Browse Forums Owner Builder Forum Re: My Owner Build 8Dec 07, 2015 9:07 am Owner Building at Jimboomba Woods in Logan City Qld. Blog : http://bandlnewhomebuild.blogspot.com H1 thread : viewtopic.php?f=38&t=68283 . Re: My Owner Build 12Dec 25, 2015 4:23 pm I put down the screed in for the two showers just before christmas for the second time and came back on site this afternoon to see how it was going and now it sounds hollow in places again. I tearing my hair out! I have done it twice and I just can't get it bond. . I'm screeding over waterproofing membrane on a concrete slab and using prime bond. So its costing me a fortune in re waterproofing and screed. I can't work out what I doing wrong. hoping someone can help me out with some info. Can I just tile over it? as far as I can see it can't go anywhere. Or am I just a dill and it will never stick? Re: My Owner Build 13Dec 25, 2015 4:40 pm What waterproofing membrane and screen mix are you using? Last time my tiler did the waterproofing, I then did another coat (it cant hurt). When I owner build again this year, I'll get WetSeal to do it for peace of mind. Re: My Owner Build 14Dec 25, 2015 4:45 pm Im using easymix screed premixed from bunnings and dunlop waterproofing with express bond breaking taping. I am planning on waterproofing over screed as well but unsure about the screed not bonding to the base Re: My Owner Build 16Dec 26, 2015 5:28 am Quote: I put down the screed in for the two showers just before christmas for the second time and came back on site this afternoon to see how it was going and now it sounds hollow in places again. I tearing my hair out! I have done it twice and I just can't get it bond. . I'm screeding over waterproofing membrane on a concrete slab and using prime bond. So its costing me a fortune in re waterproofing and screed. I can't work out what I doing wrong. hoping someone can help me out with some info. Can I just tile over it? as far as I can see it can't go anywhere. Or am I just a dill and it will never stick? The biggest mistake a lot of people make is using too much water in the mix. When it dries out it contracts too much as the water evaporates and the bond is broken. Brickies mortar on the other hand is very wet but for doing screeds the mix should be moist but only enough to hold the mix together . When you lay out the mix and start to level it in the showers use a piece of timber then a steel trowel. Tamp it down with the trowel to help compact the screed and help make it stronger. Once you have it roughly right go over the same spot with the trowel a few times. The surface should just start to " shine" a little as some of the moisture comes to the surface. I also don't know what easymix is. We used to use just sand and cement in a 4:1 ratio and the screed should be minimum 20mm thick all over preferably 30mm. By the way you should waterproof first then lay your screed on top. There is no need to waterproof over this again and may cause problems with the screed if you do so?? I'm only guessing here but we've never done it. Good luck. The rest of your build is coming along nicely. Stewie Re: My Owner Build 17Dec 26, 2015 7:31 am Hi Stewie thanks for the input. When I put it down it was like bedding sand it was just wet enough to hold itself together when pressed. The reason for the waterproofing on top is because the Concreter has made a mistake. Funnily enough it's only in the wet areas. The whole of the floor slopes to the corners of the room and it's about 15mm out being 32mpa it's not fun to grind (which I have done some of) I figure if I don't do it this way it'll just pool at the corners of the shower. Do you think I can still tile with the hollow sound underneath. I don't have any cracks and it hasn't lifted apart from not bonding to base. This is the screed I'm using. I went this way only because deliveries cost a lot being remote. Even getting milk means 60k drive haha Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: My Owner Build 18Dec 26, 2015 9:45 am As I said in my previous post, I've never used it before. The only time I bought a ready mixed sand and cement combo was for a small patch job for a client. I wasn't impressed with it as I thought the ratio of sand to cement was too high resulting in a weak sandy mixture. If it sounds hollow now, then after you tile over it , the floor will probably still sound drummy. Personally I'd rip it up and start again but that is also a fair amount of work too. Some specialist jobs are best left to the pros especially tiling. No tilers in your neck of the woods ? Stewie Re: My Owner Build 19Dec 26, 2015 6:54 pm Most tilers just do their own screed of just sand and cement (as stewie mentioned). I don't think you can waterproofing twice (under and over screed) properly. Under the screen, you install the base of puddle flange and then waterproof it. Water will seep into the puddle flange (assuming correct fall). You then install the insert bit of the puddle flange (i.e. smart tile) and set the height of it using the screed. I don't think you can successfully waterproof the smart tile, but there isn't a need to. Sorry but you have a crap builder. Probably too late now. For our last build I only spoke to builders who would allow me easy access (at no cost). I used my own sparky… 10 9928 If so what were the "special circumstances" under which it was granted? "Note: If the development consent is for 'dual occupancy' an owner-builder permit can only be… 0 14222 Waiting for the interest rates to go down is also waiting for the building prices to go up, you will likely lose. Perhaps you can get the builder to lock up stage, but… 4 3737 |