Hydrotech Brochure - Barbour Product Search

Installation ProcedureSubstrate RequirementsLightweight Structural ConcreteWhen installing a lightweight structuralconcrete slab, upon which it is intendedto install Hydrotech, it is most importantto ensure that the contractor provides asuitable, wood float finish free of laitanceand free of all but minor surface defects.ScreedsWhen installing a screed system toprovide falls to a flat structural slab,upon which it is intended to installHydrotech, it is critical for the contractorto ensure that the screed mix is of thecorrect density and not overly wettedduring the course of installation.When preparing a layout for a screedscheme it is imperative that the falls arefully mitred to all outlets and that thereare no steps in the screed surface. Alloutlets must be set flush with the topsurface of the screed.Hydrotech waterproofing must not bedressed down a vertical screed surfaceand onto the horizontal concrete slab.General PreparationSubstrate SurfacesTo ensure the successful performanceof the Hydrotech system, it is veryimportant to prepare the substratecorrectly.1. Surfaces are cleaned of allcontaminants such as un-approvedcuring compounds, form releaseagents, oils, dirt, etc.2. Alumasc Bitumen Primer is sprayapplied to the cleaned surface andleft to thoroughly dry.Hydrotech MembraneBefore Hydrotech Monolithic Membrane6125 can be applied, whether for formingdetailed work or applying to the mainhorizontal roof areas, the material mustfirst be melted. It is then further heatedto the required temperature and mixedto develop its full physical properties.The rubber content of the membranemakes it necessary to use indirect heat asobtained with an oil or air type doublejacketedmelter.The Correct Sequence ofWork StagesOf equal importance are the correctsequence of work stages during theinstallation of Hydrotech MonolithicMembrane 6125 and other componentsof the Hydrotech system to ensure awatertight finish.■ Detail Work (Stage 1)Upstand details are completed first,before the waterproof membrane isapplied to the main horizontal roofarea. The steps taken to formupstands are shown on page 17 and18.Flex Flash UN is used as reinforcementwhere minor movement in detailedwork is anticipated.■ Main Horizontal Areas (Stage 2)The waterproof membrane completewith integral reinforcement, is thenapplied to horizontal main roof areas,merging with the previouslycompleted detailed work to form amonolithic watertight barrier. Thesteps to be taken are shown on page19 and 20.Alumasc Technical Helpline +44 (0) 1744 64840015