Browse Forums Bathrooms and Laundry 1 Nov 20, 2016 6:57 pm Hi all, In the process of a bathroom renovation, and coming back interstate to see the progress, for some reason, the builder had decided to use Duratex Exterior Wall Cladding (https://www.bunnings.com.au/bgc-fibre-c ... d_p0710117) for the wall plaster. I am pretty sure this is incorrect and will cause problems in the end. Isn't villaboard or some other type of wet-area plasterboard supposed to be used? The builder(s) has argued that my husband (who likes to be involved in all of this) had chosen this product as it was 'waterproof' and hence agreed that it would suitable to use too. No waterproofing has been done because they had explained that the blueboard has a waterproof coating on it already. I thought a waterproof membrane paint always had to be applied regardless? I am new to all of this - and hence am very nervous about what the possible ramifications are. I have heard these blueboards don't allow the tiling to be stuck/adhered well (and hence tiles can potentially fall off) and that there is no actual waterproofing nor water-resistant due to the materials in these boards. I am stressed because all I can think of in my mind is mould, water damage, termites, ... Tiling has already gone up (no grout yet) but should I be halting this entire thing, or, as an inexperienced housewife, am I just making something out of nothing? Could someone please explain if there are any issues with what's going on (and provide an explanation/rationale so that I can discuss this with the builders as to their poor decisions?!) as I do not know who to trust? Thanks so much Re: External Cladding used in Bathroom Wet Area, problems? 3Nov 20, 2016 8:43 pm Have any areas of the bathroom been waterproofed? The blue board does not act as a Waterproofing, even when sheeted on the exterior of a home it still requires sealing with an acrylic render or waterproof paint. If it was used in lue of villaboard it wouldn't be the end of the world, but it would still require Waterproofing in the wet areas, I.e shower base and walls inside of where you screen will be installed. If the shower area has not been waterproofed before tiling, make them pull it down and start again. Kind Regards James Mason www.renovationjunkies.com.au Re: External Cladding used in Bathroom Wet Area, problems? 4Feb 15, 2020 4:42 pm I’m not a tradesperson but I’ve heard water should never get to the backing anyway because the wet area is supposed to be waterproof. Apparently water wicks through cementitious boards on contact. Unsure about compliance requirements but if there is water getting to your backing board, I think you’ll eventually have serious problems with mould growth and with water escaping from the wet area. No. The same paint that they paint the wall with will be fine. The builder probably had every intention to paint it and not leave it black. 7 3121 details like this are not shown on the elevation, talk the builder if you can’t live with it, expect to pay for the alteration though. 1 675 Re my second point – yes exactly. And often it may take additional time if the manufacturer recommends no more than X meters… 3 6559 |