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July 2010
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Modifying existing winch and cable controlled systems using single use APS control systems and a daily ventilation system per section. Do I have to replace the existing vents? Is it possible to modify the vents? And do you have this type of equipment, if it is available?

Renovating a facility classified on environmental protection grounds (ICPE) involves several constraints which must be taken into account:

Above all, the heading under which the facility is classified must be identified. The best known is heading 1510, which requires declarations to be made, but there are other headings, such as 2662, 2663, etc, which may apply depending on the products stored. Each heading may refer to rules designed for different types of merchandise.

Taking the case of 1510, the rules are as follows:
- the building must be divided into cells, which must be 3000m2 if there is no sprinkler system, or 6000m2 as applicable. The cell separations must comply with the compulsory fire rating.
- once the building has been divided into cells, each cell must be divided into sections of 1600m2 maximum.
- surface area must be calculated to 2/100 of the AFA (Aerodynamic Free Area) in relation to the floor, section by section.
- All NSHEV (Natural Smoke and Heat Exhaust Ventilators) must be equipped with a thermofuse.
- Servo-control: each section must be controlled from one single dual zone control panel (if over 500m2) and must be able to be activated from a point opposite each cell (addition of an open-only control device).
- Fresh air supply systems with a surface area equal to the AFA of the largest section are produced using facade openings, inlets or doors opening on to the outside, cell by cell.

For your project, it is not possible to retain winch NSHEVs and convert them into pneumatically controlled NSHEVs. However, you can opt for an adaptable upstand solution which will allow you to make no alteration to the waterproofing and to equip your facility with CE equipment.

For the control unit, it is perfectly possible to adapt ventilation panels linked to a compressed air network in order to manoeuvre daily ventilation devices.


If you need any further information, please contact our costing department, who will be able to offer you a solution which satisfies your requirements.

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Is condensation on PCA panels normal?

The temporary condensation which appears on the PCA panels is a natural phenomenon known to manufacturers (and recognised in technical opinions issued by the CSTB (Scientific and Technical Centre for Construction) concerning products using PCA).
PCA fillings (or even domes) cannot form part of a hermetic double glazed unit. The plastic material is slightly porous and it is not possible to produce a joint which is completely watertight to water vapour to seal the cells.
This temporary phenomenon (caused by temperature differences) does not impact on mechanical resistance or the quality of the PCA panels.
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I’m looking for a skylight with a laminated glass partition. Do you make this type of product or are your products only available in polycarbonate?

We do not offer product solutions featuring laminated glass. The fillings available are 10 or 16mm PCA (multilayer polycarbonate) or polymethyl methacrylate (PMMA) domes.

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I’m looking for a manual or electrical opening system for an existing roof access measuring 120x120, at a height of 3.5m.

Hexasteel Access offers roof access in addition to smoke and heat extraction and overhead lighting.
It is available in 120x120 and can be opened electrically, pneumatically or by winch.
For any other request, please contact the sales department on +33 (0)247 553600
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CE marking and heat loss coefficient

Frequently asked questions:

Are heat loss coefficients modified?

Is there any impact on products with relation to heat regulations RT2000 or RT2005?

Answer:

CE marking does not deal with heat insulation. However, possible modifications to product characteristics in order to provide better heat insulation must not alter the declared performances covered by CE marking (for example: opening time, snow load, etc.)

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Where can I find slate blue steel cladding to renovate a Hexaonde skylight, steel profile (spacing 205, wave 40)?

You can consult our profile choice guide (available under the “download” heading) or use our online tool to choose your profile according to the type of device and type of cladding (“products” tab, dry roofs, choose your device, the type of cladding and consult the list of profiles available).
Our sales department is available to advise you and give you the delivery conditions.
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Rooflight dimensions: which figures indicate the width and the length? And in the case of skybelts, do you refer to a series of rooflight portions with precise unitary dimensions or a total length?

The width corresponds to the rooflight chord, in other words the width at the base of the bent section (width of the upstand shaft). The length corresponds to the length of the frame.
For skybelts, we refer to the total length.
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Is there any product standard for smoke vents ?

Yes, the standard applying in the european countries (and sometimes even in external countries who do not have any "home" standard is the EN 12101-2. This norm is clearly mandatory since 2007 in all countries part of the European union
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What is this EN norm 12101-2 consisting of ?

It is a norm which describes the different tests (cycles, snow load, temperature, free aerodynamic surface...) the smoke vents should pass. This norm brings the advantage of having a uniform method of testing and qualify the smoke vents in the different countries, which was not the case before (there were country norms like NF, DIN..)
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Is this norm also indicating how many smoke vents should be installed on the roof or in the façade ?

No, even if the product standard is uniform, every country sets its own methods of calculation in relation to the buildings (factories, commercial centers, logistics, staircases...)
Some countries which do not have any clear regulations are sometimes applying the calculation norm EN 12101-5.
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Who has the right to give the CE marking ?

Only the manufacturer of the smoke vents is entitled to provide a CE marking. This product can only be CE marked in case of a factory fully-preassembled and tested smoke vent
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What specific smoke ventilation solutions can Hexadome provide

Hexadome can provide under others :
- smoke vents with today the highest available aerodynamic coefficients in the market (0,76 for the + version)
- higher size of the smoke vent (fully factory preassembled and tested) till 2x3m and 2,3x3m
- a full offer of smoke vents for roof, for façade and control systems
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