Sarnafil® G 410-20 L
Polymeric PVC detailing membrane for roof waterproofing
Sarnafil® G 410-20 L (thickness 2.0 mm) is a multi-layer, synthetic roof waterproofing sheet based on polyvinyl chloride (PVC) with a glass non-woven inlay. It contains ultraviolet light stabilisers according to EN 13956 / GB 12952. Sarnafil® G 410-20 L is a hot-air weldable roof membrane, formulated for direct exposure and designed for use in all global climatic conditions.
- Proven performance over decades
- Lacquer coated surface
- Resistant to permanent UV exposure
- High dimensional stability from glass fleece inlay
- High water vapour permeability
- Resistant to all common environmental influences
- Resistant to micro-organisms
- Resistant to root penetration
- Hot-air weldable
- No open flame equipment required
Usage
Sarnafil® G 410-20 L may only be used by experienced professionals. Detailing membrane for the following Sarnafil system membranes:- Sarnafil® S 327 L
- Sarnafil® G 410 L Felt
Advantages
- Proven performance over decades
- Lacquer coated surface
- Resistant to permanent UV exposure
- High dimensional stability from glass fleece inlay
- High water vapour permeability
- Resistant to all common environmental 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.
| Packing unit | Refer to price list |
| Roll length | 15.00 m |
| Roll widths | 0.2 m, 2.00 m |
| Roll weights | 0.2 m = 8.1 kg, 2.00 m = 81 kg |
Refer to current price list for packaging variations.
Colour
| Surface | matt |
| Colours | |
| Top Surface | light grey (other colours on request) |
| Bottom surface | dark grey |
Product Details
ENVIRONMENTAL INFORMATION
- 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
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 13956 - Polymeric sheets for roof waterproofing
- GB 12952, Sarnafil® G 410-20 L, Test report No. RS19-21
- Included in BRANZ appraisal #619, Sarnafil Roof and Deck Membrane System, as detailing membrane
- BRANZ appraisal #902, Sarnafil Green Roof Waterproofing System, as complete membrane solution
- FLL standard, 2008 - Method of testing resistance to root damage to flexible sheets and coatings for roof planting
Product Declaration
EN 13956: Polymeric sheets for roof waterproofing
GB 12952 - Type G
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.
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
| 2.0 mm (-5 / +10 %) | (EN 1849-2) |
Overall Thickness
| 2.0 mm (-5 % / +10 %) | (GB 12952) |
Straightness
| ≤ 30 mm | (EN 1848-2) |
Flatness
| ≤ 10 mm | (EN 1848-2) |
Mass per Unit Area
| 2.57 kg/m² (-5 / +10 %) | (EN 1849-2) |
System Structure
The following products must be considered for use depending on roof design:
- Sarnafil® Metal Sheet
- Sarnabar®
- Sarnacol® 2170 (contact adhesive)
- Sarnacol® 2152 (2-component polyurethane adhesive)
Ancillary products: wide range of accessories is available e.g. prefabricated parts, roof drains, scuppers, walkway pads and decor profiles
Compatibility
Not compatible in direct contact with bitumen, tar, fat, oil, solvent containing materials and other plastic materials. Must be isolated from contact with building wrap systems (including building wraps with self-adhesive backings) and flashing tapes. Refer to Sika for detailing advice.
Insulated boards of expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane (PUR), polyisocyanurate (PIR) or phenolic foam (PF) should be isolated from the membrane either with integral aluminium or glass tissue facers, or with separation cloth such as Sarnafil S-Felt. Direct contact with any of the above materials could adversely affect the product properties.
Resistance to Impact
| hard substrate | ≥ 800 mm |
| soft substrate | ≥ 1250 mm |
| watertight | (GB/T20624.2) |
Resistance to Static Load
| soft substrate | ≥ 20 kg |
| rigid substrate | ≥ 20 kg |
| watertight | (GB/T328.25) |
Resistance to Root Penetration
| Pass | (EN 13948) |
Tensile Strength
| longitudinal (md)1) | ≥ 8.5 N/mm2 |
| transversal (cmd)2) | ≥ 8.5 N/mm2 |
| longitudinal (md)1) transversal (cmd)2) | ≥ 10 MPa ≥ 10 MPa |
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
Tear Strength
| ≥ 50 N/mm | (GB/T529) |
Joint Peel Resistance
| Failure mode: C, no failure of the joint | (EN 12316-2) |
| ≥ 3 N/mm | (GB/T328.21) |
Dimensional Stability
| longitudinal (md)1) | ≤ |0.2| % |
| transversal (cmd)2) | ≤ |0.1| % |
| ≤ 0,1 % | (GB/T328.13) |
1) md = machine direction
2) cmd = cross machine direction
Solar Reflectance
| 0,80 | (GJB 2502.2) |
Solar Reflectance Index
| 106 (white, initial) | (ASTM E 1980) |
Foldability at Low Temperature
| ≤ -25 °C | (EN 495-5) |
| no crack | (GB/T328.15) |
Water Absorption
| wet weight | ≤ 4 % |
| dry weight | ≥ -0.4 % |
Water Tightness
| Pass | (EN 19289) |
| watertight | (GB/T328.10) |
Resistance to UV Exposure
| Pass (> 5 000 h / grade 0) | (EN 1297) |
Resistance to Weathering
| tensile strength retention |
| |
| ≥ 90 % | |
| low temperature bend | no crack |
Retention of Properties after Heat Ageing
| tensile strength retention | ≥ 85 % |
| elongation retention | ≥ 80 % |
| low temperature bend | no crack |
Reaction to Fire
| Class E | (GB 8624 / EN13501-1) |
Application
Ambient Air Temperature
-20 °C min. / +60 °C max.
Substrate Temperature
-30 °C min. / +60 °C max.
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: Leister Varimat
SUBSTRATE QUALITY
The substrate surface must be uniform, smooth and free of any sharp protrusions or burrs, etc. Sarnafil® G 410-20 L must be separated from any incompatible substrates / materials by an effective separation layer to prevent accelerated ageing. The supporting layer must be compatible with 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.
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 a screw-driver (rounded edges) to ensure the integrity/completion of the weld. Any imperfections must be rectified by hot air welding.