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Sarnafil® TG 66-20

Polymeric Membrane for Ballasted Roof Waterproofing

Sarnafil® TG 66-20 (thickness 2.0 mm) is a multi-layer, synthetic roof waterproofing sheet based on premiumquality flexible polyolefins (FPO), with inlay of glass non-woven according to EN 13956.
Sarnafil® TG 66-20 is a hot air weldable, UV-resistant roof membrane. Suitable for use in hot and tropical climatic conditions.

▪ Proven performance over decades
▪ Resistant to micro-organisms
▪ Resistant to root penetration
▪ High dimensional stability due to glass fleece inlay
▪ Compatible to bitumen
▪ Resistant to permanent UV exposure
▪ Resistant against impact load and hail
▪ Resistant to all common environmental influences
▪ Resistant to mechanical influences
▪ Hot air welding without use of open flame
▪ Recyclable
Sarnafil® TG 66-20
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Usage

Roof waterproofing membrane for roofs with ballast (example gravel, concrete slabs, green roof) and / or exposed flat roofs:
  • Loosely laid and Ballasted roofs
  • Green roofs
  • Utility roofs
  • Inverted roofs
Roof waterproofing membrane for exposed roof junction zones:
  • Roof waterproofing for junctions and flashings, example wall and parapet junctions, roof lights, etc., which are permanently exposed in installations of Sarnafil® TG 66-20 roof waterproofing systems with ballast.
  • Roof waterproofing for junctions and flashings in installations of all types of Sarnafil® TG 66-20 and TG 76 Felt exposed roof waterproofing systems.
 

Advantages

▪ Proven performance over decades
▪ Resistant to micro-organisms
▪ Resistant to root penetration
▪ High dimensional stability due to glass fleece inlay
▪ Compatible to bitumen
▪ Resistant to permanent UV exposure
▪ Resistant against impact load and hail
▪ Resistant to all common environmental influences
▪ Resistant to mechanical influences
▪ Hot air welding without use of open flame
▪ Recyclable

Packaging

Sarnafil® TG 66-20 standard rolls are wrapped individually in a blue PE-foil.

Packing unitSee price list
Roll length

15.00 m

Roll width2.00 m
Roll weight60.00 kg

Colour

SurfaceMatt

Colours

Top surface

Beige

Grey (nearest RAL 7040)

Bottom surface

Black

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Sarnafil® TG 66-20 is designed and manufactured to meet 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-mark
  • Reaction to fire according to EN 13501-1
  • Official Quality Approvals and Agrement Certificates and approvals
  • Monitoring and assessment by approved laboratories
  • Root penetration resistance tested according to FLL-Test Procedure

 
Product Information

Shelf life

5 years from date of production in unopened, undamaged and original packaging.

Storage conditions

Rolls must be stored between +5 °C and +30 °C in a horizontal position on pallet, protected from direct sunlight, rain and snow. Do not stack pallets of rolls or any other material during transport or storage.

Product Declaration

EN 13956

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

2.0 kg/m² (-5 % / +10 %)

(EN 1849-2)
System information

System Structure

Wide range of accessories is available e.g. prefabricated parts, roof drains, scuppers, protection sheets and separation layers.

The following accessories shall be used:

  • Sarnafil® T 66-15 D Sheet for detailing
  • Sarnafil® T Metal Sheet
  • Sarnabar
  • Sarnafil® T Welding Cord
  • Sarnafil® T Prep
  • Sarnacol® T 660
  • Sarnafil® T Clean

Compatibility

Sarnafil® TG 66-20 may be installed on all thermal insulations and levelling layers suitable for roofing. No additional separation layer is required.
Sarnafil® TG 66-20 is suitable for installation directly on top of existing, carefully cleaned, level bituminous roofing, example re-roofing over old flat roofs.

Colour changes in membrane surface may occur in case of direct contact with bitumen.
Technical Information

Resistance to Impact

Hard substrate≥  1250 mm
Soft substrate≥  1500 mm

Hail Resistance

Rigid substrate

≥  30 m/s

Flexible substrate

≥ 40 m/s

Resistance to Static Load

Soft substrate≥  20 kg
Rigid substrate≥  20 kg

Resistance to Root Penetration

Pass

(EN 13948)

Tensile Strength

Longitudinal (md)1) ≥  9 N/mm²
Transversal (cmd)2)≥  7 N/mm²

Elongation

Longitudinal (md)1) ≥  550 %
Transversal (cmd)2)≥  550 %

Dimensional Stability

Longitudinal (md)1) ≤  0.2 %
Transversal (cmd)2)≤  0.1 %

Joint Shear Resistance

≥  500 N/50 mm

(EN 12317-2)

Foldability at Low Temperature

≤  -45 °C

(EN 495-5)

Reaction to Fire

Class E

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

Effect of Liquid Chemicals, Including Water

On request

(EN 1847)

Exposure to Bitumen

Pass 3)

(EN 1548)

3) Sarnafil® T is compatible to old bitumen.

Resistance to UV Exposure

Pass (> 5000 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, solvent resistant, clean, dry and free of grease and dust. Metal sheets must be degreased with Sarnafil® Cleaner before adhesive is applied.

APPLICATION

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


Installation of some ancillary products, example contact adhesives / cleaners is limited to temperatures above +5 °C. Please observe information given by Product Data Sheets.
Special measures may be compulsory for installation below +5 °C ambient temperature due to safety requirements in accordance with national regulations.

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