.

The seams must be mechanically tested with screw driver to ensure the integrity / completion of the weld. Any imperfections must be rectified by hot air welding.

Notes on Installation / Limits

Installation works must be carried out only by Registered Sarnafil Contractors.

Temperature limits for the installation of the membrane:

Substrate temperature: -30 °C min. / +60 °C max.

Ambient temperature: -20 °C min. / +60 °C max.

Installation of some ancillary products, e.g. contact adhesives / cleaners is limited to temperatures above +5 °C. Please observe information given by Product Data Sheets.

Special measures may be compulsory for installation below +5 °C ambient temperature due to safety requirements in accordance with national regulations.

Sarnafil® S 327-18EL 6/6

R o o fi n g

SIKA LIMITED

Head Office ∙ Watchmead ∙ Welwyn Garden City Hertfordshire ∙ AL7 1BQ ∙ United Kingdom Phone: +44 1 707 394444 ∙ Fax: +44 1 707 329129 ∙ www.sika.co.uk

Value Base All technical data stated in this Product Data Sheet are based on laboratory tests.

Actual measured data may vary due to circumstances beyond our control.

Local Restrictions Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields.

Ecology, Health and Safety Information

The product does not fall within the EU-regulation of hazardous goods.

As a result, a material safety data sheet following EU-Guideline 91/155 EWG is not needed to bring the product to the market, transport or use it.

The product does not damage the environment when used as specified.

Protective Measures Fresh air ventilation must be ensured, when working (welding) in closed rooms.

Regulatory safety requirements must be observed.

Transportation Class The product is not classified as hazardous good for transport.

Disposal The material is recyclable. Any disposal must be in accordance with regulatory safety requirements.

Legal Note All data in our product information are based on our current knowledge and experience. They do not release users from careful testing of the application and strict observation of the relevant processing regulations because of the wide range of possible influences during the application and use of our products.

Legally valid assurances of specific characteristics or suitability for special purposes of application other than those provided in our documentation for the specific product cannot be inferred from our information. Any protective rights or existing laws and provisions must be followed by the recipient or processor of our products at their own responsibility. Moreover our general terms and conditions of sale and guarantee are valid.