Jabroof Slimfix in a Structural Pitched Roof - Jablite

159Roof insulation – structural pitched roofINSTALLATIONDesignJabroof SlimFix units are simply lifted The following general points should be(a crane is recommended) and positioned noted:in accordance with the Vencel Resil layout ■ Most roof shapes on plan can bedrawing provided. They are secured, in accommodated.accordance with the Vencel Resil fixing ■ Maximum span depends on the roofschedule provided, to the wallplate, ridge pitch, wind loading, element loading,beam and purlin(s) using a combination of element thickness and weight of thehooked and washered nail fixings supplied roof covering and internal finishes.(See figures 29.2 – 29.5 for typical section ■ The design can incorporate gutterdrawings). All joints between units should overhangs up to 700mm according tobe tightly butted and sealed using the the roof pitch.in-situ polyurethane foam spray supplied, ■ Gable ends can overhang to awhich can also be used to seal gaps at the maximum of 150mm withoutridge. Rooflight apertures are cut outadditional support.when the units have been installed. If ■ Trimming at openings is not requirednecessary, a breathable sarking membrane providing they fall within theis installed. Tile battens are nailed to the longitudinal timber ribs of onecounter battens and the roof finish isstructural unit.installed in the normal way.■ Chimney or flue penetrations shouldinclude a collar or other device toprevent the outer temperature of thechimney or flue exceeding 90°C.■ Accepts a tile or slate finish. Concretetiles do not require a breathablemembrane in this application.For advice on other finishes pleasecontact Vencel Resil’s technical servicesdepartment.■ If the units are to be moved manually,they should be kept upside-down, i.e.with the counter battens downward sothat when they are slid upwards overthe wall plate and purlins damage tothe internal face of the chipboard isavoided.■ Design advice is available from VencelResil’s technical services department.Roof InsulationFor technical information 0870 444 8769 technical@jablite.co.uk