Sarnafil® G 410-20 EL Felt
Sarnafil® G 410-20 EL Felt is a PVC, multi-layer, fully adhered, lacquered matt finish, weldable sheet membrane with a glass fibre reinforcing inlay and polyester fleece backing for roof waterproofing. Contains ultraviolet light stabilizers and flame retardants to provide a colour stable, fast installation, low maintenance and durable membrane. Thickness 2,0 mm.
- Proven performance over decades
- Lacquer coated surface
- Various colours available
- Fast installation with Sarnacol® adhesives
- High reflectance properties for excellent cool roofing characteristics (relevant only for colour ~RAL 9016 SR).
- Resistant to UV exposure
- High dimensional stability from glass fleece inlay
- High water vapour permeability
- Resistant to all common environmental influences
- Felt backing compatible with old bitumen surfaces
- Heat weldable
Usage
- Fully bonded, roof waterproofing membrane for exposed roofs
- Enhancement of solar reflection of existing PVC roofs (~RAL 9016 SR)
Advantages
- Proven performance over decades
- Lacquer coated surface
- Various colours available
- Fast installation with Sarnacol® adhesives
- High reflectance properties for excellent cool roofing characteristics (relevant only for colour ~RAL 9016 SR).
- Resistant to UV exposure
- High dimensional stability from glass fleece inlay
- High water vapour permeability
- Resistant to all common environmental influences
- Felt backing compatible with old bitumen surfaces
- Heat weldable
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 | light grey (nearest RAL 7047) lead grey (nearest RAL 7012) window grey (nearest RAL 7040) copper brown (nearest RAL 8004) copper patina (Sika colour no. 6525) traffic white, solar reflective (RAL 9016 SR) |
| Bottom surface | dark grey |
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 SSc 5 (Option 1): Heat Island Reduction - Roof (only traffic white (SR))
- 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 SSc 7.2 (Option 1): Heat Island Effect - Roof (~RAL 9016 SR)
- BRE Environmental Product Declaration (EPD)
APPROVALS / STANDARDS
-
CE Marking and Declaration of Performance to EN 13956 - Polymeric sheets for roof waterproofing
-
FM Approved, Certificate of Compliance, Sarnafil® G 410 EL Felt, Approval Identification No. 3047304
-
External fire performance tested according to ENV 1187 and classified according to EN 13501-5: BROOF (t4)
Product Declaration
EN 13956 - Polymeric sheets for roof waterproofing
Chemical Base
Polyvinyl Chloride (PVC)
Shelf Life
5 years from date of production
Storage Conditions
Product must be stored in original unopened and undamaged sealed 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) |
Straightness
≤ 30 mm | (EN 1848-2) |
Flatness
≤ 10 mm | (EN 1848-2) |
Mass per unit area
| 2,8 kg/m² (-5 % / +10 %) | (EN 1849-2) |
System Structure
The following products must be considered for use depending on roof design:
- Sarnafil® G 410-20EL sheet for detailing
- Sarnafil® Metal Sheet
- Sarnabar®
- Sarna Seam Cleaner
- Sarnacol® 2170 / 2172 Spray (contact adhesive)
- Sarna Cleaner
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 | ≥ 1000 mm |
soft substrate | ≥ 1750 mm |
Hail Resistance
rigid substrate | ≥ 28 m/s |
flexible substrate | ≥ 36 m/s |
Resistance to Static Load
soft substrate | ≥ 20 kg |
rigid substrate | ≥ 20 kg |
Tensile Strength
longitudinal (md)1) | ≥ 750 N/50 mm |
transversal (cmd)2) | ≥ 750 N/50 mm |
1) md = machine direction
2) cmd = cross machine direction
Elongation
longitudinal (md)1) | ≥ 65 % |
transversal (cmd)2) | ≥ 65 % |
1) md = machine direction
2) cmd = cross machine direction
Joint Peel Resistance
| Failure mode: C, no failure of the joint | (EN 12316-2) |
Joint Shear Resistance
≥ 600 N/50 mm | (EN 12317-2) |
Dimensional Stability
| longitudinal (md)1) | ≤ |0,2| % |
| transversal (cmd)2) | ≤ |0,1| % |
1) md = machine direction
2) cmd = cross machine direction
Solar Reflectance Index
| Colour | Initial | 3-years aged | Test Institute |
| RAL 9016 SR | 111 | 99 | CRRC |
| RAL 9016 | 106 | 77 | CRRC |
| Nr. 9525 | 55 | - | Sika |
| Nr. 9500 | 4 | - | Sika |
CRRC tested products are listed in Cool Roof Rating Council (CRRC) product data base.
Foldability at Low Temperature
≤ -25°C | (EN 495-5) |
Water Tightness
Pass | (EN 1928) |
Effect of Liquid Chemicals, Including Water
| Contact Sika Technical Services for additional information | (EN 1847) |
UV Exposure
Pass (> 5’000 h / grade 0) | (EN 1297) |
External Fire Performance
| BROOF (t4) 0° - 70° (subject to construction) | (EN 13501-5) |
Reaction to Fire
Class E | (EN ISO 11925-2, classification to 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
- 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 EL 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.
Fixing method - General
The waterproofing membrane is installed by laying onto an adhesive coated substrate. Overlap seams are hot welded using specialised hot air equipment.
Fully bonded roof surfaces and detailing
The membrane is bonded to the substrate by Sarnacol® 2170 / 2172 Spray adhesive or Sarnacol® 2142S contact adhesive depending on the type and slope of substrate.
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 minimum 20 mm.
Testing overlap seams
The seams must be mechanically tested with screwdriver or steel needle to ensure the integrity/completion of the weld. Any imperfections must be rectified by hot air welding.
Bonding to flashings
Sarnafil® G 410-20 EL Felt is bonded to flashing surfaces using Sarnacol® 2170 / 2172 Spray adhesive.