Waterproofing A Deck - Looking For Ideas

Laketahoedan

This may be something I want to post in the roofing section?

I am building a deck under another deck and want to prevent dripping water/melting snow from water torturing the people on the deck below.

Here is the Deck in question. I will be building a deck under it with sliding doors replacing the 2 existing bedroom windows, and sinking a hot tub in the middle supported by its own platform.


If there were no blocking between the joist bays I would look towards using galvalume or corrugated roofing sloping out to a gutter.
The glulam girder would bring the roof way down.


The top of the existing deck is right at threshold/ff height so doing any kind of build up is not an option?


I was thinking of bringing the stairs down from where the umbrella is then to a landing at the front left corner (lookers left) then down to a landing near the middle of the new deck then down to the ground far lookers right.

any ideas are greatly appreciated.

LTD

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bujaly

How much would it bring it down? Also, what is the main purpose of this deck, just as a hot tub area? Would they need a "standing" view?

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Laketahoedan

If I were to run a sleeper roof out from the house it would need to clear the 6x12 girder ( I said glu-lam before-oops) So if I was sloping 1/4" per foot that would put the roof down from the existing joists 8" (at the house) which is quite a bit when you are trying to maximize space.

The decks main purpose is to be an outside living area from the 2 bedrooms on this floor, and for a hot tub which will be sunken into this new deck.

I am sketching out running roofing across the joists so that the runoff would land to lookers right of the deck. I would run one main system from the house out to the girder and one on the cantilever?

IF this is possible then I will go from 0" to ~6" in the 23.5 feet span of the deck.

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bujaly

So ur saying that u have a 32' run from house to current girder??? If you run it to the right to left at 1/4" as well, you would then have it come down to 3'? The ladder of the 2 sounds better..

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Laketahoedan

No, from the house to the girder it is 8'. And the girder is a 6x12 so the roof at this point would be below deck joists 11.5" working backwards towards the house at 1/4" per foot would put the roof below joists 9.5" (11.5-2")

I am looking closer at running it from Left to right where in the 23.5 feet I would go from 0"to <6" below the far right joist.

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BuiltByMAC

Dryspace and a double gutter system worked out well for me in a similar scenario....


You might find some useful info in this thread:
http://www.contractortalk.com/showth...light=dryspace

Mac

Laketahoedan

Thanks for the link.

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davidlockhart

Run the corrugated into a gutter. Hide the the gutter behind the beam until the glue lam. Run a gutter to the end of the GL...
That much I hope you know. What I would recommend is having the upper 'gutter' become the lower water feature by drilling holes so they can "hear and see", yet not "feel". It also makes it a water feature if you want to get technical. Or, am I obviously missing something.

Jake Stevens

Check out this web site www.rainescape.com it's a great product and works.

Laketahoedan

looks interesting; however I do not think that will work for me.
*The rainscape system has to be installed prior to decking and
*My deck joists are 2 foot on center. Rainscape is for 12" or 16" bays
*and I have a ~2' section to do

I am going to run metal roofing lengthwise across the joists (on either side of the girder), using firstrips from 0 to 6" to create slope. I will probably use a gutter at the end to catch it.

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buckeyeso2

we used this product and it worked great. We used it on top of joists, but it can also be used on bottom of joists. dekdrain.com

Giftcard

Check out this site. http://www.drysnap.com/

Forry

What about upselling the client a roof over the UPPER deck?