Hydrotech Brochure - Barbour Product Search

Specification - SubstructuresTanking, Damp Proof Membranes, Bund Walls,Drainage Pits and Pile CapsPreparationIn situ structural concrete surface to befinished with wood float (not steel trowelor power floated). Concrete density 2160kg/m 3 to 2563 kg/m 3 cured for 28 days.Surface must be dry and clean of allcontaminants. All loose dirt or debris tobe brushed and blown clear using dry airor industrial vacuum machine.Prime concrete with Alumasc BitumenPrimer using hand held air sprayer at arate of 8-16m 2 per litre and allow to drycompletely. Do not prime metal or timbersurfaces.WaterproofingHeat blocks of Hydrotech MonolithicMembrane 6125 in an oil or air jacketedmelter to 205ºC and apply to substrate ata rate of circa 3mm thick spreading witha squeegee.Apply reinforcement of Flexflash Fpolyester in roll form and brush intoHydrotech Monolithic Membrane 6125ensuring no air pockets.Apply a second coat of HydrotechMonolithic Membrane 6125 at a rate of3mm thick spreading with a squeegeewhile hot, ensuring no air pockets.Install a layer of Hydrogard 40-AR RootBarrier, brush rolled into the final coatof Hydrotech Monolithic Membrane 6125with torch welded laps. Prior tobackfilling, install Hydrodrain 300drainage layer, looselaid over theprotection layer with 100mm overlappingfabric selvedge. All to be overlapped ontothe horizontal waterproofing by aminimum of 150mm.DetailingWhere minor movement or change inlevel direction or dissimilar materialsoccur, the reinforcement is to beFlex Flash UN, lapped 75mm overFlex Flash F.General NotesThe contractor is to install all details tocomply with the Hydrotech QualityAssurance Manual for Hydrotech hot-meltmembrane systems. Should any detailarise where it is not clear that this canbe achieved, the contractor is to seekadvice and approval for all fabricationproposals from Alumasc beforecompleting the works.On completion the integrity of thewaterproofing must be tested by meansof an electronic detector system to provethat the waterproofing is 100% free frompunctures and defects. The issue of theHydrotech warranty is conditional uponthe provision of a leak test certificate.The waterproofing contractor shouldinclude a sum for such a test within hisquotation.The above specification shall be installedin accordance with the manufacturers’installation instructions. Alumasc fixinginstructions shall be followed for productsupplied by the company. The works shallbe installed by an Alumasc HydrotechApproved Contractor, and the HydrotechWarranty shall be issued uponcompletion.Where the height of the vertical workexceeds 1000mm, mechanical retentionwith continuous termination bar fixed at150mm centres is required.24www.alumascwaterproofing.co.uk