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Old 03-31-2008, 10:37 PM   #16
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Help with unusual liftable deck


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Originally Posted by skymaster View Post
cant you make the lid or cover "less" than the thickness of the decking you want to use? Use the foam and plywood method and then just deck it to match the other side; heck I would ICWS the plywood for good luck then deck it
Sure! The deck height does really matter... I was just thinking that maybe
plywood with decking right on top would maybe rot? But if it's not a factor,
I'm game!

Okay... I have to ask 'cause I couldn't figure it out... what's "ICWS"?

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Old 04-01-2008, 10:06 AM   #17
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Help with unusual liftable deck


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Originally Posted by icu2 View Post
Wow!
This has me thinking hard...
The only part that I wish I could have is the traditional decking on top, as
I'll have another deck right next to it, and I'd like them to kind of "blend"
together.

So let me ask, having never worked with this stuff before, is there any
way to pour it, and top with plywood... let it set up, pull the top plywood off, then use traditional
decking after it's set? Or does it stick so well I'd never get the top piece
of plywood back off? And it adds that much strength even though it's not
"one" pour, but filling in the "cells" created by the stringers?
Hey Steve...


i haven't worked with the stuff a lot ("knowing just enough to be dangerous" is my way of life, i think). So consider this accordingly.

If you put down a good layer of plastic (like 6mil vapor barrier) between the frame and the plywood, you should be able to remove the plywood after the pour. If you don't have an impermeable barrier... no, it ain't coming off.

However, if you don't have the top bonded to the foam, you lose the laminate/composite effect of the design... while the foam will still add strength, i don't think it will hold up nearly as well as it would with a solid deck. The key is to have everything bonded and not have any gaps. Having the base compartmentalized shouldn't make a difference.

Aside from the weight concern, i don't see why you couldn't add a matching deck layer over the plywood (using a thinner plywood on top, and attaching your decking risers to the stringers underneath it), just keep the risers parallel to the drainage slope, and use fairly open spacing on the deck.

Wood rot could be an issue due to drainage... i'm trying to figure out a way around that, but nothing's coming to mind right now...
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Old 04-01-2008, 10:23 AM   #18
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Help with unusual liftable deck


icu; Ice and Water Shield. Grace makes it, plus others. completely cover the ply in that before you "deck it".
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Old 04-02-2008, 08:28 AM   #19
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Help with unusual liftable deck


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Originally Posted by lanispet View Post
...However, if you don't have the top bonded to the foam, you lose the laminate/composite effect of the design... while the foam will still add strength, i don't think it will hold up nearly as well as it would with a solid deck. The key is to have everything bonded and not have any gaps. Having the base compartmentalized shouldn't make a difference.
...
Quote:
Originally Posted by skymaster View Post
icu; Ice and Water Shield. Grace makes it, plus others. completely cover the ply in that before you "deck it".
Thanks!
This sounds like something to try... and I'll do a search for the Water Shield... it sounds like it's just the stuff I need.

I guess I'll let you all know how it turns out (or doesen't!)!!
Thanks to all who contributed ideas! I really appreciate it!
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Old 08-19-2008, 08:28 PM   #20
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Help with unusual liftable deck


Just a quick update... I got the deck pretty much done! I ended up doing a basic frame, and even though the manufacturer
said not to tie the two actuators together, it seems to work fine! I just have the trim board tying everything together...
Here's a link the the finished product.
Thanks everyone for all the great ideas/suggestions!

Deck lift done!

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