Cupa Pizarras Slate from AJW Distribution

How to: Install a natural slate cladding rainscreen solution

using CUPACLAD 101 Logic / 201 Vanguard from CUPA Pizarras

The problem: Weatherproofing

The main purpose of any building enclosure system is to prevent the wind and rain that strikes the surface of the building from penetrating into the structure’s interior. For protecting walls from the elements, rainscreen cladding systems are very effective at shielding the interior of a building because they offer several layers of overlapping protection.

A rainscreen cladding system usually consists of a load bearing wall, a layer of insulation and a covering material fixed to the building with the help of a supporting structure. This system creates a gap between the insulation and covering material called an air cavity. The combination of a ventilated system together with an insulation system gives numerous advantages in terms of thermal and acoustic properties. It avoids thermal bridges and condensation issues.

For optimum performance the system must allow constant air circulation through the cavity creating a natural convection process. Warm air inside the cavity is lifted and released to the exterior resulting in a continuous ventilation cycle. This so called “chimney effect” is one of the advantageous characteristics of a rainscreen cladding.

The solution: CUPACLAD

CUPACLAD is a ventilated façade solution with CUPA PIZARRAS natural slate. Developed alongside Danish architects and contractors, CUPACLAD® slate cladding systems offer a revolution in cladding applications for natural slate. The use of highly durable tectonic slate, new fixing systems and rainscreen cladding efficiency make CUPACLAD a competitive, totally sustainable alternative for cladding any type of facade.

The natural slate chosen for CUPACLAD systems has been specially selected to meet the requirements of a façade cladding. CUPACLAD systems are timeless, lightweight and easy to install. They adapt to all kinds of architectural creation, both in new construction and renovation, providing a modern and contemporary aesthetic.

Traditional natural slate has been reinvented to make it much easier to install and quicker. In addition to this, the use of a ventilated façade is the perfect choice for external thermal insulation.

CUPACLAD makes possible the installation of natural slate with horizontal orientation, offering new design possibility for contemporary architecture. The beauty and durability of natural slate makes it perfect material for any architectural design.

The development of CUPACLAD fixing method has been the result of a design process carried out by our own engineering team.

CUPACLAD 101 Logic is part of the CUPACLAD 101 series, made up of systems with totally invisible fixings that make our natural slate the main attraction of a façade. The 101 Series also includes CUPACLAD 101 Random and CUPACLAD 101 Parallel natural slate cladding systems.

CUPACLAD 201 Vanguard system uses visible fixings by combining stainless steel clips with natural slate texture to give a modern touch reduce installation times compared to other rainscreen cladding systems.

Installation of a slate rainscreen with INVISIBLE fixings (101 Logic)

Step by step guide:

  1. Metal brackets
    The metal brackets are installed in alternate courses on each side of the vertical profile. It is required to use both fixed point metal brackets (on the upper end of each profile) and brackets with an sliding point to allow for expansion of the profile.
  2. Insulation
    Choose the most suitable insulation material based on the project requirements. Fixing in accordance with the manufacturers recommendations.
  3. Vertical profiles
    Fix the ‘L’ shaped vertical profiles to the metal brackets allowing at least 2 cm for an air cavity. The vertical profiles must be perfectly level before fitting the remainder of the system components.
  4. Ventilated flashing
    Fix a ventilation flashing at the first course of the cladding.
  5. Flashings
    Fix metal flashings at single points (edges, window frames, etc.).
  6. Horizontal profiles
    Fix the horizontal profiles with the vertical ones at each intersection. The horizontal profiles must be perfectly level as their position will dictate the final position of the slates. Fit also an inverted 101 horizontal profil at the first course of the cladding to allow fixing of the first course slate.
  7. First course slate
    Cut a slate to a height of 80 mm approx. Fix it inverted matching the bottom edge of the slate with the first 101 horizontal profile.
  8. CUPA PIZARRAS slate cladding
    Each slate must be aligned with the upper edge of the profile and fitted with two stainless steel. CUPACLAD® 101 self-drilling screws.
  9. Top flashing
    Fix the top flashing.
CUPACLAD 101 Logic Installation

Installation of a slate rainscreen with VISIBLE fixings (201 Vanguard)

Step by step guide:

  1. Metal brackets
    The metal brackets are installed in alternate courses on each side of the vertical profile. It is required to use both fixed point metal brackets (on the upper end of each profile) and brackets with a sliding point to allow for the profile movement.
  2. Insulation
    Choose the most suitable insulation material based on the project requirements. Fixing in accordance with the manufacturers recommendations.
  3. Vertical profiles
    Fix the ‘L’ shaped vertical profiles to the metal brackets allowing at least 2 cm for an air cavity. The vertical profiles must be perfectly level before fitting the remainder of the system components.
  4. Ventilated flashing
    Fix a ventilation flashing at the first course of the cladding.
  5. Flashings
    Fix metal flashings at single points (edges, window frames, etc.).
  6. Horizontal profiles
    Fix the horizontal profiles with the vertical ones at each intersection. The gap between horizontal profiles when fitting a 60×30 slate must be 260 mm. The horizontal profiles must be perfectly level as their position will dictate the final position of the slates.
  7. CUPA PIZARRAS slate cladding
    The clips are fitted to the holes in the horizontal profiles. Each slate is supported by two clips on the lower edge while fitted with another two on the top. At the top of the cladding when joining the gutters or flashing it is necessary to use the 201-V top profile to which the slate must be fitted with two self-drilling screws or rivets.
  8. Top flashing
    Fix the top flashing.
CUPACLAD 201 Vanguard-Installation

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