Protan Vacuum Roof System (no Mechanical fasteners)

PVC single-ply membrane roof system for warm roof constructions that requires no adhesives or fasteners - just the power of the wind.

The Protan Vacuum System uses one-way air vents to suck the air out of the space between the Protan membrane and the substrate. This creates a vacuum within the space, which sucks the Protan membrane down to the substrate and holds it in place without the need for mechanical fixings or adhesives. The system is suitable for both new-build and refurbishment projects. The roof substrate and the membrane’s perimeter fasteners must be airtight. In order to assess the suitability of a particular building, it must be inspected and evaluated by a Protan Technical Services Manager.

Features:
- Suitable for new-build and refurbishment applications on flat or pitched roofs.
- Protan SE membrane is manufactured from pliable PVC reinforced with knitted polyester. The PVC contains stabilizers that provide fire resistance, make the product UV-stable and resistant to high and low temperatures. The membrane remains flexible at low temperatures, during installation and use.
- Protan SE membrane has a unique anti-slip surface texture, which provides a significant safety factor when walked upon in wet weather.

Durability:
- Accelerated weathering tests and performance in service indicate that Protan SE membrane should have a life in excess of 30 years.
- A 1.6 mm-thick membrane may have an even longer life expectancy.
- The use of lighter colours helps to reduce surface temperature and may thus improve the membrane's ageing performance.

Fire Resistance:
- When tested in accordance with BS 476-3, a system comprising 0.7 mm profiled steel decking, 50 mm foil-faced polyurethane insulation and one layer of Protan SE 1.2 mm membrane (mechanically-fixed) achieved an EXT.F.AA rating (the highest possible classification).
- A 0.7 mm-thick profiled steel sloped deck, 0.21 mm-thick Air Vapour Control Layer, 90 mm-thick layer of foil-faced polyisocyanurate (PIR) insulation and one layer of Protan SE 1.2 mm membrane mechanically-fixed with telescopic tube washers and fasteners achieved an EXT.S.AB rating.
- The use of Protan SE membrane with other non-combustible insulants would offer equal performance.

Performance:
- Tensile strength (EN12311-2): >1,050N / 50 mm.
- Elongation at break (EN12311-2): >15%.
- Tear strength (EN13210-2): 210N.

Substrates:
- Concrete.
- Other substrates will be assessed on a project-specific basis by Protan's Technical Services Department.

Product reference: Protan Vacuum System - Warm Roof Construction

Product properties:
Air Vapour Control Layer:
Protan ProFelt Torch-on Ali Air Vapour Control Layer
Type 5U glass-reinforced torch on bitumen felt
As manufacturer's instructions

Insulation:
Expanded polystyrene (EPS) with 1 m² mineral wool underneath each Protan Vacuum Vent
Mineral wool
Protan VacTherm - Layer of EPS/PIR/XPS insulation (thickness according to target U-value) with 50 mm-thick mineral wool above.
Extruded polystyrene (XPS) with 1 m² mineral wool underneath each Protan Vacuum Vent
Polyisocyanurate (PIR) with 1 m² mineral wool underneath each Protan Vacuum Vent
As manufacturer's instructions

Protan membrane:
Type:
Protan EXG Membrane - Specify with EPS and XPS insulation.
Protan SE Membrane

Thickness:
1.2 mm
1.6 mm
1.8 mm - Only available with Protan SE Membrane.

Width:
1000 mm
2000 mm
3960 mm - Only available with Protan SE Membrane.

Colour:
Dark grey
Light grey

Accessories:
Protan Approved Fixings
Protan G 1.5 mm Detailing Membrane
Protan Grip Bar
Protan Laminated Metal
Protan Lightning Conductor Clips
Protan Omega Profiles
Protan Prefabricated External Corners
Protan Prefabricated Internal Corners
Protan Prefabricated Pipe Collars
Protan ProJual Rainwater Outlets
Protan Approved Leaf Guard
Protan Walkway Membranes
Protan Cover Strip

As standard:
Roof deck: Must be air-tight.
Air Vapour Control Layer: Must be air-tight and load-bearing.

Components:
- Protan air-sealing tape.
- Protan fasteners.
- Protan prefabricated details.
- Protan restraint bar.
- Protan vacuum vents.

Options:
Weight of waterproofing membrane:

Protan SE Membrane:
- 1.2 mm-thick: 1.4 kg/m².
- 1.6 mm-thick: 1.8 kg/m².
- 1.8 mm-thick: 2.0 kg/m².

Protan EXG Membrane:
- 1.2 mm-thick: 1.48 kg/m².
- 1.6 mm-thick: 1.88 kg/m².

Accessories:
A wide range of accessories is available, including prefabricated components and Protan Laminated Metal for forming flashings and perimeter details.

Environment:
The system is fully recyclable; there is no contamination because no adhesives or solvents are used during installation. Additionally, the system can be thermally upgraded with ease, as fixings are only used around the perimeter and penetrations.

Durability:
Accelerated weathering tests and performance in service confirm that satisfactory retention of physical properties is achieved. All available evidence indicates that Protan SE membranes should have a life in excess of 30 years. Refer to BBA certificate No 98/3459.

Technical approval:
Further information about the Protan Vacuum roof system can be found in the NBI Technical Approval No 2281.

Maintenance and inspection:
In accordance with BS 6229, Protan recommends that the roof be inspected in spring and autumn for cleaning of gutters; ensuring outlets are clear and free-flowing and without evidence of damage. Special attention should be paid to the Protan Vacuum Vents.

Approvals:
British Board of Agrement - Standard/ Certificate: 98/3459