Browse Forums General Discussion Re: Driveway 2Aug 20, 2021 7:29 pm It looks more like a deterioration of the concrete surface than a stain. It's a little hard to tell from the photos but it looks like it's a patterned concrete that the surface is breaking down. Does the brown area look like it's above or below the surrounding surface? Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: Driveway 4Aug 20, 2021 8:14 pm chippy It looks more like a deterioration of the concrete surface than a stain. It's a little hard to tell from the photos but it looks like it's a patterned concrete that the surface is breaking down. Does the brown area look like it's above or below the surrounding surface? It's above ,I tried CT50 from bunnings but it didn't even look at it, was thinking may need to grind it off but it's a huge driveway. Re: Driveway 5Aug 21, 2021 3:04 pm It could be worth trying a product called Orange Solv from a company called Citrus Resources. You can buy a 500ml bottle from Godfreys vacuum shops. pour some on the stain and use a scourer to agitate and then hot water to remove the chemical. 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 9862 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 10940 |