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        Installation & Maintenance-(3)

        Fecha:Jul 11,2011


        Mineral fibre tiles are marked on the back for ease of identification and maintenance.
        Maintenance on suspended ceilings should only take place after the effect of the work on the technical characteristics of the installation has been fully considered.
        Ceiling tiles should require no more maintenance than a painted plasterboard ceiling, however, when maintenance is necessary, certain procedures should be followed to ensure that the performance and appearance of the ceiling is maintained.
        Minor damage to mineral fibre tiles can be repaired using commercially available fillers and Armstrong touch-up paint,although due to natural aging of the installation an exact colour match may
        not be possible.
        Similarly when replacing tiles, new material is likely to introduce colour variation. This effect can be substantially reduced by redecoration of the entire ceiling, or by replacing all tiles in
        a particular area and using the re-usable existing tiles for refurbishment elsewhere.
        Most ceiling tiles and grids can be redecorated, however, consideration should be given to the appropriate type of paint to be used and to the effect on the reaction to fire and acoustic
        performance. Redecoration by spraying is the preferred method, using the minimum amount of paint applied in an even manner. Ceiling tiles should be removed from the grid and laid on a flat
        surface prior to painting, whilst grid can be repainted in situ, but with the tiles removed. Tiles should only be moved or replaced once dry and the grid must dry before replacing the ceiling tiles.
        If a professional firm of decorators is used, assurances should be sought that the necessary performances will be maintained. It should be noted that any repainting would invalidate Armstrong’s
        warranty for the product.Different ceiling tile materials have different requirements for cleaning.
        Mineral fibre ceiling tiles should first have any surface dust removed using a soft brush. Pencil marks, smudges etc. may be removed with an ordinary gum eraser.Alternatively, a moist cloth or sponge
        dampened in water containing a mild soap or diluted detergent can be used.The sponge should contain as little water as possible and the ceiling must not be made wet. The process should be repeated again in a similar manner with a damp sponge but with clean water only to remove any residual soap or
        detergent. No abrasive cleaners should be used.
        The Bioguard paint finishes on Armstrong Bioguard, Bioguard Acoustic and Orcal Bioguard products have been tested for resistance to disinfectants with different active ingredients:
        - Hexanios (active agent - Quaternary
        - Minncare (active agent - Hydrogen
        - Klercide CR B (active agent - Chlorine)
        Ceramaguard and Newtone tiles are unaffected by moisture and may be cleaned with increased amounts of
        water. As Ceramaguard can absorb moisture without detriment to the stability of the tile consideration should be given to the additional weight of the ceiling and the required centres
        of main runners.
        Soft fibre ceiling tiles can normally be easily cleaned if their surface becomes soiled, however, the frequency of cleaning should be carefully considered as once any dirt becomes ingrained, or the surface stained, cleaning is less likely to be successful. The choice of cleaning method depends upon the product type and degree of soiling.
        Any surface dust should be removed from the face of the tile using a soft brush or a vacuum cleaner with a clean brush attachment. Pencil marks,smudges etc. may be removed using a ‘Scotch Bright’ abrasive faced foam pad, lightly rubbed across the soiled area. Excessive force should not be used otherwise glossy patches may occur. An alternative method of cleaning is with a moist cloth or a sponge dampened in water containing mild soap or diluted detergent, but abrasive cleaners must not be used. The sponge should contain as little water as possible and the tile then wiped with a cloth
        dampened in clean water to remove any soapy residue.
        Parafon Hygien can be high pressure washed, however, the following precautions must be observed
        to avoid damage to the tiles and it is recommended that a small trial area should be initially attempted. The tiles must be clipped down with the appropriate Armstrong clip using a minimum of 2 clips per 600 edge and 3 clips per 1200 mm edge. First apply a coating of cleaning foam, and then
        ensure it is thoroughly flushed off with clean water. The water pressure must not exceed 80 bars and the flow limited to 6-8 litres per minute. The maximum water temperature should be 40ºC.The nozzle must not be closer than 300 mm from the tile and the water should be applied in a fan spray (not
        the jet or cutting mode). The angle of application should be 45º. In hygienic areas, only permitted cleaning agents should be used and the pH-value of the water/detergent mixture should be between 7 and 12. Although water penetrates into the product and around its edges, after 1-2 days the water
        should evaporate. The temperature and ventilation of the ceiling void are important factors in minimising this time.This cleaning process should be limited to no more than twice per year.
        Metal ceiling tiles should be cleaned as soon as they become soiled to prevent the dirt becoming ingrained or the surface stained, otherwise the cleaning is less likely to be successful.Surface dust can be removed by wiping with a lightly moist clean soft cloth. For grease and fingerprints use a moist cloth or sponge dampened, with as little water as possible, containing a mild soap or detergent. After cleaning, the soapy film should be wiped off with a cloth or sponge lightly dampened with clean water. Orcal Clip-In Plain tiles can be high pressure washed when the product is installed with a high resistance silicone seal between the joints. The water pressure must not exceed 80 bars and the flow limited to 6-8 litres per minute. The maximum water temperature should be 40ºC. The nozzle must not be closer than 300mm from the tile and the water should be applied in a fan spray (not the jet or cutting mode). The angle of application should be 45º.
        Orcal Bioguard tiles should be cleaned in the same way as standard Orcal tiles.Specialist contractors may offer cleaning services using chemical solutions. Where these methods are considered, it is
        recommended that a trial is first carried out in a non-critical area of the building so that the result and overall effect can be assessed.


        Armstrong ceiling products are CE marked with the essential safety performance criteria as required by EN 13964:2004 (Suspended ceilings - Requirements and test methods) in order to comply with the Construction Products Directive (89/106/EEC).For ceiling tiles (membrane components) these include reaction to fire, release of asbestos and release of formaldehyde.For grid (substructure components) they are reaction to fire, load bearing capacity and durability.
        Products should be installed in accordance with Armstrong’s manufacturer’s recommendations,the relevant British and/or European Standards and The Control of Substances Hazardous to Health
        (COSHH) Regulations 2002. When ceilings are installed in accordance with these instructions, no excessive dust or hazards should be created. However,if excessive dust is created, approved
        respiratory protection complying with EN 449 FFP1 or FFP2 should be worn.Such protection is deemed to be required if the total weight of inhalable dust exceeds 5mg/m3, or 2 fibres/ml,when averaged over an 8 hour TWA reference period.
        Reference may also be made to the following:
        Health & Safety at Work Act 1974 Manual Handling Operations Regulations 1992 (as amended)
        Personal Protective Equipment at Work Regulations 1992 (as amended)
        HSE Guidance Note EH 40/2005
        – Workplace Exposure Levels HSE Guidance Note EH 46/1990 –Man-Made Mineral Fibres.

        Categoría: information

        Palabra clave de la información:mineral fiber ceiling maintenance