expat paul Posted September 3, 2008 Share Posted September 3, 2008 This is a bit long sorry. I have a problem with a flat concrete double garage roof (8mx 7m) ie cracked and therefore leaks, should have repaired this last year [Www] It's the thin screed, which has cracked and is very easily removed so I can startfrom scratch, the roof itself is constructed by a precast T beams and blocks.The roof is at garden level so I would like make use of it as aterrace/BBQ area. My question is, what is the best method to redo it and makeit waterproof, I have had many differing offers of advice many of whichcontradict each other, so am looking for a difinitve way forward please. So far I have been advised1. remove exisiting screed, jetwash beams and blocks, applya layer of self-levelling compound brushed well in, to lock in the blocks.2. apply a waterproof layer, which could be 'bitumentype' paint or, 'epoxy' trowel on mixture, or lay-on membrane.3. 5cms of concrete, 2° slope, either, fibre reinforced, or weldedmesh reinforced, or both, plus, with or without waterproof admix.4. forget stage 2 before laying concrete but do it after.5. lay tiles using flexible water resistance adhesive andgrout Products suggested Grace Construction Bituthene 3000 Sika SikaDur 32 SikaTop 77 Schluter Ditra-Drain I am also laying a base for a future shed so will orderready-mix hence the suggestion for admix. Anybody point me in the right direction with method andproducts please, thankyou for your patience. Paul Link to comment Share on other sites More sharing options...
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