IsoBoard Under Soffit Ceilings |
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Where construction, design and / or cost implications prohibit the installation of an inverted roof insulation system, the requirement for insulation is met by fixing IsoBoard to the under soffit surface of the slab as a ceiling.
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Typical uses for IsoBoard in this application:
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Used in Residential and Commercial applications to provide insulation where an inverted roof insulation system may not be appropriate.
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Suggested Bill of Quantity Specification:
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"ISOBoardÆ high density 34-36kg/m3 rigid extruded polystyrene 100% closed cell insulation board of .... mm thickness and 600mm width, fixed using washers and plastic plugs at 300mm centres through pre-drilled holes to underside of smooth concrete soffit (fixed to levelling brandering if required)."
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Site Handling Instructions
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Store boards flat within original packaging until required.
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Boards are to be protected from adverse weather conditions and direct sunlight for the storage period.
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Handle and install with care to prevent damage to board edges and exposed surfaces.
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Wipe boards with cloth and softened water solution to clean as necessary.
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Please contact IsoBoard for any queries with respect to the above.
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Application Guide
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The recommended under soffit insulation installation method for IsoBoard
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Drill fixing holes at 300mm centre spacings into soffit. Fix IsoBoard using plastic washers and plugs (Hilti or equivalent).
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In the case where the board is placed as the top of a service duct, IsoBoard is installed in panels not exceeding 1,5 square metres in area, with a minimum 25mm spacing between adjacent panels (see fire report).
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Where applicable, suspended ceiling fixings can be effected through the IsoBoard.
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Provide a level surface to attach the board to, such as brandering, if an aesthetically acceptable finish is required.
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The full text of the Below Soffit In Service Duct Fire Test as conducted by the CSIR Building Technology unit with respect to this installation method, report no. BF 502/089-5600-5664, is available on the IsoBoard website.
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Ordering IsoBoard for the under soffit application.
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Use boards between 1.2m and 3m long profiled all round to allow for alignment and tolerances experienced in the product.
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IsoBoard is readily cut to length on site using a sharp blade or hack-saw, or can be supplied cut-to-length by the Regional Distribution Centres.
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Where IsoBoard is to be installed under soffit above a service duct, the boards should be ordered in maximum 1200mm lengths, with two installed adjacent to one another to form the required panel size.
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Printable and Downloadble Pages on Soffit Ceilings |
Agrement Certificates |
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To download the Agrement Certificates click on above link
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To download PDF format, right-click on the links below,
and choose "Save Target As". |
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