Product Data Sheet Safety Data Sheet Show all documents
Sarnafil® S 327-48 Feltback EnergySmart

Sarnafil® S 327-48 Feltback EnergySmart

48 mil thick PVC thermoplastic membrane with 9 oz. felt backing 

Sarnafil® S 327-48 Feltback EnergySmart Roof Membrane is a PVC thermoplastic membrane produced with an integral polyester reinforcement for high strength, is highly reflective, 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 coating to reduce dirt pick up
  • Hot‐air welded seams for long‐term performance
  • Proven membrane performance
  • Superior fire resistance
Product Data Sheet Safety Data Sheet Show all documents

Usage

Mechanically attached applications with various fastening methods, over various substrates. It can also be used in adhered applications to approved substrates.     AREAS OF APPLICATION   
  • In-seam disc systems
  • In-seam batten, double-weld systems
  • RhinoBond® systems
  • New construction and reroofing 
 

Advantages

  • Highly reflective
  • Excellent tear strength resistance
  • Factory applied lacquer coating to reduce dirt pick up
  • Hot‐air welded seams for long‐term performance
  • Proven membrane performance
  • Superior fire resistance

Packaging

48 mil (1.2 mm) Membrane*

10 ft x 100 ft (3 m x 30 m) roll, 372 lbs (169 kg) per roll,

9 rolls per pallet

* Made to order, minimum volume required, extended production lead times. Consult with Sika – Roofing representative for further information.

Color

  • Top: White, Tan, and Reflective Gray
  • Bottom: Gray

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • FM Global
  • Underwriters Laboratories
  • Underwriters Laboratories of Canada
  • ICC Code Compliance – ESR 1157
  • Miami‐Dade County
  • Florida Building Code
  • NSF/ANSI 347: Platinum Certified
  • California Title 24
  • LEED / Green Globes
 
Product Information

Chemical Base

High‐quality, PVC 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

N/A

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

48 mil (minimum thickness)

45 mil

(ASTM D-751)

(ASTM Type III D-4434 Spec. Requirement)

Thickness Above Scrim

21 mil

16 mil

(ASTM D-7635)

(ASTM Type III D-4434 Spec. Requirement)

Felt Weight

9 oz/yd2
Technical Information

Resistance to Static Puncture

Pass

33 lbf (15 kg)

(ASTM D-5602)

(ASTM Type III D-4434 Spec. Requirement)

Resistance to Dynamic Puncture

Pass

14.7 ft-lbf (20 J)

(ASTM D-5635)

(ASTM Type III D-4434 Spec. Requirement)

Tensile Strength

295 lbf (1312 N)

200 lbf (890 N)

(ASTM D-751)

(ASTM Type III D-4434 Spec. Requirement)

Tear Strength

47 lbf (209 N)

45 lbf (200 N)

(ASTM D-751)

(ASTM Type III D-4434 Spec. Requirement)

Seam Strength

Pass

75% of original1

(ASTM D-751)

(ASTM Type III D-4434 Spec. Requirement)

1 Failure occurs through membrane rupture not seam failure.

Linear Dimensional Change

‐0.10%

0.5%

(ASTM D-1204)

(ASTM Type III D-4434 Spec. Requirement)

Solar Reflectance

EnergySmart Colors

Initial Solar

Reflectance1

3-Year Solar

Reflectance1

EnergySmart

White2

0.840.76

EnergySmart

Tan2

0.730.65

EnergySmart

Reflective Gray2

0.730.66

1 Solar Reflectance testing according to ASTM C1549.

2 Meets LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.

Solar Reflectance Index

EnergySmart Colors

Initial Solar

Reflectance Index1

3-Year Solar

Reflectance Index1

EnergySmart

White2

10593

EnergySmart

Tan2

8978

EnergySmart

Reflective Gray2

9080

1 Solar Reflectance Index calculated according to ASTM E1980.
2 Meets LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.

Thermal Emittance

EnergySmart Colors

Initial Thermal

Emittance1

3-Year Thermal

Emittance1

EnergySmart

White2

0.860.85

EnergySmart

Tan2

0.850.86

EnergySmart

Reflective Gray2

0.890.88

1 Thermal Emittance testing according to ASTM C1371, Slide Method.

2 Meets LEED, Green Globes, and California’s Title 24 criteria for Low and Steep Slope applications.

Low Temperature Bend

Pass

Pass ‐40°F (‐40°C)

(ASTM D-2136)

(ASTM Type III D-4434 Spec. Requirement)

Weight Change after Immersion in Water

2.2%

± 3.0%

(ASTM D-570)

(ASTM Type III D-4434 Spec. Requirement)

UV Exposure

10,000 hours

5,000 hours

(ASTM G-154)

(ASTM Type III D-4434 Spec. Requirement)

Cracking

(7x magnification)

None

Crazing

(7x magnification)

None

Retention of Properties after Heat Ageing

Tensile Strength, % of original: Pass

Elongation, % of original: Pass

Tensile Strength, % of original: 90

Elongation, % of original: 90

(ASTM D-751)

(ASTM D-751)

(ASTM Type III D-4434 Spec. Requirement)

Application

Application steps

APPLICATION

Sarnafil S 327 is rolled out after proper preparation of the approved substrate and fastened to the roof deck with appropriate mechanically attached system with Sarnafasteners in accordance with Sika’s technical requirements. Sarnafil S 327 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.

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