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External Wall Cladding (EWC)

  • Product Introduction
    Merino External Wall Cladding (EWC) is a Solid Exterior grade Compact High Pressure Laminate as per EN 438-6 Type EDS and EGS manufactured using specially treated Acrylic Resin under high pressure and temperature & hardened with Electron Beam Curing Thus providing Weather Resistance and UV Resistance.



    Application:

    Residence (kothi)
    Shopping Mall
    Hotels
    Residence (High Rise Apartment)
    Industry
    Office Buildings
    Retail shops
    Airport terminal





    Why Chose Merino External Wall Cladding
    Long Lasting
    : Because of added Electron Beam Curing in EWC+ , it has higher resistance to polluting chemicals in air and higher abrasion resistance hence it leads to better  performance in adverse weather conditions thereby giving 20 % extra life.

    Easy to
    Install: Less time and effort is required for Installation.
    Maintain: Can be cleaned using a damp cloth or sponge and a mild soap or detergent.
    Replace: Reproduction of Same color of Merino External Wall Cladding is Possible; so replacement with matching colour is possible.For Renovation, can be installed on existing wall surface.

    Highly Decorative
    Multitude of designs -wood grains/patterns
    Different sizes of panel are available enabling project optimization.
    Different shapes can be offered. (Even amoebic shapes are possible)
    Designed for vertical and horizontal panel configurations
    Clear, Sharp edges gives neat & clean look to Interior
    Big format panels can reduce no. of lines associated with edges giving neat look to Interior
    Matching colour rivets are easily available in the market

    Properties
    Weather Resistance: Merino External Wall Cladding (EWC) is highly weather resistance as there is no effect on the surface or the core of the Merino External Wall Cladding material when exposed to extreme weather conditions such as high temperature to low temperature and high humidity to low humidity.
    UV Resistance: A special UV protected treatment makes Merino External wall Cladding (EWC) UV Resistant, which does not allow the decorative surface to discolour when exposed to direct sun light for extended periods.
    Climatic Shock Resistance: Merino External Wall Cladding (EWC) is resistant to sudden change in the Temperature and Humidity of theatmosphere, and maintains its physical and mechanical properties for long period.
    Corrosion Free: Merino External Wall Cladding (EWC) is absolutely Corrosion Free unlike other external cladding products.
    Graffiti Resistance: Merino External Wall Cladding (EWC) is Graffiti Resistance, any writing marks made on the surface can be easily removed with diluted solvents such as Acetone. Water Raz, Thinner.
    Moisture Resistance: Merino External Wall Cladding (EWC) is highly moisture resistant hence ideal for use in all types of exterior cladding on buildings such as Residential, Workplaces, Business Centers, Banks, Public Buildings, Airports and Hospitals.
    Mechanical Properties: Mechanical properties of Merino External Wall Cladding (EWC) like impact Resistance, Flexural Strength, Modulus of Elasticity is very good because of the use of special modified phenolic resin.
    Termite Resistance: Merino External Wall Cladding (EWC) is completely resistant to termite and fungal attack.
    Abrasion Resistance: Merino External Wall Cladding (EWC) has superior Abrasion and Wear Resistance, hence life of Merino External Wall Cladding (EWC) is far more than most of the other Wall cladding materials.

    EWC+ and EWC are also available in Fire Resistance grade.

  • Storage and Handling:
    Merino EWC External Wall Cladding Panels is heavy material. During transport, use pallets to support the complete sheet area. Pallets should be strong and stable enough to support their load without bending or buckling.

    The surface of each board must be free from debris, grit or foreign bodies which can damage the decorative surface. When loading and unloading, do not push or drag Panels over one another; lift cleanly by hand or suction device. Make stacked Panels secure against slipping.

    Also, Merino EWC External Wall Cladding Panels undergo a certain amount of dimensional movement when subjected to humidity, hence to minimise the risk of bowing, take care of the following

    Always cut the panels with the long edge parallel to the length of the panel. Dimensional Movement across the width of the panel is twice as great as it is along the length, so cutting panels with the long dimension running across the width of the panel greatly increase the risk of bowing.

