Sarnafil® S 327-72 Feltback EnergySmart
Sarnafil® S 327-72 Feltback EnergySmart is a PVC thermoplastic roof membrane produced with an integral polyester reinforcement for high strength, highly reflective, designed with heat-weldable seams, and a unique lacquer coating applied to the top of the membrane to reduce dirt pick up.
- Highly reflective
- Excellent tear strength resistance
- Factory-applied lacquer coated to reduce dirt pick up
- Hot-air welded seams for long-term performance
- Proven membrane performance
- Superior fire resistance
Usage
Sarnafil® S 327-72 Feltback EnergySmart is used in mechanically-attached applications with various fastening methods, over various substrates. Areas of Application- New roofs
- Reroofs
- Recovers
Advantages
- Highly reflective
- Excellent tear strength resistance
- Factory-applied lacquer coated to reduce dirt pick up
- Hot-air welded seams for long-term performance
- Proven membrane performance
- Superior fire resistance
Packaging
3 m x 24 m (10 ft x 80 ft) roll, 190 kg (419 lb) per roll, 8 rolls per pallet
Colour
- Top: White, Tan, and Reflective Grey
- Bottom: Grey
Product Details
APPROVALS / CERTIFICATES
- FM Global
- Underwriters Laboratories
- Underwriters Laboratories of Canada
- ICC Code Compliance – ESR 1157
- Miami-Dade County
- Florida Building Code
- NSF/ANSI 347: Platinum Certified
- ENERGY STAR®
- California Title 24
- LEED / Green Globes
- CGSB-37.54-95. Type 4/Class B
- CSA-A123.21
Composition / Manufacturing
High‐quality, PVC thermoplastic roof membrane containing ultraviolet light stabilizers, flame retardant and polyester scrim reinforcement with a unique lacquer coating on the top surface.
Recycled content
9 % Pre‐consumer, 1 % Post‐consumer
Reinforcing Material
Polyester
Shelf Life
Not applicable
Storage Conditions
Store rolls on pallets and fully protected from the weather with clean canvas tarpaulins. Unvented polyethylene tarpaulins are not accepted due to the accumulation of moisture beneath the tarpaulin in certain weather conditions that may affect the ease of membrane weldability.
Overall Thickness
| 1.8 mm (72 mil) 1.14 mm (45 mil) | (ASTM D751) (ASTM Type III D4434 Spec. Requirement) |
Thickness Above Scrim
| 0.87 mm (35 mil) 0.40 mm (16 mil) | (-) (ASTM Type III D4434 Spec. Requirement) |
Felt Weight
305 g/m2 (9 oz/sq yd)
Resistance to Static Puncture
| Pass 15 kg (33 lbf) | (ASTM D5602) (ASTM Type III D4434 Spec. Requirement) |
Resistance to Dynamic Puncture
| Pass 20 J (14.7 ft-lbf) | (ASTM D5635) (ASTM Type III D4434 Spec. Requirement) |
Tensile Strength
| 1401 N (315 lbf/in) 890 N (200 lbf/in) | (ASTM D751) (ASTM Type III D4434 Spec. Requirement) |
Linear Dimensional Change
| ‐0.13 % 0.5 % | (ASTM D1204) (ASTM Type III D4434 Spec. Requirement) |
Tear Strength
| 216 N (48.5 lbf) 200 N (45 lbf) | (ASTM D751 Method B) (ASTM Type III D4434 Spec. Requirement) |
Seam Strength
| Pass 75 % of original2 | (ASTM D751) (ASTM Type III D4434 Spec. Requirement) |
2Failure occurs through membrane rupture not seam failure.
Low Temperature Flexibility
| Pass Pass | (ASTM D2136), ‐40 °C (‐40 °F) (ASTM Type III D4434 Spec. Requirement) |
Retention of Properties after Heat Ageing
| Tensile Strength, % of original | Pass | (ASTM D3045) |
| Elongation, % of original | Pass | (ASTM D751) |
| Tensile Strength, % of original | 90 | (ASTM Type III D4434 Spec. Requirement) |
| Elongation, % of original | 90 | (ASTM Type III D4434 Spec. Requirement) |
Resistance to UV Exposure
| 10,000 hours 5,000 hours | (ASTM G154) (ASTM Type III D4434 Spec. Requirement) |
| Cracking (7x magnification) | None |
| Discoloration (by observation) | Negligible |
| Crazing (7x magnification) | None |
Weight Change after Immersion in Water
| 1.8 % ± 3.0 % | (ASTM D570) (ASTM Type III D4434 Spec. Requirement) |
Solar Reflectance
| EnergySmart Colours | Initial Solar Reflectance1 | 3-Year Solar Reflectance1 |
| EnergySmart White2 | 0.84 | 0.76 |
| EnergySmart Tan2 | 0.73 | 0.65 |
| EnergySmart Reflective Grey3 | 0.73 | 0.66 |
1 Solar Reflectance testing according to ASTM C1549.
2 EnergySmart White and EnergySmart Tan membranes meet ENERGY STAR®, LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.
Thermal Emittance
| EnergySmart Colours | Initial Thermal Emittance1 | 3-Year Thermal Emittance1 |
| EnergySmart White2 | 0.86 | 0.85 |
| EnergySmart Tan2 | 0.85 | 0.86 |
| EnergySmart Reflective Grey3 | 0.89 | 0.88 |
1 Thermal Emittance testing according to ASTM C1371, Slide Method.
2 EnergySmart White and EnergySmart Tan membranes meet ENERGY STAR®, LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.
Solar Reflectance Index
| EnergySmart Colours | Initial Solar Reflectance Index | 3-Year Solar Reflectance Index |
| EnergySmart White1 | 105 | 93 |
| EnergySmart Tan1 | 89 | 78 |
| EnergySmart Reflective Grey2 | 90 | 80 |
1 EnergySmart White and EnergySmart Tan membranes meet ENERGY STAR®, LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.
2 EnergySmart Reflective Grey membrane meets LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.
Application
APPLICATION
Sarnafil® S 327-72 Feltback EnergySmart is rolled out after proper preparation of the approved substrate and attached to the roof deck with appropriate mechanically-attached system with sarnafasteners in accordance with Sika’s technical requirements. Sarnafil® S 327-72 Feltback EnergySmart seams are heat‐welded together by trained operators using hot‐air welding equipment. Different mechanically-attached systems require different application methods. Please consult Sika’s Specifications or Applicator Handbook for detailed installation procedures.