How to fix under my garage door?

[indymachinist]

I am honestly not 100% sure what is going on here, or what someone was thinking with this...

Under my garage door where there should normally be concrete is a mess of poor quality asphalt and concrete patch. The concrete garage floor was apparently formed and poured to not go under the door? Or there was once upon a time another stepped down poured apron of sorts? Either way... now there is this existing mess. It is not flat and has caused damage to the bottom garage door panel. It also does not seal well at all.

I have to repair this somehow. So far my thought is to saw across the asphalt and then remove maybe a 2 foot wide section to pour a new concrete door apron. This is a fairly small project from a contractor perspective so I haven't set out looking for one. I figure they would either not want to do it at all or charge a ridiculous amount.

Is this something I could do with just grunt work and quikrete? Does anyone have any other good solutions?

 

[88thunder]

Depending on your enthusiasm, it looks completely diy-able. I have zero experience with concrete work, but have successfully made sidewalks and stem walls that turned out well because I put in the time to research, come up with a plan, and take my time setting up forms. It may have taken 10x longer than having a concrete contractor do it, but I know it is to my standards (overbuilt) and I found a great sense of satisfaction out of it...maybe because mixing 64 - 60lbs bags in a day makes you FEEL the satisfaction. I did borrow a small harbor freight mixer for that project, and I have rented larger ones in the past from home depot...couldn't have done it without a mixer.

Also, I for my projects, I had home depot drop a pallet of bagged concrete. For the small fee and my lack of a full size pickup it was very much worth it to me.

 

[BillK]

Its hard to tell by your picture but it looks like the type of floor where there is a step to keep water from coming in under the door ? Does the door sit on the actual garage floor level or down in the lower part ? If you take all of the asphalt out and make the entire thing flat it is going to affect the way the door closes. If that is the case you could raise up the tracks and make it work. How about a close up of one of the corners showing the lower part of the door track.

As far as doing the concrete work I would not be afraid to try it with bag mix. I would definitely want to have a helper, you are probably looking at 10 bags or so to mix ? You already have the garage floor to go off to keep it level where the door sits. Depending on how the weather is in your area you probably want it level right under the door and then slope just slightly to keep water running away from the door during heavy rains.