JUAL

Ventilation cowl with Fast Flash

The flashing is based on the standard 200x200 mm flashing in aluminium. The flashing can be installed on roof surfaces with a pitch of 11-55° with factory-integrated lead-free mouldable material Fast Flash, ensuring a tight seal on the roof.

Tight and flexible solution for penetrations in pitched roofs

For roof penetrations for ventilation and exhaust pipes, it is essential to ensure complete tightness around the opening – regardless of the roof pitch. JUAL’s ventilation cowl with black Fast Flash has been developed specifically for this purpose, combining high functionality with great installation flexibility. The product is based on our standard cowl (200 x 200 mm) and is available in either black aluminium or zinc, making it suitable for both traditional and modern roof surfaces.

This model is fitted with factory-mounted Fast Flash, a lead-free, formable sealing material that ensures watertight installation on roof pitches from 11° to 55°. This makes the solution ideal for a wide range of roof types in both new builds and renovation projects.

What is Fast Flash – and why is it an advantage?

Fast Flash is an environmentally friendly, lead-free sealing material consisting of a formable aluminium base with a self-adhesive butyl backing. It can be adapted to complex roof shapes and structures, ensuring a tight and secure seal around the cowl – even on corrugated or uneven roof surfaces. The black surface also provides a discreet and aesthetic appearance that matches most roofing materials and colours.

By choosing a ventilation cowl with Fast Flash, you not only achieve easy installation but also a long-lasting and maintenance-free seal that effectively protects against water ingress.

Flexible installation on pitched roofs

One of the major advantages of this ventilation cowl is its wide applicability on roofs with slopes from 11° to 55°. This means the product covers everything from low gable roofs to steeper roof constructions. Regardless of the roof design, Fast Flash allows for quick adaptation and tight installation without the need for lead flashing or custom-made fittings.

Typical applications include:

  • Mechanical ventilation
  • Soil vent pipe ventilation
  • Cooker hood exhaust
  • Passive ventilation in roof spaces
  • Venting from technical installations

Aesthetics and functionality in one

The ventilation cowl is not only functional but also visually integrated into the roof design. The black surface creates a discreet look that blends naturally with dark roof tiles, roof sheets and modern bitumen roofing.

The combination of precise design and formable flashing makes the cowl an obvious choice for contractors, architects and craftsmen with an eye for detail.

The ventilation cowl with black Fast Flash ensures a tight and flexible installation on pitched roofs with slopes from 11° to 55° and is available in black aluminium or zinc with formable, lead-free flashing that provides long service life, low maintenance and an elegant, discreet appearance – ideal for both new builds and renovation projects.