    As far as possible, the ambient conditions should be the same on each side of the panel, as it is important that both sides gain or lose moisture at roughly the same rate. Where panels are mounted on a wall, provide adequate ventilation to ensure that temperature and humidity conditions at the back of the panels are essentially the same as those in the front.

    Make fixing centres sufficiently close to prevent movement:
    Store Merino EWC External Wall Cladding Panels enclosed in warehouse where normal interior conditions (18°C – 25°C and 50% - 60% relative humidity) are maintained. Merino EWC External Wall Cladding Panels will remain flat if stored horizontally in packs on a flat base board. The base board must be dry, and should ideally be covered with a material impervious to water, to act as a moisture barrier. Cover the top sheet of each stack with a moisture barrier/cover board, with sufficient weight to remain flat in contact with the whole surface area of the Merino EWC External Wall Cladding Panels. Maintain procedure throughout the storage (whether in a warehouse or on the fabrication shop floor) and reinstate it whenever a sheet is removed from the stack. Failing to store Merino External Wall Cladding Panels flat for any length of time causes deformation which is almost impossible to rectify, particularly with thicker boards. If protective films are provided these should be removed from both sides of the board simultaneously.

    Profile cutting and Edge Finishing:
    It is not necessary to apply edging strips or edge sealants to Merino EWC External Wall Cladding Panels. For many applications clean sawn edges are sufficient.

    To achieve a superior finish or a profiled edge, use a spindle moulder or router. For this type of work PCD tooling is recommended. It is not possible completely to avoid cutter marks, but they can be minimised by feeding the work at a constant controlled speed with a mechanical power feed. Take care to avoid pausing during cutting and profiling, which may result in burn marks that are difficult to remove. To obtain clean edges free of cutters marks, carry out a further sanding and scraping operation. Buffing with steel wool and applying silicone free oil enhance edges. Chamfering or profiling the edges of Merino External Wall Cladding panels reduce the risk of edge impact damage.

    Drilling:
    The most suitable drills for use on Merino EWC External Wall Cladding Panels are those designed for plastic sheets. These drills have a point angle of 60° - 80° instead of the normal 120° for drilling metal.

    To avoid break-out on the reverse side, gradually reduce the feed speed of the drilling head and the pressure applied when approaching the point of breakthrough. Working on a firm underlay, reduces the risk of break-out.

    For blind boring into the face, the depth of the hole should be such that at least 1.5 mm of material remains between the bottom of the hole and the other side of the sheet. TCT lip and spur drills produce clean flat-bottomed blind holes, with low risk of point penetration on the reverse side. This allows maximum depth of material to be used for fixings. When drilling parallel to the surface (edge drilling) at least 3 mm of material must on either side of the hole. Threaded holes can be produced using engineer's screw cutting taps. Self – tapping screws or threaded brass inserts may also be used.

    Sawing:
    Saw blades used for cutting double-sided composites are generally suitable for cutting Merino External Wall Cladding panels. Saws of less than 2 mm thickness are not recommended.

    Break-out on the underside of Merino EWC External Wall Cladding panels can be reduced by various methods:

    Using a pre-scoring blade on the underside
    Using a base-board of plywood or hardboard beneath the sheet
    Altering the exit angle of the saw blade by adjusting the height setting
    When sawing a Merino EWC External Wall Cladding panels with two decorative faces, the feed speed essentially governs the quality of the saw cut. A speed of 0.03 mm -0.05 mm per saw tooth has been found to be the most successful.
    Maintenance: As HPL do not suffer from corrosion and oxidation, no further surface protection and no maintenance apart from cleaning is required. Merino EWC External Wall Cladding may be cleaned with damp cloth or ordinary soap.

