DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Roofing and Siding > Concrete Flat Roof Leaks




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Old 11-13-2012, 10:26 AM  
o2284200
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Default Concrete Flat Roof Leaks

Hello,

My 408 sq ft enclosed patio has a flat concrete roof/deck that water ponds up on and has at least 2 large cracks, which leak into the patio below. The roof/deck appears to be a solid concrete slab, no attic with some kind of coating over it.

The soffits are cracked and there is exposed & rusted re-bar showing.

The roof/deck also has a wooden railing system, which is failing & needs to be removed/replaced BUT it is attached directly right into the roof/deck.

What's the best way to repair?

Thanks!


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Old 11-13-2012, 12:08 PM  
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Please post a pic of the area you are talking about.


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Old 11-13-2012, 01:41 PM  
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Here are some pics, thanks!
Photo_101912_004.jpg   Photo_101912_002.jpg   Photo_101912_003.jpg   Photo_081512_011.jpg   Soffit Rebar.jpg  

Photo_101912_006.jpg   Photo_101912_007.jpg  
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Old 11-13-2012, 03:51 PM  
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If this were my house I would eliminate the railing, install a T.P.O. single ply membrane roof system and forget about reinstalling the railing. Just my
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Old 11-13-2012, 05:04 PM  
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I agree with Oldog, remove all the railling and after repairs are done to concrete intall vinyl decking membrane and go with aluminium railing, if posible go with the one that bolt to the face of the deck so you have no holes in the deck top. The only catch is, it would want to run 6" up behind the siding and under the door threshold.
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Old 04-06-2013, 12:01 PM  
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I'm in the process of removing the railing to replace with aluminum as ideally I'd like to use this deck often and set out patio chairs, etc... I've been assured by a local Structure & Foundation professional whose opinion I have trust in that this is primarily a water issue starting at the main roof down through the soffits, stucco & paint and broken gutters etc..

FWIW, Without the mention of fixing the cracks on the roof-deck floor first; local roofers have recommended the following:
1) Built-up roof systems with new flashing & drip edge.
2) "Waterproofing systems" like:
A) StableCrete
B) Sealoflex
C) Sonoguard
D) VulkemŽ 350

If it's not too much trouble, I'd appreciate opinions on:
1) "BUR" vs "Waterproofing system".
2) The different "Waterproofing systems".
3) Whether or not it appears necessary to address the cracks on the roof-deck floor before applying new roofing system?

Thanks!

Last edited by o2284200; 04-09-2013 at 04:34 PM.
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Old 04-07-2013, 10:31 PM  
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I would repair the surface with some concrete patch and cover the whole thing with vinyl decking and make sure it's water proof, that would invulve cutting the siding back to allow it to run up the wall 6". You should repost the photo of the rebar showing in the concrete forum, someone like Bridgeman would have better suggestion on how to fix that and it dose need to be fixed.


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