Browse Forums DIY, Home Maintenance & Repair 1 Jun 22, 2016 6:18 pm Hi all. I'm contemplating making concrete bench tops for my kitchen, but I wanted to trial on an outdoor table first. I was wondering if there was any additive I could add to concrete to make it waterproof? So it won't change colour when wet, won't stain, and things like that. I know there are sealants you can brush on after, but I thought something added to the concrete would be far more effective. Thanks in advance. Re: Additive to waterproof concrete? 2Jun 23, 2016 11:42 am Just use a penetrating sealer. This stuff is good: https://aquamix.com.au/products/sealers ... apid-cure/ Sent from an iPhone please excuse the ridiculous spell correcting software. My forum thread is at viewtopic.php?t=74944 Re: Additive to waterproof concrete? 3Jun 23, 2016 11:47 am Two things you can try 1 High cement content will make your concrete extremely dense and strong (but watch out for shrinkage cracking) 2 One of the additives you can use is "Bondcrete"(it's good) I know there are additives for brick mortar waterproofing but I am not sure how well they will work in concrete Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Additive to waterproof concrete? 4Jun 23, 2016 12:52 pm I've seen bondcrete at bunnings, I'll have to have another look! If that doesn't work added to the concrete, I'll use a sealer as well. But this is why I test, hopefully it'll turn out alright! Thanks guys. Re: Additive to waterproof concrete? 5Jun 23, 2016 6:40 pm We're having concrete benchtops in our upcoming build and I've done quite a bit of research. Fu-Tung Cheng is the acknowledged zen master when it comes to concrete benchtops http://www.concreteexchange.com/ Here are some good sites to peruse... http://www.howtomakeconcretecountertops.com/ http://www.concreteexchange.com/how-to-center/ Making your own From here.. http://www.guru.com.au/farm/ownerbuilde ... benchtops/ viewtopic.php?f=16&t=31224&start=0 http://www.instructables.com/id/Concret ... lid-Surfa/ http://www.naturalhandyman.com/iip/infc ... asics.html http://www.meet-mr-concrete.com/how-to- ... rtops.html http://www.meet-mr-concrete.com/concret ... p-mix.html Stewie Re: Additive to waterproof concrete? 6Jun 24, 2016 9:21 am Stewie D We're having concrete benchtops in our upcoming build and I've done quite a bit of research. Fu-Tung Cheng is the acknowledged zen master when it comes to concrete benchtops http://www.concreteexchange.com/ Here are some good sites to peruse... http://www.howtomakeconcretecountertops.com/ http://www.concreteexchange.com/how-to-center/ Making your own From here.. http://www.guru.com.au/farm/ownerbuilde ... benchtops/ viewtopic.php?f=16&t=31224&start=0 http://www.instructables.com/id/Concret ... lid-Surfa/ http://www.naturalhandyman.com/iip/infc ... asics.html http://www.meet-mr-concrete.com/how-to- ... rtops.html http://www.meet-mr-concrete.com/concret ... p-mix.html Stewie Great information, thank you Stewie! Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Additive to waterproof concrete? 9Jul 12, 2016 3:10 pm I'm making up a youtube video to add to my channel. The vibrating table I made up works well, but I didn't get the mixture right. I think I need a finer sand (it wouldn't polish up properly), and I tried to put some large stones in there, and it kept on cracking the concrete when I tried to pull it out. I'm going to do some trials with plasters sand & cement, and self leveling concrete, and see how they turn out. Re: Additive to waterproof concrete? 11Jul 18, 2016 10:31 pm Good homemade vibrator. But your mix looks way too wet. Just about every one of those links I read above mentions that the concrete should have minimal water in it. That's so it has less to dry out = less shrinkage and therefore will crack a lot less. Stewie To my understanding early saw cuts are to control shrinkage cracks, so doing them now would be pointless. Control joints may reduce ugly cracking during periods of soil… 3 9858 Hi all I need a guidance on how far I need to space expansion joints in the concrete driveway and its type (keyway/foam.) Contraction joints are at 3m max for a 125 slab. Thanks 0 10939 |