• Frigo Panel
    Frigo Panel

    The solution for Industrial refrigeration is arkhon Frigo panels. Our specially designed geometry system joint and the diversity in thicknesses from 20mm up to 200mm offer the best performance in each use. Arkhon Frigo panels provide reliable insulation conditions from +60oC-50oC.

  • Horizon Panel
    Horizon Panel

    Thermally insulating polyurethane panels, with hidden joints and ability to be mounted both vertically and horizontally. Smart hidden joints with double locks, ensure continuous watertight surfaces with unique thermal and sound insulation.

  • Sky Panel
    Sky Panel

    Arkhon's thermally insulating polyurethane panel, Sky, is the best solution for cost effective constructions with spectacular aesthetics.

  • Purlings
    Purlins

    High strengh zinc-coated steel Z & C purlins. The most important part for an efficient, lightweight and secure construction.

  • Roman Tiles
    Roman Tiles

    Supreme Arkhon technology, has evolved roman tiles to bring your building's eco friendliness to the next level, without sacrificing aesthetics.

How to use this section


Use the tabs on the right to navigate through various properties of this product. Right beneath those tabs you will find more information about our polyurethane panels. You can navigate there by clicking the underlined links. The active menu will always be highlighted in blue-ish color. If you have any difficulties using our website contact technical support

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Sky Polyurethane Panel


  • General Description

    The Polyurethane insulated arkhon sky panel is an excellent solution at low cost with unique aesthetics. The unique in greek market available from 20mm to 100mm in 7 different thicknesses in order to cover every need of building roofs.

  • Product Applications

    The arkhon sky design facilitates the installation of photovoltaic panels on them as well as the thin pv film pre-installation before the final placement.

    The arkhon sky can be used as a thermo insulating tile roof basis when speed and high quality insulation are required. The resistance to large spans, the small slope of the roof and the internal wood texture, makes it ideal.

  • Geometry & Weight of Arkhon Sky

    Arkhon Sky 3

    Polyurethane panel thickness (mm) 20 30 40 50 600 80 100
    Total panel height (mm) 58 68 78 88 98 118 138
    Weight kg/m2 (steel 0.50mm) 9.60 10.01 10.39 10.79 11.19 11.99 12.79

    Arkhon Sky 5

    Polyurethane panel thickness (mm) 20 30 40 50 600 80 100
    Total panel height (mm) 58 68 78 88 98 118 138
    Weight kg/m2 (steel 0.50mm) 10.17 10.56 10.89 11.29 11.69 12.49 13.35

    Maximum scale tolerance

    Length (ISO 2796) L ≤ 3m ±2mm
    L > 3m ±2mm
    Width (ISO 2796) ±2mm
    Thickness (ISO 2796) D ≤ 100mm ±2%
    D ≥ 100mm ±2%

    Polyurethane Properties

    Density (ISO 845) 40-42 Kg/m33
    Closed cells percentage 98%

    Available Lenghts

    We can offer polyurethane panels lenght of up to 15 meters due to shipping restrictions, if you need bigger lengths please contact us.

  • The load tables below have been created using EN 14509 standards. Values are calculated based on steel sheets thickness of 0.5/0.5mm minimum thickness of 1.5mm and width 40mm and in max allowed deflection of L/200.

