Trade Select SilverFloor®
500mm x 60m (30 m²)
$80.75
Sale price
$80.75
Regular price
$85.00
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Trade Select SilverFloor®
$80.75
Sale price
$80.75
Regular price
$85.00
GST inclusive
Dispatch: Most orders are processed the same day. Metro delivery: Usually 1–3 business days. We do our best to get most items out on the next business day.
Australia-wide freight · Local pickup from Epping, VIC by arrangement. Ordering from the outback? Get in touch about deliveries to remote locations · Shipping details
Trade Select SilverFloor is a double sided reflective foil underfloor insulation, 97% reflective on both faces, in 500 mm and 1500 mm wide rolls of 60 m.
Enclosing the sub-floor is the big lever
The system figures make it plain. In an enclosed unventilated sub-floor Ametalin quotes RT 3.36 in winter and 1.52 in summer. In an unenclosed ventilated sub-floor the same product gives RT 2.05 and 0.77. If the sub-floor can be enclosed, that decision changes the result more than anything else you can specify.
Built for the conditions under a floor
It has 5 mm weep holes at 400 mm intervals, so water that does get onto it can drain rather than pool. It is Class 3 vapour permeable and deliberately not a water barrier or air barrier, because under a floor you want moisture to be able to move rather than be trapped against the structure.
Tough enough to work with
Heavy duty to AS/NZS 4200.1:2017, with edge tear of 439 N and 452 N against an 80 N minimum, and UV resistance up to 90 days. Sub-floor work is awkward and the membrane takes a beating going in.
Which width
The 500 mm roll covers 30 m² and suits working between joists single handed. The 1500 mm roll covers 90 m² for open runs. It is electrically conductive, so keep it clear of wiring.
Full figures are in the table below.
Technical data
Ametalin technical data sheet (PDF)Sizes stocked
| Code | Roll size | Area per roll | Nominal thickness |
|---|---|---|---|
| SF-30 | 500 mm x 60 m | 30 m² | 0.13 mm |
| SF-90 | 1500 mm x 60 m | 90 m² | 0.13 mm |
Total system R-value
| Enclosed unventilated sub-floor, winter | RT 3.36 |
|---|---|
| Enclosed unventilated sub-floor, summer | RT 1.52 |
| Unenclosed ventilated sub-floor, winter | RT 2.05 |
| Unenclosed ventilated sub-floor, summer | RT 0.77 |
System values under NCC 2019 with SilverFloor installed between joists or over bearers, calculated by an independent engineer to AS/NZS 4859.2. An enclosed sub-floor gives roughly 60% more winter R-value than a ventilated one, which is worth knowing before you frame.
Classification
| Duty | Heavy (AS/NZS 4200.1:2017) |
|---|---|
| Emittance | 0.03 both faces, IR reflective, category RR |
| Reflectivity | 97% reflective aluminium foil on both sides |
| Vapour control | Class 3 vapour permeable, 0.3009 µg/N·s (ASTM E96) |
| Water control | Non-water barrier |
| Air control | Non-air barrier |
| Electrical conductivity | Conductive |
| Drainage | 5 mm weep holes at 400 mm intervals |
The weep holes are deliberate. They let water and vapour pass through instead of pooling on top of the membrane under the flooring.
Strength and durability
| Tensile strength, machine direction | 12.8 kN/m (minimum 12.5) |
|---|---|
| Tensile strength, lateral direction | 14.2 kN/m (minimum 7.5) |
| Edge tear, machine direction | 439 N (minimum 80) |
| Edge tear, lateral direction | 452 N (minimum 80) |
| UV resistance | Up to 90 days |
| Shrinkage | 0.0%, well inside the 0.5% limit |
| Dry and wet delamination | Pass (AS/NZS 4201.1 and 4201.2) |
Fire
| Flammability classification | Low, 5 or lower (AS 1530.2) |
|---|
Build-up
| Layers | Aluminium foil, polymer adhesive, polymer film, woven polymer, polymer adhesive, aluminium foil |
|---|---|
| Lamination | Polymer adhesive that stays tacky, for resistance to heat and delamination |
Fitting notes
Goes under a floor that is fixed straight down to the joists, with a sealed air space between the flooring and the sub-floor. Both faces are reflective, so it works whichever way up it goes, but it does need that air space to give you the R-value. If the sub-floor is open to wind, as in pole construction, line under the joists first. The foil conducts electricity, so keep it clear of wiring.
Figures are taken from the Ametalin technical data sheet for SilverFloor, document APM-46115-3. The full manufacturer document is linked above. Ametalin can change specifications without notice, so check the current sheet before specifying on a job.
Common questions
What sizes are stocked and how much does each one cover?
2 options are stocked, running from SF-30 to SF-90. The table above lists each one with the coverage or quantity you get.
What thermal performance does it have?
Emittance: 0.03 both faces, IR reflective, category RR. Electrical conductivity: Conductive.
How does it handle moisture?
Vapour control: Class 3 vapour permeable, 0.3009 µg/N·s (ASTM E96). Water control: Non-water barrier. Dry and wet delamination: Pass (AS/NZS 4201.1 and 4201.2).
Does it meet Australian standards?
Flammability classification: Low, 5 or lower (AS 1530.2).
How is it installed?
Goes under a floor that is fixed straight down to the joists, with a sealed air space between the flooring and the sub-floor. Both faces are reflective, so it works whichever way up it goes, but it does need that air space to give you the R-value. If the sub-floor is open to wind, as in pole construction, line under the joists first. The foil conducts electricity, so keep it clear of wiring.
Cannot see your question? Ask our team and we will get you an answer.
Figures are taken from the Ametalin technical data sheet for SilverFloor, document APM-46115-3. The full manufacturer document is linked above. Ametalin can change specifications without notice, so check the current sheet before specifying on a job.
