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Sarnafil® TG 76-20 Felt PS

Polymeric membrane for adhered roof waterproofing

Sarnafil® TG 76-20 Felt PS (thickness 2.0 millimeter) is a multi-layer, synthetic roof waterproofing sheet based on premium-quality flexible polyolefins (FPO), containing stabilizers, with inlay of glass non-woven and polyester or glass mix fleece backing according to EN 13956. Sarnafil® TG 76-20 Felt PS is a hot air weldable, UV-resistant roof membrane. Suitable for use in hot and tropical climatic conditions.

  • Proven performance over decades
  • Various colours available
  • Resistant to permanent UV irradiation
  • High dimensional stability due to glass fleece inlay
  • Resistant against impact load and hail
  • Resistant to all common environmental influences
  • Resistant to micro-organisms
  • Compatible to old bitumen
  • Hot air welding without use of open flames
  • Recyclable
Sarnafil® TG 76-20 Felt PS
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Usage

Waterproofing membrane for fully bonded exposed roofs with Sarnacol®-2142 S.  

Advantages

  • Proven performance over decades
  • Various colours available
  • Resistant to permanent UV irradiation
  • High dimensional stability due to glass fleece inlay
  • Resistant against impact load and hail
  • Resistant to all common environmental influences
  • Resistant to micro-organisms
  • Compatible to old bitumen
  • Hot air welding without use of open flames
  • Recyclable

Packaging

Sarnafil® TG 76-20 Felt PS standard rolls are wrapped individually in a blue PE-foil.

Packing unit

Roll length

15.00 m

Roll width

2.00 m   

Roll weight70.50 kg

Colour

Surface

Matt

Colours:

Top surface

Beige
Grey (nearest RAL 7040) 

Bottom surfaceBlack

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Sarnafil® TG 76-20 Felt PS is designed and manufactured to meet the most international recognised standards.
  • Polymeric sheets for roof waterproofing according to EN 13956, certified by notified body 1213-CPD-3914 and provided with the CE-marking.
  • Reaction to fire according to EN 13501-1.
  • External fire performance tested according to ENV 1187 and classified according to EN 13501-5: BROOF (t1), also for direct contact to EPS board.
  • Official Quality Approvals and Agreement Certificates and approvals.
  • Monitoring and assessment by approved laboratories.
Product Information

Shelf life

Product does not expire if correctly stored.

Storage conditions

Rolls must be stored in a horizontal position on pallet and protected from direct sunlight, rain and snow. Do not stack pallets of rolls during transport or storage.

Product Declaration

Nill

(EN 13956)

Visible Defects

Pass

(EN 1850-2)

Length

15 m (-0 % / +5 %)

(EN 1848-2)

Width

2.0 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

2.35 kg/m² (-5 % / +10 %)

(EN 1849-2)
System information

System Structure

Wide range of accessories is available for example prefabricated parts, roof drains, scuppers and walkway pads.


The following accessories shall be used:

  • Sarnafil® T 66-15 D Sheet for detailing
  • Sarnafil® T Metal Sheet
  • Sarnabar
  • Sarnafil® T Prep / Sarnafil® T Wet Task Set
  • Sarnacol® T 660
  • Solvent T 660
  • Sarnacol® 2142S
  • Sarnafil® T Clean

Compatibility

Sarnafil® TG 76-20 Felt PS may be installed on all thermal insulations and levelling layers suitable for roofing. No additional separation layer is required. Sarnafil® TG 76-20 Felt PS is suitable for installation directly on top of existing, carefully cleaned, level bituminous roofing, example re-roofing over old flat roofs.
Sarnacol® 2142 S single-component PUR adhesive is designed for adhering felt-backed Sarnafil® TG 76-20 Felt PS to standard insulations and substrates. Adhering Sarnafil® TG 76-20 Felt PS by means of Sarnacol®-2142 S is particularly suitable for re-roofing over old bitumen waterproofing. (Not suitable for re-roofing over synthetic, rubber or ECB roofing).
Technical Information

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

Hard substrate

≥ 20 kg

Soft substrate

≥ 20 kg

Tensile Strength

Longitudinal (md)1)

≥ 500 N/50 mm

Transversal (cmd) 2)

≥ 500 N/50 mm

1)md = machine direction
2)cmd = cross machine direction

Elongation

Longitudinal (md) 1)

≥ 2 %

Transversal (cmd) 2)

≥ 2 %

1)md = machine direction
2)cmd = cross machine direction

Dimensional Stability

Longitudinal (md)1)

≤ 0.2 %

Transversal (cmd)2)

≤ 0.1 %

1)md = machine direction
2)cmd = cross machine direction

Joint Peel Resistance

≥ 300 N / 50 mm

(EN 12316-2)

Joint Shear Resistance

≥ 300 N / 50 mm

(EN 12317-2)

Foldability at Low Temperature

< -30 °C

(EN 495-5)

External Fire Performance

BROOF (t1) < 20°

(ENV 1187)

(EN 13501-5)

Reaction to Fire

Class E

(EN ISO 11925-2, classification to EN 13501-1)

Effect of Liquid Chemicals, Including Water

On request

Exposure to Bitumen

Pass 3)

(EN 1548)

3) Sarnafil® T is compatible to old bitumen

Resistance to UV Exposure

Pass (> 5 000 h / grade 0)

(EN 1297)

Watertightness

Pass

(EN 1928)

Application

Application Information

Ambient Air Temperature

-20 °C min. / +60 °C max.

Substrate Temperature

-30 °C min. / +60 °C max.
Application steps

SUBSTRATE QUALITY

The substrate surface must be uniform, smooth and free of any sharp protrusions or burrs, etc.
The supporting layer must be compatible to the membrane and free of oil and grease. Cut open any blisters in the old waterproofing and repair. The safety of the existing roof assembly in terms of wind uplift must be ensured. Any insufficiently secured sections or components (example chippings, slating etc.) must be removed to provide a smooth surface.The curing of Sarnacol®-2142 S requires moisture. The base layer may therefore be slightly moist (no puddles). If the relative humidity is below 35 % moisten the adhesive after it has been applied.

APPLICATION

Installation works to be carried out only by Sika instructed contractors for roofing.

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