Reflex Insulation™ HD Sarking

Reflective Heavy Duty Sarking & Wall Wrap Membrane

Reflex Insulation™ HD Sarking is a Heavy Duty multipurpose sarking and wall wrap designed for use in roof and wall systems. One side consists of a highly reflective foil, and the overall product is strong and tear resistant due to the weave layer structure. Classified as High Water Barrier and a Class 2 Vapour Barrier, Reflex Insulation™ HD Sarking acts as a barrier to radiant heat, moisture ingress, draughts and dust penetration.

Product Advantages

  • Highly Reflective single sided aluminium
  • Strong tear resistant weave
  • Low flammability
  • Water Barrier and Air Barrier
  • Class 2 Vapour Barrier

Applications

Roof Sarking, Residential & Commercial Wall Wrap.

Blank one so all stay closed
Product Details
Product NameReflex Insulation™ HD Sarking
Roll Size1350 mm x 60 m (81m2)
1350 mm x 30 m (40.5m2)
1500 mm x 60 m (90m2)
1500 mm x 30 m (45m2)
Duty RatingHeavy
Product Testing

Reflex Insulation™ HD Sarking Summary of Testing Results

Flammability IndexAS 1530.2-1993≤5 (Low)
Duty RatingAS/NZS 4200.1:1994Heavy
Vapour ControlAS/NZS 4200.1 Clause 5.3.2.3Class 2 Vapour Barrier
Vapour PermeanceASTM E96-2016 Procedure B<0.142 µg/N·s
Water ControlAS/NZS 4201.4:1994Water Barrier
Air ControlAS/NZS 4200.1:2017Air Barrier
Resistance to Dry DelaminationAS/NZS 4201.1:1994Pass
Resistance to Wet DelaminationAS/NZS 4201.2:1994Pass
Shrinkage (Repeated wetting & drying)AS/NZS 4201.3:1994≤0.5%
Emmitance ValueAS/NZS 4200.1:2017Outward Facing: 0.90, Inward Facing: ≤0.05
Bushfire Attack Levels
Reflex Insulation™ HD Sarking complies with AS 3959-2018 Construction of buildings in bushfire-prone areas for use in BAL 12.5 – BAL FZ.
 
Specification Notes
When specifying, state the following:


Product Name: Reflex Insulation™ HD Sarking

The insulation to be installed shall be Reflex Insulation™ HD Sarking Heavy Duty single-sided reflective membrane, and shall be installed in accordance with AS/NZS 4200.2.

Duty Classification: Heavy
Vapour Barrier Classification: Class 2 Vapour Barrier
Water Control Classification: Water Barrier
Flammability Classification: Low (≤5)

Installation Instructions

Reflex Insulation™ HD Sarking should be installed in accordance with AS/NZS 4200.2 Pliable Building Membranes and Underlays, Part 2: Installation Requirements.

GENERAL

Reflex Insulation™ HD Sarking should be installed horizontally with the printed side facing outward. Fix the product to all framing members, as a continuous membrane, and ensuring any damage or tears to the membrane are repaired.
Fixings should be galvanised clouts or staples for timber frames, and button head or tek screws for steel frames. In high wind areas, it is recommended to install using flat punched multi-point fasteners or cap screws.

When installing Reflex Insulation™ HD Sarking, line up bottom of the roll covering the base of the timber bottom plate, ensure the product is level.
Horizontal, vertical and end overlaps must be 150 mm, with top layers of the membrane overlapping the outside of the lower layers to prevent water ingress.
Continue until the top of the wall frame is covered, and seal the membrane with tape to the top plate.

At windows or openings, Reflex Insulation™ HD Sarking must be neatly cut, sealed and flashed at all sides to achieve its desired function and facilitate proper drainage to the building flashing. Ensure the membrane diverts water away from the opening.

External cladding should be installed without delay so as not to prolong direct exposure to UV light and other elements.