    • Simple Span
      Panel Thikness
      Supports spacing (m) Multiple Span
      Panel Thikness
      100 80 60 50 40 30 20 20 30 40 50 60 80 100
      Max Load Capacity kg/m2 steel Max Load Capacity kg/m2 steel
      0.5/0.5
      489 421 344 292 260 220 155 2 190 270 358 471 558 649 731
      370 327 280 250 200 140 85 2.5 145 210 292 378 441 522 598
      300 270 220 180 130 85 35 3 67 130 192 250 300 355 421
      235 215 160 120 86 50 - 3.5 25 90 130 180 220 280 348
      200 170 115 85 60 - - 4 - 60 90 110 170 220 250
      160 130 82 62 - - - 4.5 - - 70 90 120 178 200
      110 100 62 - - - - 5 - - - 70 90 130 160
      0.6/0.6
      510 443 366 315 278 235 173 2 208 290 379 490 571 670 752
      390 350 300 268 214 150 97 3.5 158 225 284 382 465 548 642
      330 289 235 193 139 91 43 3 74 139 204 268 325 367 437
      270 230 171 128 92 54 - 3.5 - 96 139 193 235 300 375
      230 182 123 91 64 - - 4 - 64 96 118 182 235 300
      175 139 88 66 - - - 4.5 - - 75 96 128 190 230
      123 107 66 - - - - 5 - - - 75 96 139 200
    • Simple Span
      Panel Thickness
      Supports spacing (m) Multiple Span
      Panel Thickness
      100 80 60 50 40 30 20 20 30 40 50 60 80 100
      Max load capacity kg/m2 steel Max load capacity kg/m2 steel
      0.5/0.5
      620 510 408 345 295 250 185 2 246 329 418 481 579 730 806
      448 374 290 265 220 170 105 2.5 152 235 295 372 448 531 631
      330 280 235 200 160 110 45 3 87 170 215 270 323 443 506
      272 225 185 140 110 75 - 3.5 32 115 165 200 248 338 400
      220 178 130 95 75 - - 4 80 115 150 198 250 342 370
      170 130 96 70 50 - - 4.5 - 55 86 105 155 210 285
      140 110 73 - - - - 5 - - 62 82 108 150 205
      0.6/0.6
      630 530 421 361 313 268 203 2 265 348 438 500 598 719 830
      467 390 310 284 235 182 117 2.5 168 251 372 388 467 552 653
      350 298 251 214 171 118 53 3 99 182 230 298 341 462 522
      292 241 198 150 118 80 - 3.5 40 123 177 214 265 359 428
      240 190 139 102 79 - - 4 - 86 123 161 212 268 370
      190 139 103 75 54 - - 4.5 - 59 92 112 166 225 306
      160 118 78 50 - - - 5 - - 66 88 116 161 227
  • Cross Sections - Profiles

    Arkhon Sky is available in two different shapes for roofs depending on the required service load (eg: snow)

  • Flashings for Arkhon Sky applications

    For proper application of Sky polyurethane panels, certain special parts are required in order for the final project to be totally insulated. These parts also ensure the good visual results of every building that is made by Arkhon Panels.

    More Accessories
  • Arkhon Sky joint type

    The dynamic of proper joint.

    Regardless of the type of project designed with arkhon Sky panels, there will always be a corresponding panel for specific requirements, whether they are expected to result in the aesthetics of the building or the high thermal insulation.

    In arkhon’s full technical guide there are charts that refer to thermal insulation properties of arkhon Sky panels when installed by professionals. The competence to insulation without discontinuities is based on the specially researched and designed joint of panels.

    New design with a recess in the latch

    1. Prevention of capillary action and rust on the link
    2. Silicone is not required in the joint
    3. Water-resistant
    4. U-Value factor
    5. Without thermal bridges or gaps, no risk of crystallization
    6. Uninterrupted insulation
    7. Roof slope from 4o
    8. Special color coatings for minimum need of maintenance
  • Energy Efficiency Data of Arkhon Sky Panel

    Our Arkhon Sky Polyurethane panels are manufactured according to European Union Standards ΕΝ 14509 (CEN/TC128/SC110).

    Thermal Transmittance Properties

    Thermal Transmittance properties of Arkhon Panels were calculated using tabular data from ΕΝ 13165 standard.
    Note: Thermal conductivity with theoretical maximum of λ = 0,022 W/(mk).

    Thermal Transmittance

    Thickness (mm) R U K
    20 1.004 m2K/W 0.813 W/m2K 0.752 K/m2
    30 1.397 m2K/W 0.713 W/m2K 0.616 K/m2
    40 1.790 m2K/W 0.557 W/m2K 0.480 K/m2
    50 2.138 m2K/W 0.465 W/m2K 0.402 K/m2
    60 2.658 m2K/W 0.375 W/m2K 0.323 K/m2
    80 3.690 m2K/W 0.270 W/m2K 0.233 K/m2
    100 4.328 m2K/W 0.230 W/m2K 0.198 K/m2
  • Panel Surfaces

    Technical characteristics of steel (ΕΝ 10169-1/03 - ΕΝ 10142/00 - ΕΝ 10147/00 & ΕΝ10142/00)

    Quality Steel DX51D or S320
    Thickness 0.30mm – 1.00mm
    Coating (Z) Zing or (AZ) Galvalume or (ZM) Magnelis
    Tensile strength EN 10142/00

    Coating Characteristics

    1. 1. Organic Polyester Paint EN 1069-2/99. Paint thickness up to 25/5 mic.
    2. 2. PVDF Organic Paint. Paint thickness 25-50mic.
    3. 3. Galvanized Steel with PVC coating. Lamination thickness 120 mic*.
      *Suitable for sanitary clean rooms. PVC is available in RAL9002 color.

