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 Name | Reflex Insulation™ HD Sarking |
| Roll Size | 1350 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 Rating | Heavy |
Product Testing
Reflex Insulation™ HD Sarking Summary of Testing Results
| Flammability Index | AS 1530.2-1993 | ≤5 (Low) |
| Duty Rating | AS/NZS 4200.1:1994 | Heavy |
| Vapour Control | AS/NZS 4200.1 Clause 5.3.2.3 | Class 2 Vapour Barrier |
| Vapour Permeance | ASTM E96-2016 Procedure B | <0.142 µg/N·s |
| Water Control | AS/NZS 4201.4:1994 | Water Barrier |
| Air Control | AS/NZS 4200.1:2017 | Air Barrier |
| Resistance to Dry Delamination | AS/NZS 4201.1:1994 | Pass |
| Resistance to Wet Delamination | AS/NZS 4201.2:1994 | Pass |
| Shrinkage (Repeated wetting & drying) | AS/NZS 4201.3:1994 | ≤0.5% |
| Emmitance Value | AS/NZS 4200.1:2017 | Outward Facing: 0.90, Inward Facing: ≤0.05 |
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
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.
