Fitting additional insulation slabs to loft joists - Paroc.com

paroc.com

Fitting additional insulation slabs to loft joists - Paroc.com

Fitting additionalinsulation slabs to loft joistsInstallation instructions of Paroc stone woolThe best and most effective place to start savingenergy is the loft. Improving the thermal insulation byadding insulation slabs to the loft is a cost-effectivesolution.In addition, there is usually plenty of available spacefor additional insulation in the loft, and the fitting iseasy.Remember• Check that the roof is sound.• Remove old damp or mouldy insulation.• Make sure that the loft joist system is airtight – seal all leadthroughs.• Adding an extra insulation layer reduces the temperature in theloft. Therefore, ventilate the loft space well to eliminate mouldproblems by installing wind diverters or gable end vents.• The wind diverters channel ventilation air along the roof throughan air gap, which prevents air flows from penetrating theinsulation and impairing its heat insulation properties.• Remember to insulate also the expansion tank, ventilation ductsas well as the entry hatch.Step 1Clear all debris from the loft and remove all damaged insulation. Level the remaining insulation before fitting new. Insulate also theexpansion tank if located in the loft.Paroc Building InsulationFebruary 2007


Step 2Step 3Install wind diverter boards to the base of the roof so that thetop of the board is at least at 150 mm’s height from the newinsulation. Make sure that the air gap created between the newinsulation and the roof is at least 20 mm.Erect bridges and a frame around the entry hatch at least at 50mm’s height from the top edge the planned insulation layer.Step 4Start fitting insulation from the corners of the gable and worktowards the centre of the joist structure. Lay the first layer up tothe top edge of the existing joist. Lay subsequent layers usingstaggered joints.PAROC OY AB Building Insulation, P.O.Box 294, FI-01301 Vantaa, Finland, Telephone +358 204 55 4868,Telefax +358 204 55 4738, www.paroc.com???????????The information in this brochure represents the sole and comprehensive description of the condition of the product and its technical properties. However, thecontent of this brochure does not mean granting a commercial guarantee. In so far as the product is used in an area of use which is not provided for in thisbrochure, we cannot warrant its suitability for said area of use unless the suitability was expressly confirmed by us upon request. This brochure replaces allprevious brochures. As a result of constant further development of our products we reserve the right to make alterations to brochures.

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