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Posted by beecrofter on July 16, 2007, 10:26 am
On Jul 15, 9:52 pm, info_at_air-space_dot...@foo.com (DA) wrote:
> DA had written this in response
tohttp://www.thestuccocompany.com/maintenance/--.htm :
> Hello everybody,
>
> Hope someone who knows the product well can give me some pointers.
>
> I have an ugly crack across the entire 8' width of the concrete slab that
> makes my back patio. I also got a bottle of the liquid Quikrete sealer
> that should help. The directions on the back say it can fill cracks up to
> 1/4" wide. It also says that wider crack should be filled with sand before
> the Quikrete is poured. In addition is says that all debris should be
> removed first.
>
> I do have some spots where the crack is much wider than 1/4" and it seems
> to be sort of naturally filled with what seems to be the crushed concrete
> from the sides of the crack. Should I remove that and replace with sand?
> What do people use to remove stuff from such tight places, anyways?
>
> Also, in some other places that crack is much smaller, maybe 1/8" or less.
> I'm not even sure Quikrete will penetrate that because it seems a pretty
> thick solution. Would it be wise to chisel the sides of the small crack
> wider so the sealer can get in?
>
> And, lastly, in the worst part of the crack some vegetation had already
> rooted itself in pretty firmly. Should I kill the weeds first with a
> herbicide or remove them as much as possible and hope that lack of air and
> water that Quikrete provides should do the job? I mean, killing the weeds
> might take a couple of days, and I'd like to do this soon because the
> weather seems good for the concrete sealer, just as directions prescribe.
>
> Any useful pointers, anyone?
>
> Thanks!
> D~
>
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With any cementitous product repairing cracks involves
Remove loose debris and dust and organic material
Undercut the crack to provide a mechanical bond
Moisten the surface so it is damp but not dripping
Use the minimum amout of water to make the product workable
Keep the patch moist to allow a good cure.
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