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
- Recyclable
Usage
Sarnafil® G 410-20 L may only be used by experienced professionals. Waterproofing detailing membrane for:- Exposed flat roofs (Sarnafil® S 327 L or Sarnafil® G 410 L Felt)
- Ballasted roofs e.g. Green roofs, Utility roofs, Inverted roofs, Gravel roofs (Sarnafil® G 476)
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
- Recyclable
Packaging
Standard rolls are wrapped individually in a blue PE-foil.
| Packing unit | Refer to price list |
| Roll length | 15,00 m |
| Roll width | 2,00 m |
| Roll weight | 81 kg |
Refer to current price list for packaging variations.
Colour
| Surface | matt |
| Colours | |
| Top Surface | White, Light Grey (other colours on request) |
| Bottom surface | Dark grey |
Product Details
SUSTAINABILITY
- 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 / CERTIFICATES
- 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
Product declaration
EN 13956: Polymeric sheets for roof waterproofing
GB 12952 - Type G
Composition
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 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®
- Sarna Seam Cleaner
- Sarnacol® 2170 (contact adhesive)
- Sarna Cleaner
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, e.g. expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane (PUR), polyisocyanurate (PIR) or phenolic foam (PF). These 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 loading
| 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 (White only) | (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 % |
Watertightness
| 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: Sarnamatic 681
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 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.
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.