Flashing and waterproofing covered balcony

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Old 06-16-11, 04:35 PM
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Flashing and waterproofing covered balcony

I could use a little help on how to properly flash a balcony off our bedroom. The floor had rotted away by the slider door, and I have to replace the floor. I want to finish it with Duradek or something similar. There was no flashing at all on any of the walls, which probably explains why water was leaking through to the garage beneath the balcony. I removed the leaking flagstone floor back to the plywood and I've cut back and removed the stucco (up 6 inches from the floor) around the entire wall perimeter and removed the wire to expose the tarpaper. I now need to cut out and replace the rotted portions of the subfloor and get it ready for flashing before I have the wall re-stuccoed. I purchased some Zavlar (liquid rubber) to use on the project as well. We've had a lot of rain this year, but very little gets onto the balcony because it is fairly well covered. I believe that most of the damage that rotted away the floor was because of snow, and freeze/thaw conditions over the years. Can anyone tell me what process I have to go through to totally seal the floor and how to install the flashing? I'd appreciate any help I can get. Thanks... Mario
 

Last edited by shermar; 06-16-11 at 05:41 PM.
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Old 06-24-11, 04:24 PM
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Is the garage ceiling the balcony roof? What type of sleeper set up do you have and is the roof properly sealed? Maybe posting a few pix would help us to see what you see. Flashing is definitely a good starting point, but there may be other issues we can help with. http://www.doityourself.com/forum/el...your-post.html
 
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Old 07-05-11, 11:43 AM
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Sorry it took awhile to get back to my post as I was away. The balcony floor is actually the front portion of the garage ceiling, and a walk out from the master bedroom. Here is my plan. You can have a look at the pictures in this post and tell me if I'm on the right track. As in my previous post, I have removed the flagstone floor, and cut back the stucco (that originally went right to floor level) up 6" from the floor to expose the tarpaper which I cut to 2" below the stucco. My plan is to sand the existing floor and to use a leveling compound to fill any gaps and screw holes in the plywood. Then I was going to sand the filler, and make the floor smooth and level. Next, my plan was to install cant strips along the entire perimeter of the balcony to create a runoff to a center drain. Once the cant strips were installed, I would then do 3 coats of kavlar (liquid rubber) up to just below the tarpaper on the perimeter and also on the entire balcony floor, reinforcing any large gaps and inside corners with kavlar and geotextile fabric for strength. Once dry, I should have a little better than 1/8" thickness of the liquid rubber. Then my plan was to lay in Duradek, or Deckmaster vinyl sheething on the deck, and also have it go up the perimeter walls to almost the tarpaper. Then apply new tarpaper under the existing tarpaper and over the Duradeck to just above the cant strip. From there I was going to install stucco stop to just above the cant strip, and then do a brown coat, scratch coat and finally stucco. I think this would give me a fairly dependable seal, but I want to make sure that I'm on the right track. Here are the pictures of what I'm dealing with. http://s1198.photobucket.com/albums/aa441/shermar104/?albumview=slideshow[/URL]
 
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