Sarnafil® G 410-20 L Felt
Polymeric membrane for adhered roof waterproofing
Sarnafil® G 410-20 L Felt (thickness 2.0 mm) is a multi-layer, synthetic roof waterproofing sheet based on polyvinyl chloride (PVC) with a glass non-woven inlay and polyester fleece backing. It contains ultraviolet light stabilisers according to EN 13956 / GB 12952. Sarnafil® G 410-20 L Felt 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
- Fast installation with Sarnacol® adhesives
- High dimensional stability from glass fleece inlay
- High water vapour permeability
- Resistant to all common environmental influences
- Hot-air weldable
- No open flame equipment required
- Recyclable
Usage
Sarnafil® G 410-20 L Felt may only be used by experienced professionals. Waterproofing membrane for:- Fully bonded, exposed roofs
Advantages
- Proven performance over decades
- Lacquer coated surface
- Resistant to permanent UV exposure
- Fast installation with Sarnacol® adhesives
- High dimensional stability from glass fleece inlay
- High water vapour permeability
- Resistant to all common environmental influences
- Hot-air weldable
- No open flame equipment required
- Recyclable
Packaging
Standard rolls are wrapped individually in a blue PE-foil.
| Roll size | |
| Length | 15.00 m |
| Width | 2.00 m |
| Weight | 84.00 kg |
Refer to current price list for packaging variations.
Colour
| Surface | matt |
| Colours | |
| Top Surface | white |
| Bottom surface | dark grey |
Top surface colour available in other colours subject to minimum order quantities.
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 Felt, Test report No. RS19-21
- Quality Management System in accordance to EN ISO 9001/14001
- Listed under Hong Kong Green Building Council (HKGBC) & The Construction Industry Council (CIC) ECO-Product Directory
Product Declaration
EN 13956 - Polymeric sheets for roof waterproofing
GB 12952 - Type GL
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. 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
| 15.00 m (-0 / +5 %) | (EN 1848-2) |
Width
| 2.00 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
| 2.75 kg/m² (-5 / +10 %) | (EN 1849-2) |
System Structure
The following products must be considered for use depending on roof design:
- Sarnafil® G 410-12 L sheet for detailing
- Sarnafil® Metal Sheet PVC
- Sarnabar® or S-U Bar
- Sarna Seam Cleaner
- Sarnacol® 2170 / 2142 / 2152 Adhesive
- Sarna Cleaner
Ancillary Products:
Prefabricated parts, roof drains, scuppers, walkway pad, decor profiles, protection sheets.
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 | ≥ 1500 mm |
| watertight | (GB/T20624.2) |
Hail Resistance
| rigid substrate | ≥ 17 m/s |
| flexible substrate | ≥ 25 m/s |
Resistance to Static Load
| soft substrate | ≥ 20 kg |
| rigid substrate | ≥ 20 kg |
| watertight | (GB/T328.25) |
Tensile Strength
| longitudinal (md)1) | ≥ 650 N/50 mm |
| transversal (cmd)2) | ≥ 650 N/50 mm |
| ≥ 120 N/cm | (GB/T328.9) |
1) md = machine direction
2) cmd = cross machine direction
Elongation
| longitudinal (md)1) | ≥ 45 % |
| transversal (cmd)2) | ≥ 45 % |
| ≥ 100 % | (GB/T328.9) |
1) md = machine direction
2) cmd = cross machine direction
Tear Strength
| ≥ 220 N | (GB/T328.19) |
Joint Peel Resistance
| Failure mode: C, no failure of the joint | (EN 12316-2) |
| ≥ 3 N/mm | (GB/T328.21) |
Joint Shear Resistance
| ≥ 600 N/50 mm | (EN 12317-2) |
Dimensional Stability
| longitudinal (md)1) | ≤ |0.2| % |
| transversal (cmd)2) | ≤ |0.2| % |
| ≤ 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 1928) |
| Watertight | (GB/T328.10) |
Effect of Liquid Chemicals, Including Water
| Tensile strength retention | ≥ 85 % |
| Elongation retention | ≥ 80 % |
| Low temperature bend | no crack |
Resistance to UV Exposure
| Pass (> 5000 h / grade 0) | (EN 1297) |
Retention of Properties after Heat Ageing
| Tensile strength retention | ≥ 85 % |
| Elongation retention | ≥ 80 % |
| Low temperature bend | no crack |
Artificial Ageing
| Tensile strength retention | ≥ 85 % |
| Elongation retention | ≥ 80 % |
| Low temperature bend | no crack |
Reaction to Fire
| Class E | (EN ISO 11925-2, classification to EN 13501-1) |
| E | (GB 8624 / EN 13501-1) |
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
- Semi-automatic: Leister Triac Drive
- Automatic: Sarnamatic 681/ 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 Felt 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.
Fully bonded roof surfaces and detailing
The roof waterproofing membrane is bonded to the substrate using a Sarnacol® adhesive. The type of adhesive is selected based on the type and slope of substrate. Refer to the individual Sarnacol® adhesive Product Data Sheet.
Hot welding method
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.
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.