Impervious deck surface thoughts

[MikeT]

Greetings,

On my beach house project, the local lumber supplier mistakenly delivered 30 sheets of PT plywood.  Before I have them pick them up, I thought I would get your thoughts on what might be a good impervious deck.  I am looking at this because on my sloping lot, I will have a deck below as well, and I thought that if my upper deck was impervious, then the lower might be an outdoor room when the weather is wet as it often is in Oregon.

Thanks,
mt

[glenn kangiser]

Mike Oehler is now recommending EPDM liner for underground cabin roofs.  There are also membranes that can be had from roofing supply places, then possibly a wood deck on sleepers over that.  There are expensive deck coatings I have seen used on apartments also.  Commercial flooring guys had a lock on the process so you had to buy from them -- not always a bad idea in specialized applications though.

[John Raabe]

Here's a link to an earlier product discussion:

http://www.countryplans.com/cgi-bin/yabb2/YaBB.pl?num=1149270414

[Pala]

We used EPDM on the Parent's Getaway.

[glenn kangiser]

Good to know.  Now you can give us performance reports, Chuck.  I understand that it is pretty good material.

[PEG688]

 Better hope those drains never get plugged in the winter I'm sure you have a door onto that deck , is it raised up a couple of inch's?

We have done two  similar decks , one is open at the edges and sloped to drain ,





We scuppered it like this , 4 ea. spaced evenly ,   the Versa deck which is a sort of cross between vinyl and EDPM , rolls right uinto the scupper.

Come to think of it that rotten place we worked on last month now has three new Versa deck surfaces , they all drain right of the edge , sort of like the firts photo.

I'll try to get a few photo's of those decks .  

[PEG688]

BTW the ply under neath is not treated , I doubt Chuck is either, they want a good smooth  face , and come to think of it I did one about ten years ago over in Mount Vernon , Wa. when that stuff was new , they at that time wanted a AC 7 ply , plywood. The last few where just  T&G  ply , 1/2" wonder board over that and floated smooth seams , nail heads etc .

What under your Chuck?

A buddy of mine did a similar  type deck he had a Rhino liner guy come and spray it on  , which was  PITA as the guy was set up more for you to come to him , kinda hard to drive a deck to his shop , anyway Garry got it done and said it worked well . He even thought about some way to set up to do the spraying , but Garry's always been a "Great  dreamer / inventer " of the next get rich quick setup, he's still normal / middle class