GreenCoat Intalok® Rainscreen Cladding - Colour Coated Steel

Manufacturer guidance

Rainscreen cladding does not have any specific requirement with regard to the insulation.

Insulation must be structurally self-supporting or supported when installed so that it will not sag and form unvented voids or cause loss of thermal efficiency. An insulation used as a directly supporting substrate must have a minimum compression strength of 50 kPa (0.5 kg/cm²) with deformation limited to a maximum of 10%. The insulation must also be dimensionally stable up to 100C.

All insulation must be kept dry and protected prior to metal covering being laid.

Manufacturer guidance

The breather membrane must comply with EN 13859-2 for walls and must also be CE compliant.

The breather membrane must be fully supported, lapped and sealed and then further sealed to all surrounding abutments and surface penetrations.

A breather membrane is commonly used as a separating underlay, when the metal is being used in conjunction with a metal substrate, to reduce noise.

Manufacturer guidance

All associated flashings to match can be fabricated from coil by Metal Solutions Ltd as per typical details and industry standards.

Associated rainwater goods in various sizes and profiles are available in the same material. Consult manufacturer for details and insert requirements.

Manufacturer guidance

GreenCoat S280 Pural BT Finishes

Manufacturer guidance

300 mm wide panels, narrower widths are also available.

Panel lengths are often limited to 6 metres long, although longer lengths may be considered. Variable width possible.

Consult manufacturer for details and insert requirements.

Manufacturer guidance

Fixings to suit substrate.

Manufacturer guidance

Vapour Barrier membranes must comply with EN 13859-2 for walls and must also be CE compliant.

For fully supported metal cladding the VB must have a minimum water vapour resistance of 4000 MNs/g and comply to BS SO 12572. The VB must have a resistance against a supported column of water 2 m high for a period of 15 minutes to comply with DIN EN 20811.

All cladding must have a Vapour Barrier regardless of being ventilated, unventilated cold or warm in design. The VB must be positioned behind the insulation and on the warm side of the construction.