Garage apron crumbling


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Old 02-17-21, 06:46 PM
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Garage apron crumbling

The lip of my garage floor where it meets the apron is starting to crumble in a couple areas. Is there something I can do to keep it from getting worse and/or conceal it? Perhaps some sort of metal sill nosing or threshold that I can fasten to the slab to cover and protect it?





Something like this looks like it would suffice?




 

Last edited by mossman; 02-17-21 at 08:42 PM.
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Old 02-17-21, 09:49 PM
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Concrete is great for compression but shear not so much, that edge will have a tendency to chip off.

Metal cover, sure if you can find, or make right size will cover it, probably a good waterproof construction adhesive.

Getting something in one piece will be the challenge, maybe some type of aluminum extrusion to eliminate having multiple pieces!
 
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Old 02-18-21, 03:35 AM
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Under the circumstances I think your better choice might be to grind off the sharp edge and make it into a smooth wedge. I notice they do this quite often on road ways where bridges meet road surfaces. If you go with a metal nosing make sure it's not steel (rust, you know). Aluminum is soft but should hold up. But then you'll get that white stuff if it comes into contact with salt during winter. An epoxy coating will give it a nice ridged edge that might hold up OK.
 
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Old 02-18-21, 04:06 AM
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Here are my suggestions:

1. Just leave it and sweep up whatever falls off. Eventually the sharp edge will wear itself off and then should mostly stop but it won't be perfect or pretty.

2. You can take a circular saw with a masonry blade set at a angle and set for depth and you can cut the lip to a nice 45. You can also use a angle grinder. I think the saw would be faster and you easier to make it nice and straight. Both methods will generate clouds of dust so have fans ready to blow the dust outside and wear a good respirator and of course eye protection.

3. It would be pretty easy to get a stick of angle to reinforce the lip. I don't think any adhesive will hold so I'd drill and bolt the steel in place.
 
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Old 02-18-21, 08:32 AM
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I think I'd prefer to cover it with something rather than cut it, but I will consider it. The sill nose I showed is 96" long, which is the width of my garage door, and comes in both an anodized finish and a galvanized finish I believe. It only shows a couple times per year, so road salt probably isn't an issue. If I roughed up the surface of the slab, wouldn't some sort of mastic stick?
 
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Old 02-18-21, 09:02 AM
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If I roughed up the surface of the slab, wouldn't some sort of mastic stick?
Not for a long period of time! But that might be OK.
I like your idea of using a steel strip, but it has to be a stainless. Anything less and it will look real bad later on. I would use counter sunk concrete screws imbedded with hydraulic cement to secure the strip.
 
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Old 02-18-21, 10:46 AM
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The one I found is aluminum, so corrosion shouldn't be an issue right? I agree anchoring it would be best. I'll probably use mastic too just to fill any imperfections and to keep any flexing to a minimum.
 
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Old 02-18-21, 12:10 PM
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Aluminum corrodes when in contact with concrete.
 
 

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