  • Physical Characteristics
    PropertiesTest MethodAttributes/
    Property
    Unit Standard
    value
    Actual
    value
    Thickness EN 438 2–5 6.0 < e < 8.0 mmTol 0.4Tol ± 0.4
    Length & WidthEN 438 2-6 Panel mm+10–0+10–0
    Edge StraightnessEN 438 2–7 Panel mm< 1.5< 1.5
    SquarenessEN 438 2– 8Panelmm/m< 1.5< 1.5
    FlatnessEN 438 2–96.0 < e < 8.0mm< 5.0< 5.0
    DensityISO 1183Massg/cm3< 1.35> 1.4
    Wear ResistanceEN 438-2 10Abrasion ResistanceRevolution350 >400 Rev.
    Impact ResistanceEN 438 2 21Dropped ballmm1800 mm1800 m
    (Large Diameter Ball) e < 6 mm height–no
    crack
    height–no
    crack
        10 mm Max.10 mm Max.
    Dry Heat ResistanceEN 438-2 16Resistance to DryAppearanceMin. Level 4Level 5
      Heat at 180°c   
    Resistance toEN 438-2 12T % Mass
    Increase
    Max. 2% in weight< W = 0.8%
    Boiling WaterT < 5.0 mmMoisture Resistance% Thickness IncreaseMax. 2% in thickness< T = 0.8%
       Min Level AppearanceLevel 4Level 5
    Mechanical Properties     
    Modules of ElasticityISO 178StrengthMpa< 9000< 9000
    Flexural StrengthISO 178StrengthMpa> 80< 90
    Tensile StrengthEN ISO 527 – 2StrengthMpa< 60< 70
    Weather Resistance
    PropertiesTest MethodAttributes/
    Property
    UnitEWCEWC+
     Standard
    Value
    Actual Merino
    EWC Value
    Standard
    Value
    Actual Merino
    EWC+
    Value
    Light Fastness EN 438-2 27Contrast Grey ScaleMin. Level 4> Level 4Min. Level 4 >Level 4
    Artificial WeatheringEN 438 - 2 29 ContrastGrey ScaleMin Level 3> Level 3Min Level 3> Level 3
     : 3000 hAppearanceGrey scaleMin. Level 4> Level 4Min. Level 4> Level 4
    UV – LightEN 438 - 2 28ContrastGrey scaleNo requirementNo requirementMin Level 3> Level 3
    Resistance: 1500 hAppearanceGrey scaleNo requirementNo requirementMin. Level 4 > Level 4
    DimensionalEN 438 2 – 17Accumulated%L: Max 0.3 %< 0,3 % (L)L: Max 0.3 % < 0,3 %
    (L)
    Stability at Elevated dimensional W : Max 0.6 %< 0,6 % (W)W : Max 0.6 % < 0,6 %
    (W)
    temperature Change      
    Resistance toEN 438 2 – 19AppearanceRatingMin. Level 4Min. Level 5Min. Level 4 Min.
    Level 5
    Climate Shock Flexural StrengthIndexMin. 0.950.98Min. 0.95 0.98
      Index Ds FlexuralIndexMin. 0.950.97Min. 0.95 0.97
      Modulus Index Dm      
    Fire Characteristics       
    Reaction to FireEN 13501 – 1Fire RetardantClassification  B S2 d0 
  • Limited Warranty: Merino guarantees that Merino EWC* and EWC+** panels will continue to posses the properties as per requirement of EN 438-part-6 for a period indicated below from the date of delivery of the product to the buyer. ØEWC – 10 Years ØEWC+ - 12 Years
    Slight homogeneous variation in colour may take place in course of time
    Guaranty will be valid when installation will be done according to Merino Installation Guide line only.
    This will exclude if any damage been done by mishandling as a result of improper maintenance of the product


    *Merino EWC is suitable for normal usage.

    ** Merino EWC+ is suitable for severe heavy exposure to sunlight and weathering conditions.
Smoked Rovere Oak
Peconic Chestnut
Golden Marble
Brazilian Walnut
Mahagony
Mystique Walnut
Walnut Bronze
Malagasi Wenge
Nice Wood
Red Oxford Cherry
Soft Travertine
Piazza
Igneous Micas
Elevated Wood
Columbian Walnut
Cherry Walnut
Rustic Dreams
Crumple Cement
Sapelle
Alhamara Wood
Golden Campino
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