Can Soprasun Plus 3 be torch-applied?

Yes — fully heat welded with a propane torch or MINI MACADEN machine. Mechanical fixing is only permitted when used as an under layer in multi-layer systems.

What primer is required over concrete or metal?

Prime with Soprema Antirock Primer at the rate specified in the Antirock TDS before torching down Soprasun Plus 3.

How much area does one roll cover?

Each 1 m × 10 m roll covers 10 m². Allow for side and end lap overlaps in your take-off.

Can the membrane be left exposed long-term?

Soprasun Plus 3 is suitable as an under layer with no UV exposure, or as a top layer where it is not UV-exposed. For UV exposure use Soprasun Plus 4.5 mineral cap sheet.

How should rolls be stored on site?

Store rolls upright with the selvedge side on top. If stored outdoors, cover with an opaque protection sheet once the delivery packaging is removed.

What test standards does it meet?

Tested to AS 4654.1 and supporting ASTM methods — passes durability, cyclic movement, heat ageing, and watertightness > 200 kPa to EN 1928-B.

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Soprema Soprasun Plus 3

Name: Soprema Soprasun Plus 3
Brand: Soprema
SKU: SSOS5
Price: 185.11 AUD
Availability: InStock

$185.11

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Soprema Soprasun Plus 3 is a cutting-edge heat-welded base sheet membrane crafted with a composite reinforcement and APP modified bitumen. This innovative roofing solution offers superior performance, durability, and reliability for your construction projects.

Fully heat welded with a propane torch or MINI MACADEN machine

Composite polyester and fibreglass reinforcement for excellent dimensional stability

Watertightness greater than 200 kPa tested to EN 1928-B:2000

Quantity: 1

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Soprema Soprasun Plus 3

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

Product Details

With its advanced composition, Soprasun Plus 3 delivers exceptional waterproofing capabilities, ensuring long-lasting protection against moisture intrusion. Furthermore, its heat-welded installation process guarantees secure and seamless seams, enhancing the membrane's resistance to leaks and damages.

Advantages:

Exceptional waterproofing capabilities
Durable and reliable construction material
Heat-welded installation for secure and seamless seams
Resistant to leaks and damages
Provides long-lasting protection

Ideal applications:

Roofing projects requiring advanced waterproofing
Commercial and residential buildings
Industrial facilities
Institutional structures
Suitable for painting and waterproofing projects

Experience the unmatched performance of Soprema Soprasun Plus 3, the ultimate choice for robust roofing and waterproofing solutions.

How to Use

Fully heat weld with a propane torch or MINI MACADEN machine, or mechanically fix when used as an under layer in multi-layer roofing assembliesConfirm all surfaces are smooth, dry and free of ice, snow or any other substance that may prevent the membrane from adhering properly
Confirm the substrate has a minimum 1% gradient so that water drains to drainage outlets
Confirm concrete substrate is fully cured before application of the membrane
Confirm concrete has a Concrete Surface Profile (CSP) between 3 and 6 as per International Concrete Repair Institute
Do not install heat welded membranes directly onto combustible substrate
Run an adhesion test prior to installation of the membrane
Prime concrete or metal surfaces with ANTIROCK PRIMER at the rate specified in its TDS; no primer is required when installed as top layer over a base sheet membrane
Unroll membrane sheets onto the roof surface
Starting at the low point of the roof, lay out the membrane so the plies are installed perpendicular to the roof slope, shingled to prevent back-water laps
Maintain the specified side-laps and end-laps, staggering end-laps 1m apart
Apply heat to the underside of the ply until the thermofusible film melts sufficiently for full adhesion to the substrate and full adhesion between plies
With hand-held roof torches, move the torch side-to-side across the underside of the roll while continuously unrolling the sheet
Keep approximately 6 to 12mm of hot bitumen flowing ahead of the roll and 3 to 6mm bleed out at all laps
Ensure all side-laps are fully adhered and sealed watertight
At the 150mm end-laps, melt the thermofusible film or embed granules and remove other membrane surfacing where present, using a torch or hot-air welder, to give a fully adhered watertight seal
Waterproof all penetrations and upturn details as per SOPREMA Installation Guides and detail drawings
Adjust application methods to accommodate varying environmental conditions as necessary

Technical Specifications

Membrane Classification: APP modified bitumen waterproofing membrane
Reinforcement: Non-woven polyester combined with fibreglass composite
Top Surface (PLUS 3 SANDED): Anti-adhesive amorphous sand
Top Surface (PLUS 3 PLAIN): Thermofusible plastic film
Bottom Surface: Thermofusible plastic film
Thickness: 3 mm
Roll Dimensions: 10 m x 1 m
Roll Weight: 36 kg (SANDED), 30 kg (PLAIN)
Rolls Per Pallet: 25
Bond Strength to Concrete: 27.4 N/2.5cm (ASTM C794)
Tensile Strength: 740 N/5CM (ASTM D5147)
Elongation at Break: 37 % (AS 4654.1)
Dimensional Stability: MD -0.10 %, CD -0.19% (ASTM D5147)
Field Seam Strength: 1.2 (+/-162) N/m (ASTM D1876)
Cyclic Movement: PASS (CSIRO Moving joint test (B))
Heat Ageing: PASS, no visual change (AS 4654.1 (AS 1145.3))
Durability: PASS (AS 4654.1)
Watertightness: Greater than 200 kPa (EN 1928-B:2000)
Water Vapour Transmission Rate: 0 perm (AS 4654.1)
Ultraviolet Resistance: NPD, applicable only to self-protected (AS 4654.1 (AS 1145.3))
Abrasion Resistance: NPD, applicable only to self-protected (AS 1580.403.2)
Heat Resistance: NPD (ASTM D4799)
End-Lap: 150mm, staggered 1m apart
Minimum Substrate Gradient: 1%
Application: Fully heat welded by propane torch or MINI MACADEN machine, or mechanically fixed as under layer only
Shelf Life: 36 months when properly stored

