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Novia Black+ Supreme 125GSM Roof and Wall Breather Membrane (1.5 x 50m)

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Original price was: £79.04.Current price is: £75.10. Inc VAT

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Delivery: 2 - 4 Days
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Novia Black+ Supreme 125GSM Roof and Wall Breather Membrane (1.5 x 50m)

Original price was: £79.04.Current price is: £75.10. Inc VAT

Free Delivery on Novia orders over £1200 (incl VAT)

Delivery: 2 - 4 Days

Everyday Low Prices

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Novia Black+ Supreme 125gsm Roof and Wall Breather Membrane – 1.5m x 50m

Novia Black+ Supreme is a high-quality, strong and versatile 125gsm breathable membrane designed for pitched cold and warm roofs and insulated wall applications. Its 3-layer construction incorporates a microporous core, combining Class W1 water resistance with high vapour permeability, airtight performance and good tensile and nail tear strength.

Novia Black+ Supreme meets EN 13859-1 for pitched roofing and EN 13859-2 for walls, achieves Class W1 water resistance to EN 1928 and complies with Class E Fire Classification.

With an Sd value of just 0.029m, the membrane provides high vapour permeability for effective moisture management within appropriately designed insulated roof and wall constructions.

Supplied as a 1.5m x 50m roll, each roll provides 75m² nominal coverage and weighs approximately 9.5kg.

Why Choose Novia Black+ Supreme 125gsm?

Key benefits include:

  • 1.5m x 50m roll
  • 75m² nominal coverage
  • 125gsm membrane
  • Approximately 9.5kg per roll
  • High-quality roof and wall breather membrane
  • Strong and versatile 3-layer construction
  • Microporous core
  • Suitable for pitched cold roofs
  • Suitable for pitched warm roofs
  • Suitable for insulated walls
  • Class W1 water resistance to EN 1928
  • Maintains W1 classification after ageing
  • Highly vapour permeable
  • Sd value of 0.029m
  • Airtight
  • Good tensile strength
  • Good nail tear strength
  • Class E Fire Classification
  • UKCA to EN 13859-1 for roofs
  • UKCA to EN 13859-2 for walls
  • Tested for BS 5534 wind uplift requirements
  • Low-temperature stability down to -60°C
  • Install according to BS 5534 UV guidance
  • Black face and grey reverse
  • Integrated 150mm overlap line

What Is Novia Black+ Supreme Used For?

Novia Black+ Supreme is designed as a breathable membrane for both pitched roofing and insulated wall applications.

Typical uses include:

  • Pitched cold roofs
  • Pitched warm roofs
  • Insulated walls
  • Timber frame walls
  • Framed construction
  • Residential roofing
  • Commercial roofing
  • New-build projects
  • Refurbishment projects
  • Insulated building envelopes
  • Applications requiring a strong 125gsm breather membrane

Its combination of roof and wall compatibility allows the same high-quality membrane to be used across different elements of a building project.

125gsm 3-Layer Breather Membrane

Novia Black+ Supreme has a nominal membrane weight of:

125gsm to EN 1849-2

The membrane uses a 3-layer construction with a microporous core, providing a balance of strength, water resistance and vapour permeability.

The 125gsm construction provides a substantial membrane for roof and wall applications while remaining practical to handle during installation.

Class W1 Water Resistance

Novia Black+ Supreme achieves:

Class W1 resistance to water penetration to EN 1928

The membrane also retains:

Class W1 water resistance after ageing

This provides tested resistance to water penetration while maintaining the vapour-permeable characteristics required from a roof and wall breather membrane.

Highly Vapour Permeable

Novia Black+ Supreme provides an:

Sd value of 0.029m to EN ISO 12572

This low Sd value indicates high vapour permeability, allowing water vapour to diffuse through the membrane as part of an appropriately designed roof or wall construction.

This supports moisture management within insulated building elements.

Airtight and Breathable

Novia Black+ Supreme is specified as both airtight and vapour permeable.

These characteristics describe two different aspects of membrane performance.

Airtightness helps restrict uncontrolled bulk air movement through the membrane, while vapour permeability allows water vapour to diffuse through the material.

Correct installation and appropriate sealing are important to achieving the intended performance across the complete construction.

Novia Black+ Supreme for Pitched Roofs

Novia Black+ Supreme meets EN 13859-1 for pitched roofing and is suitable for both:

  • Pitched cold roofs
  • Pitched warm roofs

Its combination of W1 water resistance, high vapour permeability and good mechanical strength provides a versatile membrane for a wide range of pitched roof applications.

