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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

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 Index® Perfobase Sheet 493 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. 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


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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