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KÖSTER TPO Single Ply Roofing Membrane

Third party certifications:

QA Certificate
Certificate type

Thermoplastic polyolefin (TPO), single ply roofing membrane.

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Application

The membranes are suitable for direct exposure to weathering and can be used to waterproof unventilated and ventilated flat roofs, pitched roofs, green roofs, terraces, balconies, roof gardens, as well as for the waterproofing of underground garages and the lining of tanks.

The material has a manufacturer’s 20-year guarantee. There is also a 25-year insurance-backed guarantee available upon request.

Description

Thermoplastic polyolefin (TPO), single ply roofing membrane offering excellent application characteristics, flexibility and weldability. Formulated for easy and uncomplicated jointing of the seams due to a wide welding temperature window. Overlap joints require no chemical cleaning prior to welding.

TPO membrane with embedded glass mesh:

KÖSTER TPO membrane is a polyolefin based thermoplastic roofing and waterproofing membrane with centrally embedded glass fibre mesh. The membrane can be loose-laid (under ballast) or mechanically fastened.

TPO membrane with embedded glass mesh and polyester fleece backing:

KÖSTER TPO F membrane is a polyolefin-based thermoplastic roofing and waterproofing membrane with centrally embedded glass fibre mesh and fleece-laminated underside. The membrane can be fully or strip-adhered with KÖSTER PUR Membrane Adhesive, or fully adhered with hot bitumen. It can also be loose-laid (under ballast) or mechanically fastened.

The membrane overlap joints are always hot air-welded.

Features and benefits:

Does not contaminate groundwater.

UV-resistant

Resistant to root and rhizome penetration.

Does not contain non-molecularly bound plasticizers.

Direct application to EPS insulation is possible.

Low maintenance.

Rot-proof.

Compatible with bitumen and polystyrene.

Acid and kerosene resistant.

Resistant against microorganisms and rodent attacks.

Customizable colours available (subject to minimum order quantity).

Recyclable and safe for health, water, soil and plants.

Free from softeners and chlorine.

CE marked to EN 13956 0761-CPR-0422.

Applications:

The material has a manufacturer’s 20-year guarantee. There is also a 25-year insurance-backed guarantee available upon request.

General information

Uniclass 2015

Pr_25_57_51_66 Polymeric membranesPrimary

J42/10 Warm deck roof covering

J42/110 Warm deck roof covering

J42/120 Inverted roof covering

J42/130 Cold deck roof covering

J42/400 Waterproof membrane

Specification data - Polymeric membranes

Product Reference

KÖSTER TPO Single Ply Roofing Membrane RT 820

With embedded glass fibre mesh. Light grey.

KÖSTER TPO Single Ply Roofing Membrane RT 820 DG

With embedded glass fibre mesh. Dark grey.

KÖSTER TPO Single Ply Roofing Membrane RT 820 F

With additional polyester fleece to underside. Light grey.

KÖSTER TPO Single Ply Roofing Membrane RT 820 F DG

With additional polyester fleece to underside. Dark grey.

Roll width

250 mm

350 mm

525 mm

750 mm

1050 mm

1500 mm

2100 mm

Accessories

None

Laminate metal sheet, 1.4 mm thick, light grey (2 x 1 m)

For forming parapet, gutter and drip details.

Parapet drainage outlets

Pre-formed external corners

Pre-formed internal corners

PU adhesive

For fully adhered fixing.

Roof outlets

Self-adhesive vapour barrier FR, 0.3 mm thick (50 x 1.5 m)

Fire class B2 (DIN 18234), fibre mesh reinforced aluminium vapour barrier. (Sd value: ≥ 1500 m. Calorific value: < 10.500 kJ/m²).

Top hats

For cable or pipe penetrations.

Tube washers and fixing screws

For mechanical fixing.

Unreinforced TPO membrane (52.5 mm wide) RT 820 U

For detailing work.

Vents

Walkway mat TPO/FPO (PE) and ECB, 4 mm thick, light grey (785 x 580 mm)

For non-slip maintenance walkways. Slip resistance: R10. Displacement space: V10.

Standard product features

Roll length:

20 m.

Thickness:

2 mm.

Technical characteristics:

Mass per unit area in accordance with DIN EN 1849-2: 1930 g/m² (Standard), 2215 g/m² (fleece backed).

Watertightness in accordance with DIN EN 1928 (Method B): 10 kPa/24 h watertight.

Exposure to liquid chemicals, including water in accordance with DIN EN 1847: Passed (Method B).

Exposure to external fire in accordance with DIN CEN/TS 1187; DIN 4102-7 and DIN EN 13501-5: Broof(t1).

Reaction to fire: Class E.

Resistance to hail in accordance with DIN EN 13583: Rigid substrate: ≥25 m/s. Soft substrate: ≥40 m/s.

Peel resistance of the overlap in accordance with DIN EN 12316-2: Type of failure: 100% C, no failure in the overlap.

Shear resistance of the overlap in accordance with DIN EN 12317-2: Failure beyond the overlap.

Water vapour diffusion resistance in accordance with DIN EN 1931: µ: 85 000.

Tensile strength in accordance with DIN EN 12311-2: ≥7 N/mm² (Method B). Elongation at break: ≥500% (Method B).Fleece Backed: ≥50% (Method A).

Resistance to shock loads in accordance with DIN EN 12691: ≥750 mm (Method A). ≥1250 mm (Method B). Fleece backed: ≥700 mm (Method A) and ≥1500 mm (Method B).

Resistance to static loading in accordance with DIN EN 12730: 20 kg (Methods A and B).

Tear continuation resistance according to DIN EN 12310-2: ≥200 N. Fleece Backed: ≥350 N.

Folding at low temperatures according to DIN EN 995-5: ≤ -50°C.

Dimensional stability in accordance with DIN EN 1107-2: ≤-0.2 %.

Tear resistance (nail shank) in accordance with DIN EN 12310-1: ≥500 N.

Behaviour under UV irradiation, elevated temperatures, and water in accordance with DIN EN 1297 (1000 h): Passed: Level 0.

Ozone resistance in accordance with DIN EN 1844: Passed.

Exposure to bitumen in accordance with DIN EN 1548: Passed.

Literature

Koster Waterproofing Systems: The Green Pages of Waterproofing and Construction Chemicals

Koster TPO Single Ply Roofing Membranes

Koster TPO Single ply membrane accessories range

Koster TPO Single Ply Roofing Membrane - Reinforced Membrane

Third party certifications

CE Marked: EN 13956:2012 : Waterproofing of flat and sloped roofs