ALUMINIUM
Many of our corrugated sheets and sandwich panels can be made of aluminium or with an aluminium shell. An exception is our Profit panel, which can be delivered with an aluminium foil as inner shell.
For highest durability and highest quality requirements the sealing washers of O-METALL sealing screws as well as O-METALL caps are generally made of aluminium.
ANTENNA CABLE COLLAR
Sealing of all tubes on roofs. With the help of a self-adhesive rubber seal and sealing screws or rivets, this flexible tube seal can be adapted to any shape of corrugated metal sheet. Available in a single and a double walled version.
ANTI-CONDENSATION FLEECE
O-METALL® Aqua-Therm® anti-condensation fleece reduces the risk of dripping condensation water caused by temperature changes.
BUTYL STRIP
Strongly adhesive, double-sided sealing tape made of butyl rubber for sealing projections (laps) with very good tolerability on many surfaces. It is self-adhesive, solvent-free and with a good UV, water and weather resistance.
BEAD
Corrugations or beads are the elevations in a profiled sheet and panel. A distinction is made between high bead, low bead (valley), the stiffening beads (depending on the profile geometry in the valley) and the overlapping bead (overlap bead).
C-PROFILE
C-profiles are mostly used as wall rails for supporting corrugated sheets, sandwich panels or light panels.
CATHODIC PROTECTION
The cathodic protection (also cut edge protection) is effective for every galvanised steel sheet up to a maximum material thickness of 2mm (depending on the thickness of the layer and the type of galvanisation). As a result, the cut edges, after they have been mechanically cut “cold”, are fully galvanised again within 48 hours after cutting and thus are optimally protected against corrosion.
CORRUGATED SHEET
Corrugated sheets with a trapezoidal profile geometry, which are used for roofs, floors and walls.
END LAP
End lap refers to an overlapping or an extension of the panels from the eaves (rain gutter) towards the ridge (roof top). The overlap dimensions depend on the pitch of the roof (the less roof pitch, the more overlap) but also on the product type. According to the type of product used the observed minimum roof pitch varies. Otherwise, it is recommended to order and to install the panels and sheets in one piece.
EAVE
The eaves are the lowest part of a roof. In many cases, the eaves are the part where a rain gutter is located.
FOAM NOTCH
Foam notch (back cut) refers to the part of a sandwich panel where the foam and inner shell have been cut back and removed. Used for end laps and at the eaves.
FOLDED EDGE
A folded edge aims to give some rigidity to flashing parts and diminish the presence of sharp cutting edges.
GABLE
The gable is the wall or front side of a building that reaches up to the top of the roof and which rises with the roof pitch.
Depending on the shape of the roof, the long sides or, for example, in the case of monopitch roofs, the horizontally high side of a building, are called eaves sides (rain gutter).
GALVANISATION
Unless explicitly mentioned on the purchase order, all steel products from O-METALL are galvanised. Different types of galvanisation processes exist. The type of treatment applied usually depends on whether the sheets are to be used without further colour coating or not. In most cases our sheets are colour coated in addition to the galvanizing.
HIGH-TEMPERED STEEL
Most of O-METALL’s products are made of high-tempered steel. This is a steel which gets a high tensile and fatigue strength by the so-called quenching and tempering treatment in the steel works.
INNER RIDGE
The inner ridge is an edge part for gable roofs. It is mainly used for the assembly of sandwich roofs. It can be placed on the ridge purlins or screwed resp. riveted to the sandwich panels from the inside. We advise to apply 2 strips of sealing tape on both sides of the upper side and then place the sandwich panels on top. Afterwards the gap between the two sandwich panels can be filled with foam or rock wool.
LIGHT PANELS
O-METALL light panels and double skin sheets ensure the incidence of daylight into buildings and are provided with an excellent and durable UV protection. They can be used for roof and wall applications. Synthetic light panels are compatible with many of our profiles, both for sandwich elements (insulated) and for non-insulated profile sheets.
METAL ROOFS
Metal roofs have been around for about 1500 years, mainly lead roofs according to human knowledge. Since then, roof coverings (and of course wall cladding) made of metal conquered all the planet. The best known are roofs made of galvanised steel, although aluminium, copper and zinc are nowadays also commonly used. Thanks to their durability and resistance to bad weather, metal roofs are becoming increasingly popular.
MOUNTING DIRECTION
The mounting direction is determined by the main weather and wind direction or for a few products by the profile geometry.
In principle, products should be mounted opposite the main weather direction in order to keep wind and weather influences on the lap as low as possible.
NIBBLER
Tool adaptor for drilling machines which are used for cutting profiled sheets.
PROFILE GEOMETRY
The profile geometry (also profile cross-section) provides information on all dimensions with regard to effective width, bead height and high beading.
The profile name tells you a lot about the geometry of the metal sheet. Here is an example of the profile TP35.207.5-N:
35: Indicates the approximate height of the upper flange.
207: Indicates the distance from the centre of the high beading to the centre of the next high beading
5: Indicates the number of visible upper flanges after mounting
N: negative layer; this profile is a roof profile
The effective width of the profile can be determined with help of the above indications. In the present case 5 x 207 = 1035mm.
PROFILE SHEET
A galvanised and colour-painted steel belt wound into a coil, which is given a profile geometry and cut to length by a roll-former.
RWA
RWA = smoke and heat extraction system, in the form of a skylight dome or integrated into a continuous row light, automatically wide opening in the event of fire.
ROOF WINDOW
For pitched and flat roofs, we offer roof windows which fit most O-METALL® profiles. Available in different designs, dimensions, with roofing frame, with sun blinds or a simple access roof light for non-insulated roof trusses.
RIDGE
A ridge is the uppermost horizontal border (or, depending on the roof shape, the uppermost horizontal point) of a roof.
SANDWICH PANEL
Sandwich panels are self-supporting elements with an outer covering shell, usually made of metal, and an inner shell, which can be made of metal, synthetic or other materials. Both covering shells are joined shear strength resistant with an insulating core, which can be either polyurethane (for best insulation values) or rock or mineral wool (for best fire protection and sound insulation properties).
SEALING SCREWS
For the mounting of our products, you can get from us suitable sealing screws in various lengths. With drilling tip for fixation in wooden or steel substructures. For substructures made of concrete our innovative screw programme also includes a special screw that can be used without a dowel.
Our screws are in general supplied with an aluminium washer onto which a captive EPDM seal has been vulcanised.
STAINLESS STEEL
For special requirements, we can supply you with profiled sheets and sandwich panels with stainless steel shell.
For an outside installation we recommend to use stainless steel screws only.
SIDE LAP
Lateral overlap of corrugated sheets and sandwich panels. Overlapping should always be done against the main wind direction.
TOP OF THE BEAD
The upper flange of profiled sheets (also high beading) refers to the elevation of a trapezoidal profile, which geometry varies from one profile type to another and which has a very strong impact on the stability or load-bearing capacity.
VALLEY
The valley is the flat part of the roof profile. The width of the valley and the height of the corrugations determine the water drain capacity of the sheet.
WAVE SHEETS
In most cases, wave sheets consist in a sinusoidal wave profile. At O-METALL you can find wave profiles in different dimensions (space between waves, wave height).
Z-PROFILE
Z-profiles are mostly used as roof purlins for supporting profiled sheets, sandwich panels or plastic light panels.
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