    Additional Surfaces

    Upon request we can meet special demands for extreme or unusual environmnets, such as farm houses, sea salt processing factories, acidic environments etc

    We can offer:

    • Stainless steel
    • Aluminum
    • Copper
    • Alupaper
    • Craft Paper
    • Embossed Alufoil
    • Agricultural Fiberglass

    For special surfaces, please contact us directly.

  • Support & Waterproofing equipment

    Properly mounting our panels require a series of connecting materials that Akrhon can provide depending on your project (self-piercing bolts, washers etc).

    We also provide special materials for waterproofing constructions (like butylate string, foam gaskets etc) that are subject to very humid environments.

    For bolts with longer piercing ability, please contact us.

    Panel thickness (mm) Bolt Type Penetration ability
    30 6.3 x 50mm 8mm
    40 6.3 x 60mm 8mm
    50 6.3 x 70mm 8mm
    60 6.3 x 80mm 8mm
    80 6.3 x 100mm 8mm
    100 6.3 x 120mm 8mm
  • Arkhon Panels Energy Efficiency Data

    Our panels are manufactured according to the European Standard ΕΝ 14509 (CEN/TC128/SC110).

    Acoustic efficiency

    Arkhon panel acoustic efficiency has been calculated with the use of specialized software. The results in the following chart are based in arkhon sky 80mm.

    Sound Reduction Index (SRI)

    Frequency Hz SRI dB
    125 17.2
    250 20.0
    500 23.2
    1k 23.4
    2k 23.2
    4k 40.5

    Air Tightness

    According to EN 14509 and EN 1214, the air permeability must not exceed 10m3/Ω/m2. As in all previous tests, so in the air tightness test, Arkhon panels surpass these limits.

    Water Sealing

    The basic compliance standard for sealing control in polyurethane panels is EN 12865. The model requires attaining a pressure seal 600 a under normal conditions. Laboratory tests showed that arkhon panel is watertight up to the pressure of 1070 Pa, far beyond the requirement of the system.

    Fire behavior

    PUR : Β2 – Β3

    PIR : 100mm RE130

    Environmental Care

    Our company uses environmentaly friendly policies with reusable materials and we produce polyurethane without harmful materials HCFC & CFC.

    Images showing how Environmentally friendly manufacturing of Arkhon Panels is
    Images showing how Environmentally friendly manufacturing of Arkhon Panels is
    Images showing how Environmentally friendly manufacturing of Arkhon Panels is
  • Packing – Storage - Handling

    All arkhon panels are packed in the factory and protected to ensure they arrive on site in first class condition. The number if pieces in each pack vary from product to product because of their shapes.

    In all cases however the panels are packed horizontally, with panels lying one on top of another, with additional anti damage protection to all sides and ends. The entire pack is wrapped in plastic film to keep the panels clean.
    The number of panels in each pack varies depending on panel thickness, and customer requirements. Normally the maximum height of each pack is approximately 1100 - 1200mm. Each pack is labeled with the customers name and contents.

    Panels are normally delivered to the site by road transport, the number of packs depending on panel and pack size. The packs are separated with polystyrene blocks, which create gaps between the packs to allow lifting straps or forklift tines to be inserted. It is the customer’s responsibility to arrange lifting equipment and labor to unload the packs.
    This usually requires using a crane, with or without a lifting beam, or a forklift, depending on panel length and weight. When hoisting packs or panels into position protect the edges if necessary to avoid damage. Use flat slings and not chains for hoisting. Packs of panels up to 6 meters long can be lifted either with a forklift, or by crane with lifting straps, as shown below.

    Σχεδιάγραμα δεματοποίησης και μεταφοράς των Arkhon Panel

    Note: Care must be taken to ensure the forklift tines do not damage the bottom panel, and similarly when using straps, protect the edge of the panels to prevent local damage. For panels > 9.0m use of a slip-on fork spreader is recommended to distribute load across its full length to avoid panel damage and "sagging".

    Receipt of Goods

    All materials arriving on site should be checked promptly against relevant advice or delivery notes to ascertain correct quantities, specifications and lack of damage. Any shortages or damage should be reported within 24 hours of receipt of goods on site.

    Site Storage

    It is often necessary to store packs of panels on site for a period before they are fixed. To ensure that the panels remain in prime condition until they are installed the following precautions should be taken.

