Wall Cladding: N1000C

Transcription

1 Wall Cladding: N1000C Firth Steels wall-cladding is manufactured in two different profiles, N1000C and N1000CR. N1000C is the standard profile, and the N1000CR is the same profile with a mini-rib added on for aesthetics and strength. Both profiles can be produced in a colour coated steel (Plastisol, PVF2 and Polyester), and are also available in plain galvanised steel or Aluzinc. Our cladding sheets are suitable for all types of industries, including agricultural, industrial and commercial environments, as well as domestic applications for residential properties. Manufactured from short to substantial lengths, our economic sheeting is incredibly robust and can be used for single skin sheeting, over cladding an existing roof or part of a custom insulation system. Firth Steels carry mainly a 200 micron leather grain effect Plastisol in stock, as this is the standard material for this type of product in the UK and it offers abrasion resistance and good performance at a competitive price. This we carry in stock thicknesses of mm and mm although other thicknesses are available on request. Plastisol coated cladding sheets from Firth Steels are available with a performance guarantee of up to 40 years including cut edges, as long as proper site delivery, installation and continuous maintenance as per guidelines are observed. In total, we offer 31 different colours of 200 micron Plastisol (see page 3). N1000C Profile 1000 cover width Side lap detail pitch cover width pitch 78 1

2 Wall Cladding: N1000C N1000C Section Properties Material Thickness Weight Moment of Inertia Moment of Resistance min max min max mm kg/m² cm 4 /m cm 4 /m knm/m knm/m S280 +Z275* S280 +Z275* N1000C oad/span Performance oad Table Roof Pressure oading Suction oading Span Condition Thick mm Span (Purlin Spacing) mm Span (Purlin Spacing) mm / / Deflection Controls *or equivalent material All our cladding and liner products are quality controlled under our Factory Production Control System, and are certified as confirming to BS EN 14782: " Self Supporting metal sheet for roofing external cladding and internal lining. Product specification and requirements." For a summary of these standards, please see separate downloadable pdf - "Manufactured Tolerances for Profiled Metal Roof and Wall Cladding" from the MRMA. Cladding and liner profiles are supplied in pre-paint coated hot dipped galvanised steel coil specifications as raw material certified as conforming to BS EN 10346:2009 (Yield and Chemical and Mechanical Properties) and BS EN 10143:2006 (Tolerances on Shape and Dimension). All these mill certificates can be supplied with each cladding or liner product delivered. Our unique bespoke project management and production allows our main office to offer full project scheduling and manufacturing/ delivery visibility. This prioritises production according to the varying products and lines we offer allowing full traceability at all stages of manufacture. The SCI has assessed load span tables for Firth Steels products; wall and roof cladding profile N1000 and roof deck profile RD60. oad span tables are in accordance with Eurocode EN and have been produced for a range of material strengths and thicknesses. The scope of the information covered by this certificate for Firth Steels ed is detailed in SCI Assessed Report RT1613 (June 2014). 2

3 Colours Primary Stock Colours PROTEX (200 Micron) eathergrain Plastisol colours that are held in stock, all of which are available for quick delivery. On orders over 2,000 square metres of mm, or 2,500 square metres of mm we can colour match the Plastisol to any of the British Standard colours. Mushroom 10B19 Vandyke Brown 08B29 Moorland Green 12B21 We can also colour match our PVF2 coating to any RA colour for the same order quantities that are quoted above. Goosewing Grey 10A05 Olive Green 12B27 Merlin Grey 18B25 Please contact us on for actual colour samples. These colours may vary slightly to the final product. imited Stock Colours Juniper Green 12B29 Slate Blue 18B29 White 00E55 Ocean Blue 18C39 Pigeon Grey 18B17 Black 00ES3 Special Order Colours These Plastisol colours are also available. Our delivery period is slightly longer. Poppy Red 04E53 Cornflower Blue 18E53 Buttermilk 10C31 Ivory RA9002 Bamboo 08C35 Forest Green RA6002 Jade 14C37 Willow 12B17 inden Green 12E53 Golden Glow 06E56 Saffron 08E53 Golden Yellow 08E51 Tangerine Orange 06ES3 New Red 04D44 Terracotta 04C39 Wedgewood Blue 18C37 New Grey 10B23 Pacific Blue 18E58 Navy RA5003 3

