Browse Forums General Discussion 1 Dec 02, 2012 3:00 pm I need to pour a balcony topping floor over an existing sub floor and looking for product/materials advice. Its an older house, so when i have pulled up some old decking to see what was going on with the leaks underneath i found the floor is a concrete or screed (quite soft finish, can scratch the surface) poured with fall in to the centre where a drainhole is located. This screed floor is poured obviously on some sort of fibre cement sheeting. Which then bears on timber bearers that form part of the ceiling below. This whole floor area leaks and the drain in the middle is pointless - the conduit actually falls back to the drain, not away from it. Who ever built it made a mess of it - they used dynabolts after this was built to fix timber battens down which they then built a timber decking on - so basically when it rains, the water sits under the decking, puddles around the drain that doesnt work, then starts to leak through the holes in the screed floor and has created mold in the ceiling above. The long term plan is to remove the whole floor and rebuild that section of the house - but for now i really want to pour a topping slab of some sort over it soo that it firstly seals it from getting worse, but so that we can use the balcony again until the rebuild. So my issue is that i dont want to put too much structural weight by using concrete, which would be my first choice. The plan is to pour it level and just have the outside edge fall slightly, and keep a lip up at the door entry so water is not finding its way inside. Its undercover but in Perth it rains horizontally. Can anyone tell me what is the best option to use here? I need 40mm in the middle around the drain, down to ideally about 10mm at the thinnest points to achieve the levels i need. Im told that using a concrete mix with cracker dust instead of aggregate will shrink too much - not sure about that one? If i do a sort of tiling screed, would i need to seal it? I have read and been reccommended products that sound like they do what im after - but havent priced yet, just chasing good advice. Again this needs to last maybe a year or so and obviously dont want to waste money on it when im going to demolish it any way. Help me out someone. 7 5725 Building Standards; Getting It Right! 1. optional, you can but normally just use the earth from the main switch board 2. should be enough but the distance determines voltage drop - sparky should work it… 1 28759 |