Browse Forums Building Standards; Getting It Right! Re: Paint Peeling - Plaster too soft? 2Feb 01, 2009 6:10 pm Blog http://wherethehearthis.blogspot.com/ Build https://forum.homeone.com.au/viewtopic.php?t=6634: Yard https://forum.homeone.com.au/viewtopic.php?f=19&t=27687&p=378401#p378401 Re: Paint Peeling - Plaster too soft? 12Dec 11, 2012 6:49 pm GOODLIFE - Bravo - BUTLER http://getmistyfied.blogspot.com.au Display 20/02/2012 PPA 01/04/12 Prestart: 25/07/12 Settlement: 31/07/2012 Contracts:August Slab 19/11/12 BRICKS 10/11/12 Roof 16/01/13 Re: Paint Peeling - Plaster too soft? 15Apr 16, 2015 12:11 am I know this happened a long while back but we are now having the same issue. The builder is not interested in the plaster issue and so we now have to go down. The path of hiding a building inspector and a formal letter to the building tribunal. We are also in WA and we're just wondering if you were able to resolve your dispute with your builder? Thank you for taking the time to read this Re: Paint Peeling - Plaster too soft? 16Apr 24, 2015 7:38 pm Hi Melaqua Unfortunately render isnt a structural component and there are no codes to refer to..[Sorry] I see the same problem with brickwork where brickies use a lime and cement mortar and add calair? it should be one or the other never both.It sounds like the plasterer ran out of lime and decided to use a plasticizer instead.... IMO a no-no! Please leave a PM I am in WA Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Paint Peeling - Plaster too soft? 17Apr 26, 2015 1:58 am I am having similar problems here in WA.. if anyone wants to share what specific tests they got done that would be great. Photos in album here, sadly they don't seem to link properly inline: https://www.icloud.com/photostream/#A15nhQST7d1Sq Heres what I wrote in my thread and some pictures: Hi Folks, I am hoping some people may have either anecdotal or professional-level advice. We recently had a new home completed in Baldivis, WA about 6 months ago. We are having a *terrible* time with chipping paint and plaster off the walls all through the house. For clarity this is in WA where we are unique to most other states in that most houses are double brick, and the inside walls are basically brick, followed by a layer of concrete/cement about 5-10mm and then a 2-3mm layer of "Hardwall Plaster" to give it a flat white finish, similar looking to plasterboard but obviously very different. While it is certainly being caused by impact damage (something has hit the wall) it seems to be coming off *really* easily --- the worst case is in the laundry where the plastic laundry bins against the wall have taken out a horizontal strip in the entire corner just from sitting against the wall and being bumped into as we do the laundry. I've never had this much trouble in any rental I have ever lived in with tearing paint off the walls. Where there is no paint (it's already come away), I found that it is really easy to scrape away the plaster with my fingernail.. however in areas where I've used a plaster filler mixed from powder to fill channels cut in the walls for cabling, I cannot (it is rock hard in comparison). This also may sound extreme, but I tried taking the laundry baskets which are doing he worst damage in the laundry and if I hit the ridge against a normal wall area the paint and paint&plaster scrapes & dents off quite easily.. the same thing on my filled+painted areas (with the same paint) don't budge at all, even when hitting harder. I feel like they've used a poor composition of the hardwall plaster and I am considering bringing it up with the builders but I was hoping for some input on anyone else with experience with this to give me a bit more confidence in my concerns. Was also considering getting a building inspector to look at it as a one-off before taking it to the builders. Thanks! Re: Paint Peeling - Plaster too soft? 18Apr 26, 2015 9:17 am This may not be restricted to wa only, Suspended slabs require brickwork which is generally plastered (mixed wet)... standard throughout Australia. To be fair it could be a 1. Lime manufacturing problem 2. Site contamination problem 3. Deliberate careless workmanship 5. Simple mistake that was covered up Unfortunately, WA inspectors arent qualified nor licensed to deal with such problems as this is out side the BCA ( re NCC).As for the repair process you will need to...... 1.Identify and deal with root cause 2.Chip back the defective plaster and replaster 3.Gyrock/plasterboard over the defective plasterwork Either way this would be very expensive repairworK, having said this prevention is always better than cure (sadly,no cure here). So there are things you (homeowner) can do when you are on site taking construction photos...simple tests that construction (material) engineers use and immediately bring these concerns to the builders attention for his building suppliers reps/engineers. Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: Paint Peeling - Plaster too soft? 19Apr 26, 2015 2:38 pm I'll leave it to someone like SBIMguy above with all the tech stuff but in my experience of sand/cement render followed by a white set over the top and the symptoms you list I'd say without doubt No.3. We've seen a few houses where to speed up the job and for ease of plastering the guys have either used too much lime or not enough cement in the first coat. This basically leads to the render being not very strong and easily dislodged. An easy way to test this is to chip off a section of the sand/cement plaster and have a look at the colour ( without any white set included ). If it is a medium to dark grey they have used lots of cement. A light grey and they haven't used enough. I'm pretty sure someone here on the forums will be able to point out the relevant AS indicating the minimum strength of render mix. Any lab would be able to tell you the proportions they have used on analysis. It is usually in the vicinity of 8 sand:2 cement:1 plasticiser depending on whether they used lime or not. If it is just the white set coming off, once again to speed up the job they may not have given the original render enough time to dry before doing the hardwall or have gotten their mix proportions or prep wrong. Stewie Re: Paint Peeling - Plaster too soft? 20Aug 14, 2015 6:13 pm I'm seeing the same problem in my home. Again the painter blamed the builder and vice versa. We used Duplux oil based plaster sealer but the paint still comes away very easily. I'm wondering if there are any other sealers on the market that will penetrate into the plaster and bond better. That way at least when we repair the bald patches, the new topcoat wont suffer the same way. 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