4 Fixing Recommendations These are guidelines for good practice in normal conditions. For special applications or requirements please contact our technical department on Roof Cladding N1000R and N1000RR roof sheets should be fixed with selfdrilling, self-tapping screws fitted with self-sealing washers, from a reputable supplier. Position the fixings in the trough of the sheet (crown fixing is also acceptable). In both cases we recommend fixing in every corrugation at sheet ends and at end laps, and at every other corrugation at the intermediate supports. Side lap stitching may be done with washered stitching screws or bulb-tite rivets. Caps should be fitted to protect the fixing heads. Roof sheets are not recommended on roof pitches of less than 5 degrees. On a pitched roof of 5 to 15 degrees, side and end laps should be continuously sealed with mastic or lap tape, and the side laps stitched at a maximum of 450mm spacing. Over 15 degrees, side and end lap sealing may be omitted unless the building is in a severe weather area. End laps should be avoided, but where they occur, a minimum of 150 mm should overlap and be sealed, both above and below the fixing and as close to the sheet ends as practical. Although in many circumstances a mm thick steel sheet will satisfy the design loading requirements of a roof it is best practice to use mm thick steel to accommodate subsequent foot traffic and point loads without damage or distortion. Side laps should, wherever possible, be laid away from the direction of the prevailing wind. Holes should always be drilled not punched and all swarfe removed immediately.any site cutting or pre-painted steel sheets should be done with a nibbler or cladding saw, angle grinders must not be used. iner Panels The iner Panel is normally supplied in 0.4 mm thick steel and should not be used as a working platform. If a working platform is required we recommend N1000RR sheets be used in mm thick steel with Bright White iner profile on the underside of the sheet when fitted. For ordering / specification this product variation can be classified as N1000RR iner Deck. Wall Cladding N1000C and N1000CR wall cladding sheets are usually supplied in mm thick steel and can be fixed vertically or horizontally. Vertical sheet ends and end laps should be fixed in the trough at every corrugation; at intermediate supports fixing should be at every other corrugation. Horizontal sheets should be fixed in every trough throughout, special care should be taken with the alignment of the end laps and the supporting steelwork must be 'plumb' and in line to avoid visible distortion of the cladding.this effect is known as canning and can occur on vertically fitted sheets if the steelwork is not plumb. In either configuration the minimum end lap should be 100 mm. Side laps should be laid with the overlap away from the prevailing wind and at the cladding contractors' discretion stitched at a maximum of 600mm spacing. Fixing Precautions 1. Protective clothing, particularly gloves should be worn whilst handling and fixing, as laceration of the skin can occur from the sheet edges. 2. Eye protection should be used when cutting in case of flying swarf. 3. Handling sheets and bundles should be in accordance with HSE recommendations 4. Sheets and flashings should be cut and fixed in accordance with our instructions. 5. If subject to abnormally high temperatures ensure adequate ventilation, as fumes may be produced. This would only happen if the products were being misused. e.g. cutting with abrasive wheel or flame cutting or if the product was involved in a fire. 6. Firmly secure all packs of sheets on site. Abide by HSE recommendations for all fixings especially in breezy/ windy conditions. 4

5 4 Hour Fire Resistant Wall The Firth Steels 4 Hour Fire Resistant Wall is approved for areas specifying a requirement to resist spread of flames from inside to outside, on non-load bearing walls more than one metre from a boundary where 15 minutes of insulation is required. Any advice on protection of steel work should be sought from a specialist company. Below are the fixing recommendations for obtaining a 4 Hour Fire Resistant Wall. All materials can be purchased and delivered direct from Firth Steels. 1. Firth Steels Outer Sheet 2. Crown Glass Fibre Insulation 3. Firth Steels liner panel 4. Metal Spacer Ferrule/Spacer 5. Eaves Beam 6. Steel Rivets at 0mm to sheet and liner 7. Cladding Rail 8. Intermediate Steel Ferrules Spacer Bars The spacer bars are to be 50mm x 60mm deep x 50mm. 1.6mm where 80mm insulation used. The depth is increased to 80mm where 100mm quilt is used. Spacer Ferrules Firth Steels MSP25 metal ferrules to be used throughout. Certification Assessed by Warrington Fire Research Consultants in accordance with BS476: Part 22: Certification Reference Warres Number dated 11th January Performance 4 hour stability and integrity. 15 minutes insulation. Outer Sheet N1000 Rib or Crest Faced, mm or mm in substrate thickness. Insulation 80mm or 60mm Pilkingtons Crown Glass Fibre Quilt to a density of 1kg/m 3. Vertical and horizontal joints must be overlapped by a minimum of 100mm. Horizontal joints to be made and the spacer bar position. iner Sheet Firth Steels liner 0.4mm thickness. Fixings All fixings should be steel, including the stitching rivets used at 0mm centres to both inner and outer sheets. Since the original Firewall testing was done, we have had several assessments carried out by Warrington Fire Research Establishment and can provide copies of these if required.assessments carried out are as follows: Additional insulation materials, namely Rockwool cladding roll of 23kg/m3 nominal density.owen Cornings Crown Wool glass fibre of 1 or 23kg/m3 or Owen Corning Rocksil of 90kg/m3 nominal density. In addition to this we also have assessments for Part 2 using insulation of up to 120mm thick. Also we have assessments for fixing the cladding under the sheeting rails and also fitting the cladding horizontally instead of vertically. 5

