bailey total building envelope cpd: rainscreen cladding

Specifying for Performance

Importance of Correct Specification of Rainscreen Cladding Systems

Our Product Portfolio

• Solar Roofs

• Bolt-on eaves

• Complete fascias, gutter and soffit assemblies

• Extruded feature channels

• External gutters & downpipes

• Rainscreen Cladding

• Coping/Capping

• Louvre's

• Flat Roof Membranes

& Accessories

• Green & brown roofs

• V-Plank Ceilings

Our Rainscreen Portfolio

• Platinum – Cassette System

• Prima – Recessed Tray System

• Synergy – Hook On System

• Zenith - ACM Bonded

• Summit - ACM Recessed Fixed

• Aluminum:

• Anodisied

• PPC (Chrome Free)

• Standard

• Super durable

• Metals

• Stainless steel

• Zinc

• Core 10

• Other

• Embossing

• Perforated

Finish Options

The History of Rainscreens

• Centuries old technology

• First modern rainscreens were timber, 1940’s, Scandinavia

• Alcoa Building, Pittsburgh, USA, 1952

• The term “rainscreen cladding” adopted 1970’

How do rainscreens work?

Insert SK01 and refer to accompanying notes

Pressure Equalised

Insert SK04And refer to accompanying notes

(Pressure moderated)

Pressure Equalised

• Cavities are compartmentalised

• Openings calculated to allow rapid ingress and egress of air

• Water ingress reduced by ‘equalisation’ of internal and external pressures (pressure moderated system)

• Drained above compartment levels

• Suited to tall areas of rainscreen.

• Design intensive

• High pressures generated at corners require that the centres of vertical compartments are reduced

Cavity barriers

• Fire and smoke spread in rainscreen cavities is particularly dangerous

• It may travel more rapidly in the cavity than on the outside face of the cladding

• It may remain undetected by building users or Firefighters.

• Cavity barriers will limit the spread of fire and smoke

Example – Structural framing systemInsulation within stud zone

*Dew point

VCL + Plasterboard

30mm insulation board

150mm quilt insulation

Cementitious board

Vapour control layers

Thank you