under deck water containment system


  #1  
Old 10-09-02, 10:35 AM
lrssms
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under deck water containment system

I have two decks with enclosed storage areas under them (cement floor). Rain water leaks through the deck flooring creating a damp area - everything rusts or becomes covered with mold. Furthermore, I have a basement that also has a very bad mold problem where the decks are. Boxes lose their integrity within a few months.

I want to install some sort of under the deck system to collect the water and divert it off to the side. The ground around the house is sloped away, so I know the problem is from the rain collecting under-deck storage area.

The storage area is roughly 8x12 and 5 ft high. There are lots of under-deck dry systems that look pretty. This is a storage area only and therefore, I don't want anything fancy - just something practical. I can attach furring strips to the joists to create a drainage angle, but I am looking for suggestions as to what to underline the deck with.

one thought is to attach a heavy plastic sheet(tarp) to the joists followed with plywood (I would seal each nail hole) and install a gutter on one side.

any other ideas?
 
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Old 10-09-02, 11:16 AM
Doug Aleshire's Avatar
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Neeed to have it dry under deck?

lrssms,

If money is the major factor, then the tarp would work but I think there are better alternatives - I don't know what the cost would be but have you looked into the corrugated fiberglass or plastic panels. If you install them under the deck with a 3-4" pitch away from the house, you should be OK.

Of course, the ones that look pretty but are extremely durable especially for a changing climate, durability is a key factor. Below link is one alternative - about $10.00 sq ft installed, unsure of actual price for product.

http://www.dryspace.cc/
http://www.dryspace.cc/install_16.html
http://www.charlotte.com/mld/sunhera...ng/3696551.htm

Here are some other similar systems;

http://www.underdeck.com/

http://www.dry-b-lo.com/

Hope this helps!
 
  #3  
Old 10-10-02, 08:35 AM
lrssms
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I looked into these

I looked into most of these systems. For the size of my deck 8x13, they want almost $400. I hate to spend that much on a storage area that no one will ever see.
 
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Old 10-10-02, 08:45 AM
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lrssms,

So how about the corrugated fiberglass panel idea, does this seem better? The tarp may look tacky but the panels may be easy to put up and no worry about rot.

Just wondering what you might be thinking.
 
  #5  
Old 10-10-02, 08:59 AM
lrssms
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lookin into it now

I like the idea, and it would be better than a tarp and substantially less than the under deck systems. I'm looking into the cost now. will let you know
 
  #6  
Old 10-11-02, 01:08 PM
MeffaDawg
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I'm interested in doing the same thing under a deck I have. Doug, do you have a link to the fiberglass or plastic panels? Or do you know if the big-box stores carry what you're referring to?
 
  #7  
Old 10-11-02, 01:14 PM
lrssms
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I am going to do it this weekend

I can get the fiberglass panels at $10 a piece 26 inchs wide 8 ft long at 84 lumber - homedepot was expensive. I cost out the project at $90 compared to the 400-750 price tag of the systems.

the size of the area was 8x13.
 
 

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