Thanks Darryl for a very insightful video with a Aussie perspective. Cheers mate.

I'm doing a floating deck for my balcony in spotted gum and this has been very helpful, man. Thank you!

Thankyou Darryl this video was very helpful as I am about to try to tackle the same project myself. You are definitely right I have been searching KZfaq for videos on how to deck over concrete and there aren't many at all or videos as easy as this one is to follow especially for myself being a beginner DIYer and trying to give it a go myself. Thankyou for taking the time in creating a great how to video that is easy to follow.

Good job, mate. I learnt a lot from this project, Thanks for your time.

Thinking about doing this in the future Darryl! Really appreciate your effort in creating a nicely detailed how to video!

Love it! Will be following these techniques soon. Also, nice T shirt!!!

Excellent video -- also helpful to me over here in the US. I've had the same problem you mentioned: not a lot of KZfaq videos on how to deck over concrete. Plus, each concrete stoop is a bit different, and each project uses different finishing material (hardwood; composite; treated softwood). Thanks for doing this and for being approachable about it.

Thankyou very much Darryl. I reside in Melbourne and was looking to install deck over my alfresco as I am a DIY beginner. Your video was definitely the most helpful one that resolved many of my queries related to products and method of work. Keep up the smile and good work. Your grandfather is definitely proud of you. 😃

Cheers mate, really helpful for a beginner like me!

Thanks for your great help 👍

Really encouraging to see the way you designed your foundation with the joists. And, your content is very straight forward while using some of the more modern technologies - so the rest of us don’t have to somehow acquire knowledge of the more traditional methods. I myself have a very uneven patio (however brick) and have very low clearance between the house and the fence. The lowest is about 2”, and the highest is 4”. Is it safe to use the 2x4 (I think that’s what you used) on its flatter side (the 4” sitting flat against the slab)? When I see others using 2x4s, they install the joists on the 2” side.

My parents' old house has an atrocious concrete porch, doesn't even have railing and its a good 30inch drop! Plus, they are well into retirement and need a ramp, so the first step in my plan is to deck over the concrete like this, then the stairs, then install a ramp coming out the side to the driveway. There's enough of a height difference between the door threshold and the concrete to fit some kind of decking, but I might have to rip the "joists" down to a half inch to accommodate the deck boards. The question remains, how to skirt the sides? I want to hide the concrete entirely, so I thought about using red brick to match the exterior walls, but wood deck with brick skirting doesn't really work. So I guess I will just paint it white or something.

Looking good

Thanks Mate 🙏

yer it did help and speaking of local knowledge, not that i have done this but it could pay to do a self leveling cement coat on the slab?

Nice

Very informative mate!! Will be doing something similar but with ecodeck boards. Just need to get the slab to stop pooling water below the deck before I start. Also, treat yourself to a longer impact bit haha. Thought it was some sort of magical driver at first, driving screws without a bit.

Can’t beat spotted gum mate, durability 1 - very hard wearing and beautiful colour range... nice job Darryl, very nice indeed 👍 The only thing I would have to say, and this is from someone who sells hundreds of metres every week, is make sure you pre-oil it on the bottom / underside, the edges and the ends where it butts together to stop cupping. Cupping is more prevalent in the wider boards however depending on how much water the boards get, cupping can still happen on the narrow boards too. The problem is that every time the boards get wet ( be it rain or hosing down ), the moisture will sit on that concrete slab underneath. Then the sun comes out and heats the top of the board so as the board is heating and contracting on the top, the capillary action draws moisture up from the slab and into the underside / bottom of the boards causing swelling. So the top shrinks and the bottom expands - leading to the boards looking like a banana in no time at all, can be as little as a month or two ( had 1 customer just before Christmas have to replace a heap of boards after just 3 weeks ! 😳 ) So oil the crap out of the bottom / sides / ends as mentioned with the best oil on the market - ‘Cutek’ - don’t use the cheap ‘made to a selling price’ oils from the large green hardware chain - but get the good ‘Cutek’ oil and it will help minimise cupping. It won’t totally stop it but will help prolong the inevitable. Anyone looking to do a similar job over concrete, keep in mind the Australian standards for decking is a minimum 300mm from below the deck to ground level and no manufacturer of decking ( or even the wholesalers ) will warrant any decking against cupping when laid less than 400mm off the ground / substrate. Great clip though mate and nice looking timber indeed, I love the old spotty 🇦🇺🇦🇺👍👍👍

Great work Darryl. 👍 I understand the frustration at getting joists. Took me 7 or 8 months to finally get some! I was going to get Merbau but chose spotted gum too. Now need to install.

Thanks mate. Good tips. Your grandpa would be proud!

Thank you for the video. It’s very useful. I have a situation where in order to keep the termite protection warranty the company has advised to keep 25mm gap between the brick wall and the deck. What’s your experience in these type of situations? 25 mm seems a bit gap and I’m worried that it’d look ugly.

Very helpful👍 someone has told me i can use h4 timber for decking base so I don’t need to leave space between the wood and concrete.. is it right? Its a covered alfresco area. My decking area would be 3.5m x 4m. Need suggestions 🙏

Looks amazing! I only had 1 question; with the gaps between the boards what about dirt, debris and potential insects ie wasps building nests under the decking? Oh, one more question, I love the rubber on top of the 2x4s, maybe I missed it, but what about moisture getting under the 2x4s and moisture getting in the holes in the treated lumber?

Hey mate, I'm doing a similar deck. I'm just struggling to work out how to do the side bits (the vertical sides). It's all going over a concrete slab but the sides will stick out and look silly if I run a joist vertically, if that makes sense. I want the decking to hug the wall as tightly as possible basically. I was thinking about just using some 5mm window spacers, and drilling the through the decking board straight into the concrete. Effectively there'd be a 5mm gap. Is there any issue with this? Or is there some other way to get the decking boards to hug the vertical border sections. Thanks in advance

Hi, why in particular did you want to use 90 x 45 joists instead of 70 x 45. Did you need the height? I am doing the same over a very large area (54 m2) and feel that 70 x 45 will do the job.

Hi Darryl, I love your channel. With the joists, you’ve gone with 90x45mm. What if you need more height? Turn them long side up?

nice work 🍻 Have you replaced your AEV tools with Milwaukee? I didn't know Milwaukee was available down under.