Decking over concrete

419 Views 4 Replies 3 Participants Last post by Nealtw, May 8, 2020

gti303

Discussion Starter · May 8, 2020

So my lower patio is very concrete feeling. I want to add some cedar decking to it.

Googling around has presented me with using Sleepers with PVC trim as spacers. Then putting the decking above that.

I have about 4" form the top of the threshold to the ground.

My main concern is that as you can see, my patio is meant to drain into the middle. Are there any complications if I go ahead and start doing this?

Will drilling tapcons into the concrete here cause any issues? Will there be anything else I should pay attention to?

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de-nagorg

· #2 · May 8, 2020 (Edited)

You will need to cut your sleepers to match the slope to make the top of them level , so your deck will be level, and Tapcons are brittle, so be careful tightening them down.

You need to leave gaps in the sleepers, or the PVC trim to allow water to get to the drain, but you know that.

There should be no problems with drilling the concrete, as long as you don't find any re-wire, then you might have trouble drilling that spot.

PS, there should be a step down in the doorway, but many places don't have one.

ED

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Nealtw

· #3 · May 8, 2020

How much of a slope is it from all the corners to the drain?

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gti303

Discussion Starter · #4 · May 8, 2020

Nealtw said:
How much of a slope is it from all the corners to the drain?

I can't find my laser for the life of me right now. But the slope is decent and even all around.. basically if i hose the whole area down, there is never gonna be any standing water.

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Nealtw

· #5 · May 8, 2020

gti303 said:
I can't find my laser for the life of me right now. But the slope is decent and even all around.. basically if i hose the whole area down, there is never gonna be any standing water.

You won't be able to find ground contact lumber and not sure you want to as it is a play area for kids. So you will have to protect the top of the lumber as well as making sure you have drainage under them. With out air circulation you might be working on the 5 or 7 year plan for replacing it.

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Decking over concrete

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