Louvre
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Screening & Ventilation Architectural Solutions - Louvre

C-Plex,West Bromwich. Trapezoidal 2UL louvre panels. Front cover image One London Wall, London. Colt provided an elliptical plant room louvre screen for this prestigious commercial office development designed by Foster & Partners.The Main Contractor was Sir Robert McAlpine. FEATURES & BENEFITS Louvre systems are popular with designers for many applications in industrial and commercial buildings. Their purpose can be to control light entry, to provide ventilation whilst maintaining rain defence, to provide screening, or a combination of these. They can also be provided simply for aesthetic...

COLT LOUVRE SYSTEMS Colt offers two generic types of louvre systems: Screening Louvre: Single Bank Universal roll formed Louvre and exruded ‘E’ Series ESC Louvre. Ventilation and Rain Defence Louvre: Double and Triple Bank Universal roll formed Louvre, and ‘E’ Series ERD, a Single Bank extruded rain defence Louvre. Portway School, Bristol Pre-assembled 3UL louvre turrets on top of natural vent shafts.

Technical Standards Specifying louvre is always a compromise, and requires some judgement to take into account the particular needs of each application. At one end of the scale for example a car park may require maximum ventilation but little protection from rain penetration. Alternatively, a plant room containing special machinery or electrical equipment may still need high levels of ventilation but with maximum protection from water entry. There has been a problem for many years in quantifying the performance of louvre systems due to the competing test standards and lack of application...

APPLICATIONS The test environment in the standard, at 13m/s (30mph) wind speed and 75mm/h (3 inches/h) for a period of 30 to 60 minutes, is intended to represent bad Northern European weather conditions. Two performance classifications are provided, one for rain defence and one for aerodynamic performance. Recommendations for the selection of rain defence louvres, based on actual design inlet air velocities (for exhaust louvres take a velocity of 0 m/s, representing the worst case with the exhaust system switched off): Class A Class A The principles of EN 13030 are replicated in the USA...

Screening Louvre DESIGN CONSIDERATIONS COLT SCREENING LOUVRE The principal objective of screening louvre is to obstruct line of sight from normal vantage points by virtue of its design or orientation. Generally each run of louvre will have a continuous appearance unbroken by framing so as to blend in with the building, but it also can be made to provide contrast so as to provide an architectural feature. I What building elements do I want to hide? Colt offers two choices of screening louvre: a single bank 50mm or 100mm pitch roll-formed Universal Louvre 1UL, and a single bank 50mm pitch...

Experian, Nottingham. UPGRADEABLE LOUVRE Establishing the louvre material, colour and louvre blade arrangement is relatively straightforward. However when it comes to rain defence performance this can present problems relating to an appropriate specification, particularly at the stage in a project before full ventilation design requirements have been established. If a basic louvre is specified, there is a risk that water penetration may occur resulting in later problems on a completed project, often with only limited and / or expensive solutions being available. Alternatively, if the need...

SINGLE BANK UNIVERSAL LOUVRE FINISHING OPTIONS OPTIONAL EXTRAS Its consistent appearance and installation flexibility makes the Single Bank Universal Louvre ideal for screening and cladding applications. Single Bank Universal Louvre, 1UL (one louvre deep) is an aerodynamically shaped louvre and has two standard louvre profiles: There are three standard material options for the principal components: There are a large selection of optional accessories such as: I Aluminium I Mild Steel I Stainless Steel (50mm pitch only) I Shallow (50mm pitch) and I Deep (100mm pitch) 1UL also has two...

William Harvey Hospital, Ashford. 1UL/SH inverted louvre panels. PERFORMANCE SPECIFICATION PRODUCT SPECIFICATION PERFORMANCE SUMMARY A multi purpose louvre system shall be provided to achieve minimum resistance to airflow, with louvre blades to be aerodynamically shaped with no sharp edges or protrusions, to ensure the highest efficiency airflow performance. Colt Single Bank Universal Louvre type 1UL having louvre blades at 50mm pitch (shallow section) or 100mm pitch (deep section). I High airflow properties Construction throughout shall be from high quality corrosion resistant aluminium...

Screening Louvre - 1UL Performance Data Note: All dimensions are given as internal, external dimensions will vary depending upon material thickness Shallow section Maximum Unsupported MullionLength

Assembly Side Frame Cill Louvre Blade (Shallow) Intermediate supporting steelwork Mullion External Corner Internal Corner WIND SPEED CONDITIONS 1 UL Effectiveness under 1 UL Effectiveness under 13m/seffectiveness condition 1 UL wind speed under 13m/s 13m/s wind speed conditions wind speed conditions 75mm/hr rainfall

Screening Louvre - ‘E’ Series ESC SINGLE BANK ‘E’ SERIES LOUVRE FINISHING OPTIONS OPTIONAL EXTRAS The E Series is the latest addition to the Colt Universal Louvre range. It is an extruded aluminium, Single Bank Louvre System available in a 75mm pitch configuration. Standard material options for the principal components: There are a large selection of optional accessories such as: ‘E’ Series type ESC offers an alternative solution to screening and cladding applications. It is recommended that ‘E’ Series type ESC should not be installed in exposed locations where rain penetration may not be...

PERFORMANCE SPECIFICATION PRODUCT SPECIFICATION A simple, clean extruded louvre with sharp, crisp edges to give a continuous appearance. Colt Single Bank ‘E’ Series Louvre type ESC having louvre blades at 75mm pitch. Airflow The following minimum aerodynamic coefficients shall be achieved when the louvre panels is tested to EN 13030:2001: Air Inlet - 0.27 Air Extract - 0.26 The above aerodynamic coefficients shall be established as a result of full scale wind tunnel tests. Rain Defence Single bank louvres should only be applied in sheltered locations or where rain penetration may be...