6 Maintenance The roofs and facades of buildings are exposed to many kinds of impurities and pollution in the air. These include sulphur, chlorine and nitrogen compounds causing acid rain, and various mineral salts, dirt and soot. These impurities together with water and UV radiation of the sun affect the coating. The effects are worst on those areas of the building where impurities are not washed away by rainwater. From the point of view of the durability of coated steel sheet the most critical things are knocks and scratches, in which the impurities come into direct contact with the zinc layer under the paint coating or, especially, with the steel core. The effect of the impurities in the air is greatest close to polluted industrial and in coastal areas. Emissions containing sulphur or chlorine are especially difficult. Impurities put a strain on the coatings and reduce their useful life, so the regular cleaning of wall and roof surfaces is an important part of the care and maintenance of the coatings. Annual Inspection Parts of a building where colour coated sheets have been used should be inspected regularly. If any defects are found in the coating they should be repaired immediately, in order to ensure long life. The annual inspection should include the following procedures: Initial inspection Remove all loose objects such as loose fittings, pieces of sheet, drillings swarf and other metal articles from roofs and rainwater systems immediately after the installation. Visual inspection Visual inspection of the coated surfaces should be carried out once a year as a general inspection. A more thorough inspection should be carried out every five years during the warranty period. The coated surfaces should then be inspected at a viewing distance of 1,5 metres. After the warranty period has expired, the surface should be inspected every two years at a viewing distance of 1,5 metres. Rainwater Systems Rainwater systems should be cleaned every year. Blocked, partly blocked and dirty rainwater systems cause icing and corrosion problems. Cleanliness of the roof Check the roof for cleanliness. Dirt and soil cause a corrosion risk by keeping the surface of the sheet wet. A dirty roof also spoils the appearance. Condition of the fittings Check the condition and attachment of the fittings. Damaged or partly loose fittings cause leakage, decay, and a risk of corrosion. If a fixing is damaged, it and/or the roof batten should be replaced with a stronger one. Condition of the coating Check the condition of the colour coating. Remember to inspect the roof valleys and rainwater system edges. Peeling of coating, uneven fading, blistering and cracking as well as local scratching are all signs of the need to repair the coating. Follow the painting instructions given in this document when repairing the coating. Washing and removal of dirt Rainwater is usually sufficient to keep colour coatings clean. Impurities, such as leaves from trees, however, should be cleaned off the roof, roof valleys and rainwater systems once a year. Coating should be cleaned with a soft brush and water or high-pressure water (< 100 bar). More stubborn dirt can be removed using a cleaning agent suitable for paint coatings (see table 4). Difficult dirt spots can be removed with a cloth moistened in white spirit. The rinsing should be carried out from the top of the roof downwards after the cleaning agent has taken effect for a few minutes. The rainwater gutters should then finally be rinsed down with water. It should be noted that the use of unsuitable or excessively strong cleaning agents will damage the colour coating. Touch-up painting and maintaining eves edges It is always worthwhile to repair any damage which occurs to the coating as soon as possible. Only paints suitable for repair painting of coatings should be used. Spray-paints must not be used. Repair painting of damaged eaves Scrape off any peeling or flaking coating. Remove any rust by sanding or with a steel brush. Paint the metal surfaces with a paint brush. Remove any possible blockage and dirt and flush, and, if necessary, wash the whole system. Repair any damage. 6

7 Maintenance CONTINUED Recommended coating Clean the damaged area using white spirit or cleaning agent as necessary. Paint the damaged area, 1 2 coats. Sheets should be touched up using the correct plastisol, PVDF paint or whatever the original coating was. The area should be touch-up painted using as small a brush as possible. If the damage reaches down to the primer coat only, one coat of paint is sufficient. If, however, the damage reaches down to the zinc, it is recommended that a second coat of paint be applied after the first coat is dry. Edge corrosion, in which the cut eaves edge of the sheet begins to rust, can sometimes occur, particularly on low-pitch roofs. Painting the eaves edges after the new roof covering has been installed can prevent this. This is highly recommended especially in seaside conditions by transparent Marketing Paint lacquer. Repainting of coating surfaces Before any decision is made to completely repaint whole surfaces it must be checked that there are no local damages and the adhesion of the coating to the base is good. If significant localised damage is found, or the coating has faded unevenly, it is best to consult an expert to establish and plan a repainting scheme. It is difficult to give an exact time for when maintenance painting should be carried out, as the useful life of colour coatings is dependent on many factors. These are colour and type of coating, local climate conditions, slope of the roof, building method, and installation method. The strain on coating is at its greatest on the south-facing slope of a roof, when the colour of the coating is dark. The most general reasons for repainting are significant changes in the colour or gloss of the surface. Impurities in the air and the sun s UV and heat radiation have the greatest effect on coatings. Durability of different coatings varies. 7