    • Store packs off the ground and on a slope, so that should rainwater penetrate the wrapping water will drain away. Support the packs evenly with timber bearers spaced at 1.5 meters. Bearers should always be placed one directly above another
    • If packs cannot be kept in a building they should be covered with a weatherproof sheet ensuring that the sheet drains water away effectively and does not allow ponding on top of the pack. It should also allow air circulation through the stacks of panels.
    • Protective film applied during production process should be removed while installing the panel, however no later than two months from date of purchase. After short-term exposure to weather conditions the film may start to crack, making it difficult to remove.
    • Store packs in a secure area, where they will not be damaged or stolen.
    • Inspect the storage site and the packs regularly to ensure the panels remain in good condition
  • Panel Terms of Usage

    SUBJECTAND PARTIESTOTHE CONTRACT

    The General Sales Terms hereby rule all the sales of products (from now on the " Products" manufactured or sol d by t he manufacturing company or the supplier (from now " The Seller") to the customer owner of the related invoices (from now on " The Customer") and take priority on every different clause or forecast (even though not specifically disputed by THE SELLER) which is inserted in modules, offerings or other documents. The Sellers reserves the right to change Its Products - at any time and without notification - or to improve them as it sees fit or necessary.

    ORDER - APPROVAL

    The Customer 's order, that must be written using the ordering forms prepared by THE SELLER, must be considered as a proposal and it is irrevocable from The Customer for 30 (Thirty) days after it has been sent to The Seller. The order becomes binding once the Customer receives the written order confirmation from the Seller, which has approval value and it is the only document binding the two parts and ruling the contractual relationship, concerning everything not stated in the "General Sales Terms" hereby. If the order confirmation includes the supply of different type of Products and/or multiple shipping, every type and/ or shipping is to be considered autonomous in respect to the other by virtue of contract.

    MATERIAL DELIVERY, SHIPPING AND TRANSPORT

    The delivery terms stated in the order confirmation are calculated in working days, they are not essential and they can be subject to changes; the Seller will notify the Customer those changes as soon as possible. Anyway a tolerance of 15 days is allowed. Moreover, partial deliveries are always allowed.

    The Seller will not be held responsible to the Customer for delays, losses, damages, costs or expenses caused by for instance, but not limited to - industrial actions (even if business strikes), lockouts, transport blocks or suspensions, chance, fires, import prohibition s, raw material delays or lack of supply, power source limitations, raw material scarcity or absence, adaptation to law regulation, government measures, right full or not, insurrections, war or similar, natural catastrophes, embargo, and any circumstances beyond reason able control. The Seller will not be held responsible for those events not even if, when they happened, the delivery were already late in respect to the contractual terms. If the causes of the delay last beyond 30 (thirty) days, the Seller will have the option to rescind the contract without this implying the Customer's right to be refunded for t he loss attributable directly o r not to t he delay. When t he agreed terms of delivery expire, within 15 (fifteen) calendar days from t he reception of t he Product -ready notification, the Customer will have to pick up the ordered Products, or, in case of recipient delivery, the Customer will have to request the shipping.

    Once this date is expired, the Products can be stocked outdoors, and this will relieve the Seller of any responsibility for the Product contingent flaws in consequence of the exposition to the weather; any warranty for the Customer will expire and he will be charge d extra movement and stocking cost of 1% of t he Product value per stocking w eek. The sellers has also the right to ship t he Products in a port assigned to the Customer, or to stock them at the expense of the Customer, or, finally, to sell the Products that we re not picked up promptly by the Customer to third parties charging the former for possible payments or greater damage. After 8 (eight) days f rom the issuing of the read y Product notification, the invoice will be issued anyway and the payment terms will transpire. Possible evident flaws or missing Products must be reported at the delivery taking not e on the customer receipt or the warranty will expire.

    PACKAGING AND PROTECTION

    The Products are provided without packaging. Possible packaging must be requested when issuing the order and they will be charged in the invoice. The choice of the packaging type - which has to be made by the Customer, according to the need of Product transport stocking and destination - and all the related responsibilities resulting from that choice are exclusively and totally the customer 's responsibility, with express exclusion of any Seller responsibility. The Customer is notified that using wrong or inadequate methods of shipping, transport, stocking, movement or assembly can cause condensation and oxidation phenomena and it can compromise severely – and sometimes permanently - the Product quality.

    To ensure the panel and the prepainted ribbed sheet aesthetical integrity, it is essential that those surfaces during manufacturing, movement, transport and assembly are protected with a polyethylene sticky film which must be removed by the Customer before assembling the Products, anyway, within 8 (eight) days from t he Product delivery. If the Customer does not remove the film within the terms mentioned above, this can cause extreme film stickiness removal issues, and sometimes-unexpected interactions with the organic layer below, compromising the Product quality and aesthetic. The Customer asking or accepting ribbed painted sheet or panel without that protection supply, accepts the responsibility and relieves the Seller for any kind of damage.

