Browse Forums General Discussion 1 Nov 21, 2011 6:37 pm We have just finished laying our new decking only a couple of days ago. We used mixed Australian hardwood bought from the auctions. We haven't even had a chance to seal it yet and it's getting a lot of black spots all over it - more so in some areas. We've tried sanding it out but without much success. At first we thought it could be mould but we don't think it's this. I've included some pics for you to take a look. http://i683.photobucket.com/albums/vv19 ... ci/126.jpg http://i683.photobucket.com/albums/vv19 ... ci/124.jpg What could it be because we are stumped - it looks so awful on our nice new deck and we are hoping it's not permanent!! I've also posted this in the Outdoor Living area for more traffic as we need to resolve this problem ASAP. Re: HELP! Our new decking has black spots - what could it be 2Nov 22, 2011 12:33 am It's tannin staining. When the timber gets wet the tannins bleed. You can sand it out but if it has been quite wet then the staining can be a little deep. Once the oil goes on it wont be so noticable. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Hi, as per the subject. Does anyone have any recommendations for the best value decking oil (Bunning is close to where I live) for a treated pine deck? Thanks 0 27279 ![]() Black tile grout that was once dark has turned into a lighter, chalky color. 1 15407 I second taking your plans elsewhere. They're yours (unless you ended up in one of those cheaper arrangements where you don't own the rights and the build will be tendered… 2 34105 |