Novia Black+ Supreme for Insulated Walls

The membrane also meets EN 13859-2 for walls, making it suitable for insulated wall construction.

Typical applications can include:

  • Timber frame walls
  • Insulated framed walls
  • Residential construction
  • Commercial construction
  • New-build projects
  • Refurbishment projects

Its low Sd value supports the passage of water vapour through the membrane while its W1 classification provides resistance to water penetration.

Good Tensile Strength

Novia Black+ Supreme provides tested tensile strength of:

Machine Direction (MD): 285 N/50mm

Cross Direction (CD): 165 N/50mm

These values are tested according to EN 12311-1 and demonstrate the membrane’s strength in both directions.

Good Nail Tear Strength

The membrane provides tear resistance of:

Machine Direction (MD): 125 N

Cross Direction (CD): 120 N

These values are tested according to EN 12310-1.

Good tear resistance helps provide a robust membrane during handling, positioning and fixing.

Elongation Performance

Novia Black+ Supreme has tested elongation values of:

Machine Direction (MD): 70%

Cross Direction (CD): 90%

These figures are measured according to EN 12311-1.

Low-Temperature Stability

Novia Black+ Supreme has a stated low-temperature stability of:

No cracking at -60°C to EN 1109

This demonstrates the membrane’s ability to retain its integrity under the specified low-temperature test conditions.

Tested for BS 5534 Wind Uplift Requirements

Novia Black+ Supreme has been tested for BS 5534 wind uplift requirements.

Roof membrane wind uplift requirements can vary according to factors including:

  • Roof design
  • Roof pitch
  • Geographical location
  • Exposure
  • Installation arrangement

The relevant Novia technical guidance should be consulted to determine the appropriate fixing and sealing requirements for the individual project.

BS 5534 UV Guidance

Novia Black+ Supreme should be installed according to BS 5534 UV guidance.

The membrane should not be assumed suitable for indefinite exposure to ultraviolet light.

Exposure during installation should be controlled according to the relevant technical guidance and project requirements.

Class E Fire Classification

Novia Black+ Supreme complies with Class E Fire Classification.

The membrane should be specified as part of the complete roof or wall construction according to the fire performance requirements of the individual project.

UKCA Roof and Wall Standards

Novia Black+ Supreme is specified as:

  • UKCA to EN 13859-1 for roofs
  • UKCA to EN 13859-2 for walls

This allows the membrane to provide a single solution across appropriate pitched roof and insulated wall applications.

Black Face and Grey Reverse

Novia Black+ Supreme is:

Black on one side and grey on the reverse

The membrane has no printed text or imagery apart from an integrated 150mm overlap line.

150mm Overlap Line

The incorporated 150mm overlap line provides a convenient reference when positioning adjoining membrane sheets during installation.

The actual overlap and sealing requirements should follow the relevant Novia technical guidance and requirements of the individual roof or wall construction.

1.5m x 50m Roll

Each roll measures:

1.5m wide x 50m long

Providing:

75m² nominal coverage

Each roll weighs approximately:

9.5kg

Actual usable coverage will be lower once required overlaps, cutting, penetrations, detailing and general installation wastage are taken into account.

Novia Black+ Supreme 125gsm Specification

Specification Details
Product Novia Black+ Supreme
Product Type Roof & Wall Breather Membrane
Construction 3-Layer with Microporous Core
Roll Width 1.5m
Roll Length 50m
Nominal Coverage 75m²
Roll Weight 9.5kg
Nominal Weight 125gsm to EN 1849-2
Tensile Strength MD / CD 285 / 165 N/50mm to EN 12311-1
Elongation MD / CD 70 / 90% to EN 12311-1
Tear Resistance MD / CD 125 / 120 N to EN 12310-1
Sd Value 0.029m to EN ISO 12572
Water Resistance W1 Class to EN 1928
Water Resistance After Ageing W1 Class to EN 1928
Low-Temperature Stability No Cracking at -60°C to EN 1109
Reaction to Fire Class E
Roof Standard UKCA to EN 13859-1
Wall Standard UKCA to EN 13859-2
Wind Uplift Tested for BS 5534 Requirements
UV Guidance Install as per BS 5534 UV Guidance
Face Colour Black
Reverse Colour Grey
Overlap Guide 150mm Line

Frequently Asked Questions

What is Novia Black+ Supreme?

Novia Black+ Supreme is a 125gsm 3-layer breathable membrane designed for pitched cold roofs, pitched warm roofs and insulated walls.

It combines Class W1 water resistance with high vapour permeability, airtight performance and good tensile and tear strength.

What size is a roll of Novia Black+ Supreme?

