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Technical Dayta Sheet Compedium

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING JOINT FILLERS WATERPROOFING WATERSTOPS ROOFING TIMBER FLOORING ALPHABETICAL INDEX Technical Data Sheet 493 Index® Perfobase Perforated reinforced base sheet, to relieve water vapour pressure, from under multi-layer torch-on membrane systems Uses Perfobase is used for spot bonding membranes with a torch. It should be used as a first connecting layer to avoid the formation of blisters in waterproofing membrane applied on concrete which will remain visible to the eye. Perfobase acts as a vapour diffusion layer if it is used as a connecting layer between a vapour barrier to be applied on a cement substrate of environments with a high level of relative humidity. The same goes for restoration when it is used to connect a new layer which will remain visible, with an old bituminous surface which has captured humidity. The choice of using a spot bonded connecting layer should be subject to the careful evaluation, by the planner of the roof and of the wind force present where the membranes will be applied. Advantages „ Index membranes have over 25 years of proven performance throughout Australia „ Specifically selected for Australian conditions „ Cost effective „ Quick to install „ Low VOC - 21 grams per Litre „ Allows the homogeneous distribution of spot- bonded adhesion zone „ The above layer is more resistant to the wind and is more stable to temperature variations Description Perfobase is a perforated, reinforced fibreglass mat, impregnated with special polymer modified bitumen which is compatible with both APP and SBS bitumen membranes. A flamina film which melts when torched protects both sides of the membrane. The 4cm diameter perforations are distributed evenly over the surface of the membrane, with 119 holes/m². Perfobase guarantees the uniform distribution of the bonding areas while using a torch, with no particular expertise of the operator required. Maintenance No special requirements, any damage identified during normal inspections should be repaired or replaced as appropriate. June 2014 Page 1 Elastoplastomeric polymer bitumen Fibreglass mat Elastoplastomeric polymer bitumen Flamina Flamina Properties Product code: 742020 Reinforcement: Perforated fibreglass mat Weight: Approx 800g/m² No of holes per /m²: 119 Diameter of the hole: 40 mm Degree of perforation: Approx 15% Specification Clauses Where so designated on the drawings, surfaces shall be covered with a torch applied, fibreglass reinforced bituminous vapour barrier and waterproof membrane. June 2014


Technical Dayta Sheet Compedium
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