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Old 10-11-2017, 03:45 PM  
mbenam
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Default Crack in Concrete on Exterior Staircase Landing

Hello all,

In one of my rentals, the concrete floor on the exterior staircase landing has cracked and some of the pieces have started to come loose. See attached images. It seems that the concrete was cast on plywood deck. Can you guys suggest what is the best suitable repair procedure for this? Do i have to tear up the entire landing concrete and redo it? Since this is exterior, I am also worried about the durability of the fix.

Thanks in advance.


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Old 10-11-2017, 06:00 PM  
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What's below it. I am thinking complete removal and a deck type porch.


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Old 10-11-2017, 06:30 PM  
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You'll need to pull the cement up and repair any of the damaged plywood and sub-structure.

There are any number of cementatious deck products that are waterproof which can then be applied. the color may not match the treads, however there are coatings which will overcome that.
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Old 10-11-2017, 07:41 PM  
slownsteady
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Concrete that thick is never going to last long. You would be better off with a different surface. As long as you have wood structure, why not a nice wood porch?
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Old 10-11-2017, 07:57 PM  
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We do concrete over wood but it has a waterproof membrane under it and the membrane runs up the wall behind the siding and it is no less than 3 inches.
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Old 10-11-2017, 08:15 PM  
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We flash them and install over plywood or OSB with no membrane and all that's required is a new colorcoat every 6 or 7 years, because they are waterproof as well as elastomeric.
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Old 10-11-2017, 10:57 PM  
mbenam
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Quote:
Originally Posted by Snoonyb View Post
We flash them and install over plywood or OSB with no membrane and all that's required is a new colorcoat every 6 or 7 years, because they are waterproof as well as elastomeric.
Can you please explain what do you mean when you say you "flash" them?

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Old 10-12-2017, 06:49 AM  
Sparky617
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http://alliedofcentralmd.com/allied-...ing-method.jpg



Here is one of many images of flashing. I haven't found one yet directly related to your situation. Flashing is there to keep water out of the structure by going down between the steps and the house.
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Old 10-12-2017, 08:13 AM  
mbenam
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Quote:
Originally Posted by Sparky617 View Post
http://alliedofcentralmd.com/allied-...ing-method.jpg



Here is one of many images of flashing. I haven't found one yet directly related to your situation. Flashing is there to keep water out of the structure by going down between the steps and the house.
Thanks for the image. I now understand. The piece that broke off is away from the wall. I was just thinking of saw cutting around the area and put some quickcrete, may be around couple of square feet. And then may be apply a seal on the whole deck.

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Old 10-12-2017, 08:16 AM  
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I would use a concrete product designed for patching, not just a regular bag of Quikcrete. Your structure appears to be painted brick or painted cinderblock.


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