    If the above-mentioned expedient will not be adopted, the possible protest for affirmed sticky film anomalies and/or consequences directly and/or indirectly imputable to the already-mentioned film will not be accepted by the Seller.

    TOLERANCES

    The customer accepts the tolerances noted on the catalogue and/or on the Seller technical sheets (last edition).

    WARRANTIES

    The Seller guarantees to the Customer the Product compliance to the specifications found in the catalogues and/or in the Setter technical sheets (last version), and also the flawlessness of materials and Product manufacturing, within the tolerances and within the technical specification given by the Customer. The warranty stated above lasts 12 (twelve) months after the Product delivery date. Possible protests concerning evident flaws in the Product or shortage must be enrolled (through notified registered mail or early faxed telegram) by the Customer to the Seller within 3 (three) days from the Product delivery. Possible hidden flaws not revealed at the delivery must be reported by the Customer- in the same ways for the evident flaws - within and not after the expiring one year warranty date and, at penalty of forfeiture, within 8 (eight) days from the discovery or from the moment they should have been discovered using ordinary care. The protests must be detailed to allow the Seller a prompt and complete check. The Products subject to protest must be at Customer disposal exactly how they have been delivered, respecting the movimentation, handling and stocking legislation hereby and possible particular instruction provided by the Seller. It is understood that, in any case, the following cases cannot be considered Product flaws: Oil the presence of possible cunning imperfection with less than 1,5 mm protrusion in relation to the metal support plane.

    Oil the presence - when manufactured with overlapping to allow the element lengthwise overlapping - of expanded material residual on the metal surface after the automatic removal of the insulation (the removal from the naked metal must be completed on the working site during the building and it will be charged to the Customer) Condition alto the above provisions fulfillment, in case of prompt flaws complaint by the Customer and Acknowledgement of those flaws by the Seller, the latter will proceed according to the necessary steps and by its own undisputable choice to freely repair and/or substitute the Products Ex Works (EXW), or to refund the Customer a sum co responding to the difference between the ordered Product price and the product price degraded by the flaws (being understood that, In any case, the sum refunded by the Seller to the Customer according to hereby paragraph (ii) can never exceed the flawed product original price). The repaired or substituted product warranty according to the hereby paragraph will expire at the original intended date set by the original Customer purchase. Whereas complaints issued by the Customer concerning flawed Products should reveal themselves false, the Seller will charge the Customer all the costs sustained by the former for reviews, inspections, and possible surveys (also made by third parties).
    The warranty mentioned above is the warranty offered by the Seller to the Customer in relation with the Product sales, it will have validity and it will not be interrupted or extended in any case. No other type of warranty and/or refunding, whether convention al or legal can be requested by the Customer to the Seller. In particular every responsibility of the Seller for direct, in direct, accidental or consequential damages which the Customer may experience from the Product defectiveness and/ or non-conformity (as for delays in the delivery) is excluded. The right of refund of these damages, limited by law, is to be considered renounced by the Customer. The Customer’s right to terminate the contract based on possible Product flaws is excluded. In case of separate deliveries, possible protests, even if promptly made, related to some of the products delivered do not relieve the Seller from the obligation to recall the remaining Products ordered. In dispensation of what is stated above, no warranty is issued by the Seller for metal layer Products without organic covering, except for the warranty of Product correspondence to the regulation in force; the Seller is then relieved from any responsibility related to the possible (and likely] oxidation phenomena occurring on those Products .

    Likewise, no warranty is issued relating to used or secondhand Products, or to Products purchased with the “seen and liked “system, made of available material (whether it is first choice, second choice or junk material) by the Seller’s factory and sold at lowered prices. The warranty described in paragraph 6 automatically expires (and any Product warranty expires as well) in case of:(i) use and/or placement of Products declared flawed by the Customer after the notification expiring date or flaw onset, whichever happens first; (ii) use of Products not according to the related "performance" features; (iii) use, stocking, maintenance, movement or assembly of Products not according to the "movement. (iv) Installation with systems or accessories not according to the Seller technical sheets (last edition) or with accessories (for instance: fixing systems, tampons, ribs fixer, ridges, flashings, etc. which are not provided and/or explicitly approved by the Seller ;(v ) Product s on which intervention of any kind has been made by third parties other than the Seller.

Business Hours

Our support Hotline is
available 8 Hours a day

Monday-Friday: 9am to 5pm
Weekend: Closed

Contact us

Viemetal Group

  • Industrial Area

    BI.PE. Patras
  • Branches

    Italy, Bari
    United Kingdom, London
    North Greece, Thessaloniki
Arkhon Polyurethane Panels Offices