Rainscreen Cladding

Rainscreen Cladding involves the installation of a secondary skin of cladding with a ventilated and drained cavity to a new or existing building façade. The system is like a double wall construction that uses the rainscreen outer layer to keep out the rain and an inner layer to provide the structural body of the building preventing excessive air leakage, to provide the structural and wind loading requirements. The outer layer is designed to breathe like a skin while the inner layer reduces energy loss. The structural frame of the building is kept absolutely dry, as water never reaches it or its  thermal insulation within. Evaporation and drainage within the rainscreen cavity removes any water that penetrates between panel joints into the cavity. Water droplets are not driven through the panel joints or openings because the rainscreen principle means that wind pressure and temperature acting on the outer face of the panel is equalised within the cavity. Therefore, there is no significant pressure differential to drive the rain through joints. During extreme weather however, a minimal amount of water may penetrate the outer cladding into the rainscreen cavity. This, however, will drain as droplets down the back of the cladding panel and be dissipated at the base of the system or at the heads of any openings through evaporation and drainage from ventilated mesh closure flashings.  

OSG are specialists in the design, manufacture, supply and delivery of a wide range of premier Rainscreen Cladding systems offering clients and Main Contractors a complete ‘one stop shop’ cladding solution. 

Our team have been involved in numerous prestigious projects throughout the UK including airports, train stations, commercial office buildings, schools, academies, hospitals, leisure facilities, retail environments etc and these projects have varied from the architectural feature cladding of a small entrance area to complete rainscreen facades, facis, soffits, canopies, parapets, cills etc as the business is committed to providing the same level of service and professionalism, irrelevant of the project size, value or location.

Face Fix
Secret Fix
Framework Systems
Flashings / Cills / Reveals
New Build /Re-furb

Other Services


In addition to providing full in-house AutoCAD design services for our own construction projects, OSG offer a complete outsourced solution of AutoCAD design for companies requiring design / draughting solutions but do not have the resources or wish to directly employ a AutoCAD operator on a permanent or even temporary basis.

Health & Safety

OSG offer the complete outsourced solution to your Health & Safety requirements to ensure your business is fully compliant in all aspects of the very latest H&S legislation, with a cost effective solution tailored to meet your specific needs and budget.


From our Midlands based facility, OSG undertake a wide range of in-house manufacturing and fabrication services, producing an impressive range of architectural metal encasement systems and cladding accessories, to more bespoke architectural solutions including column casings, internal wall linings, lift reveals and specialist joinery items.

We Install