Jabroof Slimfix in a Structural Pitched Roof - Jablite

156APPLICATION:Roof insulation – structural pitched roofProduct: Jabroof SlimFixTraditional UK roofs are designed and constructed with the insulation at ceilinglevel, leaving a cold roof and under-used loft space. The Jabroof SlimFix insulatedstructural pitched-roof system provides a new method of constructing a tiled orslated pitched roof which offers structural support and, at the same time, satisfiesthe relevant U-value requirements. By spanning from eaves to ridge with aminimum number of purlin supports, the Jabroof SlimFix system also provides auseful insulated space in the roof void.Jabroof SlimFixJabroof SlimFix consists of a sandwichconstruction incorporating a low lambdaexpanded polystyrene (EPS) core andmoisture-resistant chipboard facings toprovide a warm-roof construction. Coldbridging at the structural members iseliminated, substantially reducing the riskof condensation.ConstructionLongitudinal ribs and gutter laths ofEuropean Fir are fitted to the edges of theJabroof SlimFix. Where ridge chamfering ofthe top end of the unit, to match the ridgeboard angle, is carried out in the factory,the top lath will be omitted. The upperlayer of chipboard has a factory-bonded,orange-coloured, moisture resistantchipboard facing, over which are fittedthree vertical counter battens. The lowerchipboard facing has a white finish.Longer spansFor new buildings, a minimum number ofpurlins can be used with the structuralJabroof SlimFix units enabling longer spansto be achieved. (See Jabroof SlimFix spantables 29.3 – 29.8)VentilationCreating a warm-roof construction, whichincludes a breathable sarking membrane,removes the need for ventilation of theroof void.Rooflight openingsSubject to dimensions and position,openings for rooflights or roof windows donot require trimming.Protection to servicesBecause the insulation is at rafter level,the roof space remains warm, providingthermal protection to water services inthe loft.Speed of constructionJabroof SlimFix is available in a choice oflengths providing fast, economicalinstallation. Counter battens and gutterlaths are already fitted. The insulatedstructural pitched roof system has been inuse in Europe for over thirty years.ApprovalsJabroof SlimFix has been assessed andapproved by the British Board of Agrément,certificate number 00/3696. The units aremanufactured in the Netherlands byVencel Resil’s sister company IsoBouwSystems bv.DimensionsLength: 3630 – 7520mmWidth: 1020mmTypeThe insulation core of Jabroof SlimFix issupplied as low lambda EPS and classifiedas Class E, flame-retardant additivematerial, as defined in BS EN 13163.ShapeJabroof SlimFix is square-edged; ridgechamferedunits have a splayed edge atone end only.AccessoriesThe following accessories are available:■ White plastic internal finishing trimsfor the edges if required.■ In-situ polyurethane foam for sealingjoints and gaps.■ Aluminium-butyl rubber tape forsealing horizontal butt joints.■ Hooked nails to suit product.■ Threaded or profiled nails with hooks orwashers to suit product.■ Lifting hoist.FireThe insulation core is manufactured fromClass E, flame-retardant additive material.Where Jabroof SlimFix panels are exposed,12.5mm plasterboard will be required tobe fixed over them once they have beeninstalled, in order to achieve a Class 1Surface Spread of Flame rating. Theexternal fire exposure rating will dependon the selected roof finish.Water-Vapour TransmissionJabroof SlimFix can be consideredto provide a vapour control ifinstalled correctly.