Oldroyd® Xtf is a waterproof, fire-resistant membrane designed to protect tunnels from the damaging effects of dripping water.

It consists of a profiled, studded and grooved flame-retardant polypropylene (PP) sheet, approximately 1mm thick, onto which is laminated a high tensile strength, fire-resistant woven fabric of basaltic mineral fibres.

The polyolefin sheet provides the structure of the membrane and ensures its waterproofness. The basaltic fibre fabric increases its mechanical strength and protects the membrane against fire.

Oldroyd tunnel membranes

Norwegian manufacturer Oldroyd is a leading supplier of membrane systems for tunnels in Scandinavia. Newton Waterproofing is the sole UK distributor for Oldroyd Xtf membrane, a unique fireproof and waterproof product for underground projects.

Key benefits

  • B-s2.d0 fire rating to EN 13501-1:2007+A1:2009

  • Fire resistant for more than 20 minutes at >1000°C

  • Fixing average of 413 N to withstand the extreme negative pressure/suction of high-speed trains

  • Protection of the railway tunnel for a minimum of 60 years

  • Does not require covering, and so the whole of the overnight rail closure can be used for membrane fixing

  • Thoroughly tested in challenging Norwegian and Faroe Island railway tunnels

  • Toxic gas emissions during a fire are less than 10% of the maximum allowed level

  • CO2 formation is less than 20% of the maximum allowed level

  • Halogen free – No chlorine compounds, bromides or fluorides

Typical applications

Tunnel membrane as part of the Newton CDM System.

Suitable substrates

  • Bare rock surface

  • Cast concrete walls

  • Vaults in escape routes

  • Technical rooms (or similar)

Product data

Code: FM1
Roll size: 1.48 x 10m
Colour: Black
Packaged weight: 30kg
Area: 15/m²

Code: FMA1
Mounting kit including polypropylene fixing plugs with gaskets, stainless steel screws and covers x200

Code: FMA2
M-fix flame-retardant screws x200 (for membrane laps)

Code: FMA3
Fire-rated foam x750ml

Technical data

Properties

Standard

Unit

Typical Value

Thickness (approx.)

mm

~ 1,6

Height Total

mm

~ 8

Width

m

1,20 / 1,50

Length, Sheet

m

2,40 – 3,00

Length, Roll

m

5 – 20

Weight

kg/m²

1,6 – 2,0

Tensile Strength, Fibres

MPa

1300

Tensile Strength, Membrane

MPa

> 1000

Softening Temperatures, Fibres

DIN 51730

°C

> 1100

Heat Deflection Temp., Polyolefin

ISO 75 (B)

°C

>120

Moisture Content

ISO 3344

%

<0,2

UL-Classification, Polyolefine

UL 94

1.6 mm

V0

Properties

Standard

Unit

Typical Value

Fire Test, Classification

EN 13509

B-s2.d0

Passed

Fire Test SBI 1

– FIGRA0.2MJ

EN 13823

W/s

<80

– THR600s

EN 13823

MJ

<1

– SMOGRA

EN 13823

m²/S²

<50