Each roll measures 1.5m wide x 50m long.

How much area does one roll cover?

Each roll provides:

75m² nominal coverage

Actual usable coverage will be lower after allowing for overlaps, cutting, penetrations, detailing and installation wastage.

How much does a roll weigh?

Each 1.5m x 50m roll weighs approximately 9.5kg.

What is the membrane weight?

Novia Black+ Supreme has a nominal membrane weight of 125gsm to EN 1849-2.

Is Novia Black+ Supreme suitable for roofs?

Yes. It meets EN 13859-1 for pitched roofing and is suitable for pitched cold and warm roof applications.

Can Novia Black+ Supreme be used on walls?

Yes. It meets EN 13859-2 for walls and is suitable for insulated wall applications.

Is Novia Black+ Supreme water resistant?

Yes. The membrane achieves Class W1 water resistance to EN 1928.

It also retains its W1 classification after ageing according to the supplied specification.

Is Novia Black+ Supreme breathable?

Yes. The membrane is highly vapour permeable and has an Sd value of 0.029m to EN ISO 12572.

What does an Sd value of 0.029m mean?

The Sd value describes a membrane’s resistance to water vapour diffusion as an equivalent thickness of still air.

A low Sd value such as 0.029m indicates high vapour permeability, which is a key characteristic of a breather membrane.

Is Novia Black+ Supreme airtight?

Yes. The membrane is specified as airtight and vapour permeable.

Correct installation and sealing are required to maintain continuity across the completed construction.

What is the tensile strength?

Novia Black+ Supreme has tensile strength values of:

  • 285 N/50mm in the machine direction
  • 165 N/50mm in the cross direction

These values are tested according to EN 12311-1.

What is the tear resistance?

The membrane has tear resistance values of:

  • 125 N in the machine direction
  • 120 N in the cross direction

These values are tested according to EN 12310-1.

What is the fire classification?

Novia Black+ Supreme has a stated Class E Fire Classification.

How does Novia Black+ Supreme perform in low temperatures?

The membrane has a stated low-temperature stability of no cracking at -60°C to EN 1109.

Has Novia Black+ Supreme been tested for wind uplift?

Yes. Novia Black+ Supreme has been tested for BS 5534 wind uplift requirements.

The appropriate installation method should be determined according to Novia’s technical guidance and the requirements of the individual project.

Is Novia Black+ Supreme UV resistant?

The supplied specification states that the membrane should be installed according to BS 5534 UV guidance.

It should not be assumed suitable for indefinite UV exposure.

What colour is Novia Black+ Supreme?

The membrane is black on one side and grey on the reverse.

Does it have an overlap guide?

Yes. Novia Black+ Supreme incorporates a 150mm overlap line to assist installation.

What is the difference between the 1m and 1.5m Novia Black+ Supreme rolls?

Both versions use the same 125gsm Black+ Supreme roof and wall breather membrane.

The difference is the roll width and nominal coverage:

  • 1m x 50m: 50m² nominal coverage and approximately 6.5kg per roll
  • 1.5m x 50m: 75m² nominal coverage and approximately 9.5kg per roll

The 1.5m version therefore provides 50% more nominal membrane area per roll.

What is the difference between Novia Black+ Supreme and Black+ Pro?

Both are strong 3-layer roof and wall breather membranes with microporous cores, W1 water resistance and vapour-permeable performance.

The principal difference from the supplied specifications is membrane weight:

  • Black+ Supreme: 125gsm
  • Black+ Pro: 150gsm

Black+ Pro is the heavier membrane, while Black+ Supreme provides a strong 125gsm option with detailed tensile, tear and vapour performance data.

Do I need to allow for overlaps and wastage?

Yes. The 75m² figure represents the nominal area of the complete roll.

Allowance should be made for membrane overlaps, cutting, penetrations, detailing and general installation wastage when calculating the number of rolls required.

Novia Black+ Supreme 125gsm Roof and Wall Breather Membrane

Novia Black+ Supreme is a strong and versatile 125gsm breather membrane for pitched cold roofs, pitched warm roofs and insulated wall applications.

Its 3-layer construction with microporous core combines Class W1 water resistance with an Sd value of 0.029m for high vapour permeability, together with airtight performance and good tensile and nail tear strength.

UKCA to EN 13859-1 for roofs and EN 13859-2 for walls, Black+ Supreme has also been tested for BS 5534 wind uplift requirements and maintains Class W1 water resistance after ageing.

Supplied as a 1.5m x 50m roll providing 75m² nominal coverage, each roll weighs approximately 9.5kg and incorporates a convenient 150mm overlap line.

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