WHY!?!?!? Wood decks are a maintenance nightmare. Stick to your slab...use the money on a pergola or furniture.

A picture would help. Is the lumber you have treated wood?

Really need to see area to comment. But I will comment on size.....6'x8' is barely large enough to be considered a stoop and 8'x10' is not much better. Neither will produce a deck that has much functionality. Go big or go home :-)

btw, a deck does not have to be a maintenance nightmare! I live in the winter wet PNW and virtually every home has a deck of some sort associated with it. They do require a bit of annual upkeep - spring power washing or cleaning - and periodic resealing or staining but it is nothing overwhelming or overly taxing and is easily accomplished by an older single person like myself :-)

Agree, deck sizes are barely functional AND I would not add to your maintenance by covering a concrete slab.

Thank you all for the comments. We want a deck so our kids does not fall down on the steps (it happens a few times when they rushed to play in backyard, our current concrete porch is very small with steep step).

I will add photos soon. What maintenance need to be done for the deck? I’m living in north CA and the planned deck area is fully covered so will have little rain or direct sun light.

Thanks

If you look into a number of YouTube videos you might find very useful answers to your questions and get a feel for scope. I think redwood is most desired wood for deck. Framing lumber can twist and warp in humid areas? My two cents!

It sounds like you just need to fix the steps.

I think I misunderstood, and sounded to me that you just wanted a wood deck over your concrete pad. After reading your comment on having a concrete porch with steep steps, I get the feeling that you want to remove the porch and build a deck, and that deck will be raised over the concrete pad. If I am right, and you are building a deck off the back door of your home, and build less steep steps. and you are asking if you can just have the posts you already have rest on your concrete? I am not a builder, but from what I understand, it is not good to have wood touching concrete. Wouldn’t you have to drill into the concrete and set those metal brackets in the concrete that then have the posts bolted into? I don’t know CA weather, but in Canada the wood weathers to a grey even if it is protected. If you paint it, it will be a yearly job (here). So my advice if you can afford it and are staying in your home for few years, is to use the composite deck boards.

How much maintenance a wood deck requires depends on what kind of wood you use. On one end of the spectrum, you have pressure treated, which is what most people imagine when they think of high-maintenance wood decks. On the other end, you have ipe, which is virtually maintenance-free as long as you don't mind a gray deck. The advantage of ipe over composites is that it is much more durable.

Regarding your questions about wood and concrete, I think we'd need more details about what you have in mind, and of course some pictures.