Product Data Sheet Show all documents

SikaShield® HB79 Tex 4 mm

Hybrid bituminous membrane surfaced with texflamina and flexible at -25 °C

SikaShield® HB79 Tex 4 mm is an SBS and APAO modified bituminous roof waterproofing membrane with a thickness of 4 mm. The upper layer is APAO modified, which provides good heat resistance, the under layer is SBS modified, increasing the elongation and cold flexibility properties. It is reinforced with a dimensionally stable composite inlay of a fiberglass matt compressed between two layers of non-woven spunbond polyetser fabric and is flexible at -25 °C. The top surface is coated with texflamina, a propylene non-woven fleece.

  • Combines the advantages of APAO and SBS bitumen
  • Easy to install by torching method
  • Highly flexible in cold temperatures
  • Fully bonded
  • High durability
  • High heat resistance
Find a Technical Advisor
Product Data Sheet Show all documents

Usage

The Product is used as a waterproofing membrane for:
  • Cap sheet for Inverted roof applications
  • Flat or sloping roofs with up to 15 % gradient
 

Advantages

  • Combines the advantages of APAO and SBS bitumen
  • Easy to install by torching method
  • Highly flexible in cold temperatures
  • Fully bonded
  • High durability
  • High heat resistance

Packaging

Roll width

1 m

Roll length

8.0 m

Refer to current price list for packaging variations.

Colour

Top surface

Texflamina, propylene non-woven fleece

Bottom surface

Polyethylene film

Top layer colour

Refer to current price list for color variations

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • UKCA marking and declaration of performance based on EN 13707:2004+A2:2009 Flexible sheets for waterproofing — Reinforced bitumen sheets for roof waterproofing — Definitions and characteristics

  • BBA Certified (19/5716)
Product Information

Chemical Base

Composition

SBS and APAO modified bitumen

Reinforcing material

Composite inlay of a fibreglass matt compressed between two layers of non-woven spunbond polyester fabric

Shelf Life

36 months from date of production

 

Storage Conditions

The Product must be stored in original unopened and undamaged packaging in dry conditions and temperatures between +5 °C and +35 °C. Store in a vertical 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.

Effective Thickness

Effective thickness

4.0 mm ± 0.2 mm
Technical Information

Resistance to Tearing (nail shank)

Longitudinal (MD)

250 N ± 75 N

Transversal (CMD)

250 N ± 75 N

Joint Shear Resistance

Longitudinal

650 N/50 mm ± 130 N/50 mm

Transversal

550 N/50 mm ± 110 N/50 mm

Flexibility at low temperature

≤ -25 °C

(EN 1109)

Flow resistance

90 °C ± 10 °C

(EN 1110)

Water Tightness

Method B, 24 hours at 60 kPa

Pass

Reaction to Fire

Class E

(EN 13501-1)

Application

Application Information

Ambient Air Temperature

Minimum

+5 °C

Maximum

+40 °C

Relative Air Humidity

Maximum

80 %

Substrate Temperature

Minimum

+5 °C

Maximum

+40 °C
Application steps

APPLICATION INSTRUCTIONS

Please refer to the SikaShield® Installation Guide

Documents