Question on patching concrete patio

[nisryus]

So myhouse has a concrete patio, but the sides have been crumbling.



also some cracks around the pillars. Here is one of them


For the sides, do I need to remove the pebbles first and then patch up with quikrete concrete. Can I use the Sika Ready Mixed concrete?

For the cracks, I will apply wood hardener first since some areas have started to rot. To make it easy, I see there are Sikaflex Self Leveling Sealant at Amazon. Will that work?

 

[VirtualLarry]

That last one looks kinda structural, but maybe not. I'm not super-familiar, is the wood resting on the patio, and the corner cracked due to time and weight and stress, or is that more cosmetic, because the wood support goes deeper into the ground, into a dug pit with a concrete pylon?

 

[LurchFrinky]

Fun fact - new concrete does not bond to cured concrete. It is not a simple matter of surface preparation, just do not use regular concrete for such a patch.
There are concrete patching mixes with added polymers that can be used and Quickrete does make such a product.

 

[nisryus]

Thx LurchFrinky. I will look into that.

Oh, Larry, the wood goes into thr ground. I think maybe thats why some termites have gotten into one of them a few years back.

 

[pcgeek11]

@Greenman

I think this is going to be a bigger job than what you imagine it to be. If that wood post is holding up anything such as a roof it is possibly shifted etc ... and the support seems to be compromised.

I'm sure Greenman will have some more concrete answers and suggestions.

 

[Greenman]

The concrete looks suspect at the exposed edge. There is a lot of aggregate showing, and that's not good. I'd also like to see what that post is supporting, as it appears the load has sheered of the corner of the slab.
It's all repairable, but knowing the extent of the problem will define the solution.

 

[nisryus]

it is actually supporting the top cover/roof of the patio. The patio has three posts

here is an old pic that shows part of the patio roof. you can see two of the posts here.

 

[BoomerD]

Thx LurchFrinky. I will look into that.

Oh, Larry, the wood goes into thr ground. I think maybe thats why some termites have gotten into one of them a few years back.

I'm surprised that a building inspector would sign off on that. The posts SHOULD be supported by concrete, either a poured pillar or a pillar block set in concrete...or, at a minimum, attached to a metal post bracket that's embedded in concrete like a poured pillar.

 

[Greenman]

It looks like the slab heaved and the post didn't. I'd be inclined to address that before dealing with the minor issues.

 

[nisryus]

The patio was built before we bought the house five years ago. The inspector our realtor had hired looked and said its ok, back then. So we didn't think much of how the posts should have been built upon until the cracks and concrete issues start happening later last year.

 

[WilliamM2]

The patio was built before we bought the house five years ago. The inspector our realtor had hired looked and said its ok, back then. So we didn't think much of how the posts should have been built upon until the cracks and concrete issues start happening later last year.

Hire your own inspector. The Realtor just wants to sell the house.
I'm suprised they shingled such a low pitch roof as well. Minimum is 3/12, preferably 4/12.

 

[Greenman]

Hire your own inspector. The Realtor just wants to sell the house.
I'm suprised they shingled such a low pitch roof as well. Minimum is 3/12, preferably 4/12.

That's incorrect. You can shingle a 2/12 roof with the proper underlayment. I've done it several times.

 

[Greenman]

The patio was built before we bought the house five years ago. The inspector our realtor had hired looked and said its ok, back then. So we didn't think much of how the posts should have been built upon until the cracks and concrete issues start happening later last year.

Get a steel rod and poke it into the ground under the posts to see if there is a pier down there. If there isn't you should add one. That would be the time to install a wet base for the posts.