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Technical overview

SOPRASUN PLUS 3 is an APP modified bitumen waterproofing membrane for roofing and below grade applications, reinforced with a non-woven polyester combined with fibreglass. It is fully heat welded with a propane torch or a MINI MACADEN machine, or mechanically fixed when used as an under layer in multi-layer roofing assemblies. The data sheet states compliance with AS 4654.1 and carries Appraisal No.1145 [2021]. Performance figures are published against the test methods named on the data sheet, including ASTM D5147, ASTM C794, EN 1928-B:2000 and AS 4654.1. No accredited test certificate or report number is published with the TDS.

View full technical data sheet

Key applications

Rooftops
Plaza decks
Balconies
Planter boxes (in conjunction with SOPRAGUM PLUS GARDEN 4)
Retaining Walls
Top layer where there is no UV exposure
Under layer in multi-layer waterproofing assemblies
Vertical and horizontal waterproofing
Below grade applications

Surface suitability

Concrete (fully cured, Concrete Surface Profile CSP 3 to 6, primed with ANTIROCK PRIMER)
Metal (primed with ANTIROCK PRIMER)
Base sheet membrane (no primer required when installed as top layer)

Suitable as a top layer only where there is no UV exposure. Ultraviolet resistance and abrasion resistance are listed as NPD and apply only to self-protected membranes. Do not install heat welded membranes directly onto combustible substrate. No work should be started until all surfaces are smooth, dry and free of ice, snow or any other substance that may prevent the membrane from adhering properly. The substrate must have a minimum 1% gradient and concrete must be fully cured with a Concrete Surface Profile (CSP) between 3 and 6 as per International Concrete Repair Institute. An adhesion test is recommended prior to installation, and commencement of installation shall be taken as acceptance of the substrate by the Applicator.

Calculate your coverage

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Soprema Soprasun Plus 3

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Technical Specifications

Membrane Classification	APP modified bitumen waterproofing membrane
Reinforcement	Non-woven polyester combined with fibreglass composite
Top Surface (PLUS 3 SANDED)	Anti-adhesive amorphous sand
Top Surface (PLUS 3 PLAIN)	Thermofusible plastic film
Bottom Surface	Thermofusible plastic film
Thickness	3 mm
Roll Dimensions	10 m x 1 m
Roll Weight	36 kg (SANDED), 30 kg (PLAIN)
Rolls Per Pallet	25
Bond Strength to Concrete	27.4 N/2.5cm (ASTM C794)
Tensile Strength	740 N/5CM (ASTM D5147)
Elongation at Break	37 % (AS 4654.1)
Dimensional Stability	MD -0.10 %, CD -0.19% (ASTM D5147)
Field Seam Strength	1.2 (+/-162) N/m (ASTM D1876)
Cyclic Movement	PASS (CSIRO Moving joint test (B))
Heat Ageing	PASS, no visual change (AS 4654.1 (AS 1145.3))
Durability	PASS (AS 4654.1)
Watertightness	Greater than 200 kPa (EN 1928-B:2000)
Water Vapour Transmission Rate	0 perm (AS 4654.1)
Ultraviolet Resistance	NPD, applicable only to self-protected (AS 4654.1 (AS 1145.3))
Abrasion Resistance	NPD, applicable only to self-protected (AS 1580.403.2)
Heat Resistance	NPD (ASTM D4799)
End-Lap	150mm, staggered 1m apart
Minimum Substrate Gradient	1%
Application	Fully heat welded by propane torch or MINI MACADEN machine, or mechanically fixed as under layer only
Shelf Life	36 months when properly stored

Frequently asked questions

View all FAQs

Can Soprasun Plus 3 be torch-applied?

Application
Yes — fully heat welded with a propane torch or MINI MACADEN machine. Mechanical fixing is only permitted when used as an under layer in multi-layer systems.
What primer is required over concrete or metal?

Compatibility
Prime with Soprema Antirock Primer at the rate specified in the Antirock TDS before torching down Soprasun Plus 3.
How much area does one roll cover?

Coverage & Coats
Each 1 m × 10 m roll covers 10 m². Allow for side and end lap overlaps in your take-off.
Can the membrane be left exposed long-term?

Cure & Dry Time
Soprasun Plus 3 is suitable as an under layer with no UV exposure, or as a top layer where it is not UV-exposed. For UV exposure use Soprasun Plus 4.5 mineral cap sheet.
How should rolls be stored on site?

Storage
Store rolls upright with the selvedge side on top. If stored outdoors, cover with an opaque protection sheet once the delivery packaging is removed.
What test standards does it meet?

Performance
Tested to AS 4654.1 and supporting ASTM methods — passes durability, cyclic movement, heat ageing, and watertightness > 200 kPa to EN 1928-B.

Why trade professionals choose Soprema

Soprema is a French waterproofing manufacturer whose torch applied and liquid applied systems are supplied to the Australian trade. The range stocked here covers Soprasun Plus sheet membranes for roof and balcony work, Colphene 3000 for below ground and retaining wall work, Alsan Flashing liquid detailers for junctions and penetrations, and the Elastocol Stick and AntiRock primers that go underneath them. It is a system led range, so most jobs pull a primer, a membrane and a detailing product from the same brand.

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