Inexpensive waterproof outdoor padding

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Old 08-08-17, 08:43 AM
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Inexpensive waterproof outdoor padding

(In reference to my earlier post on building out a 20'x20' platform:
http://www.doityourself.com/forum/de...m-curl-up.html)

The goal is to pad the 20'x20' platform.
Initially I wanted to elevate the platform, lay down a wrestling mat, and cover it with a waterproof tarp and tie down the tarp on the edges of the platform.

Two cost-related problems arose:
a) I only have two 10'x10' mats (=10'x20') so I'd have to buy two more at $400 each (=and additional $800) which is going to be cost prohibitive.

b) To elevate it would require laying down 6x6s which is cost prohibitive so I'll have to make it flatter using the cheaper 2x6s but then water from the ground during rain makes its way up more easily to the bottom of the mats.

So the need is for low cost padding that can withstand water, anything come to mind?
 
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Old 08-09-17, 05:35 AM
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Carpet padding is the answer.
Guys selling on Craigslist all day long.
4 layers of 1/2" thick make it a full 2".
Put a waterproof tarp underneath and above, spray adhesive to glue the pads to each other and we're done.
 
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Old 08-09-17, 09:13 AM
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I follow your thinking but water always finds a way through our best intentions and with no good way to get out will begin to grow things.

My thinking would be a surface that is allowed to drain through and arround with ventilation underneath. I realize it would be more expensive but should last a long time.

The sun also wrecks havoc on anything outside so whatever you us would need to be UV protected.

In most cases decks are built to be solid, but in your application some bounce might be good. That consideration might take you down to 2x4' on a cushioned support. Just thinking.

Bud
 
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Old 08-09-17, 10:00 AM
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Going to put one of these on the bottom of the carpet padding and another on the top:
Sigman 20 ft. x 20 ft. Silver Heavy Duty Tarp-SPT020020 - The Home Depot

Uv, waterproof, and heavy duty, what's not to love
 
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