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Ampatop F black plus – UV-stable black façade membrane for open joints with integrated tape (75 m² roll)

Product information "Ampatop F black plus – UV-stable black façade membrane for open joints with integrated tape (75 m² roll)"

Ampatop F black plus is a two-layer, highly tear-resistant façade membrane that has been specially developed for use behind façade cladding with open joints. Thanks to innovative monolithic TPU technology and a high-quality TPU coating on a microfibre non-woven backing, it offers exceptional protection against UV radiation and the elements. 

A key quality feature is its proven durability: whilst the standard specification requires only 336 hours of UV exposure, Ampatop F black plus has successfully passed the artificial ageing test involving 5,000 hours of UV irradiation. This enables a 10-year product warranty for joint widths of up to 50 mm (or 40 per cent joint coverage). 


Key features and benefits:
  • Maximum UV stability: Designed for long-term exposure behind open façade joints.
  • Integrated bonding technology: Fitted with an integrated tape for quick and windproof bonding of overlaps.
  • High mechanical strength: With a weight per unit area of 220 g/m² and high ultimate tensile strength, it ensures safety during and after installation.
  • Long-term exposure to the elements: Can be left exposed to the elements for up to 3 months prior to the installation of the final façade cladding.
  • Highly vapour-permeable: With an sD value of just 0.09 m, it ensures excellent moisture transport from the structure to the outside.

Technical data at a glance:
  • Roll dimensions: 1.5 m x 50 m (75 m²)
  • sD value: 0.09 m
  • Resistance to water penetration: Class W1
  • Temperature resistance: -40 °C to +80 °C
  • Maximum tensile strength: 300 N / 5 cm (longitudinal) and 340 N / 5 cm (transverse)
  • Max. joint width: 50 mm (max. 40 per cent)
  • Fire behaviour: Class E in accordance with EN 13 501-1

Installation tips for Ampatop F black plus

Laying and fixing:

  • Alignment: The sheet can be laid horizontally or vertically. The black-coated side must always face outwards.
  • Fixing: Stretch the membrane taut and secure it using, for example, stainless steel staples. Fixing must be concealed within the overlap area (minimum overlap: 10 cm).
  • Mechanical securing: Final securing (e.g. counter-battens) must be carried out immediately after installation. Use Ampacoll ND pads or Ampacoll ND tape to ensure the nails are properly sealed. 


Waterproofing and connections:
  • Overlaps: Seal these to make them wind- and rain-tight using the integrated tape, Ampacoll Profix or the acrylic tapes Ampacoll UV / UV flexx.

  • Details: Sealing of penetrations (ventilation outlets, cables, balcony fixings) and window junctions must be carried out professionally. Ensure that no adhesive is visible.

  • Substructures: Bonding to metal profiles in the insulation layer is carried out using Ampacoll Profix. Profiles must have a minimum width of 4 cm (maximum spacing horizontally/vertically: 1.45 m).


Important construction notes:

  • Insulation layer: The insulation must completely fill the cavity, be laid flat and secured in place. The membrane must not be allowed to bulge or be pushed out, so as not to compromise wind-tightness.

  • Spot fixing: For wood-based materials or compression-resistant insulation materials, bonding with Ampacoll Profix at 70 cm intervals (horizontally and vertically) is recommended, particularly when using individual brackets.

  • Avoiding penetrations: Protruding fixings must be split at the insulation level (e.g. two-part brackets with clamping flanges). The membrane must not be penetrated by these fixings.

Areas of application: Interior and exterior walls, Interior wall
Length: 50 linear metres (75m²)
Manufacturer: Ampack
Packaging: Roll
Pack size: Roll 50 m
Product category: Wall
Product group: Building sealing
Product line: Ampatop F black
Shipping: Collection available, Parcel shipping
Width: 150 cm

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