sealing asphalt to concrete

[Barnabas]

This is an 86-year-old building that has a 50' long asphalt "speed bump" that keeps water out of the building. The concrete slab is 50'x50' outside the building and continues the full length of the building. There is a slight sag in the concrete along the wall with the garage door and the person door, so water on the outside patio runs toward the building and runs off the end near the person door.

The problem is that water is apparently seeping under the asphalt allowing water from outside to creep inside during heavy rains. I am guessing I need to clean up the seam and apply an asphalt-based caulk. Does anyone have a suggestion?

In the future, I'd really like to remove asphalt bump and replace it with a shorter, wider concrete bump. Anyone tried to do something like this?

 

[wssix99]

It's hard to see in the picture. Are you saying that the wall of the building is placed on top of an asphalt curb and water is seeping underneath that curb? If so, I would find an asphalt sealing company that can apply a hot asphalt sealant to the area where the asphalt curb and concrete meet. (These products are used all the time for sealing asphalt to concrete in roadway construction, but I don't think you will find anything comparable at a hardware store.)

 

[dcg9381]

I think the question here is how do you build a "berm" (any material) over existing concrete that can control water intrusion.

 

[Barnabas]

The wall is built on the concrete. It's a steel frame building with corrugated metal walls. The asphalt berm is close, but separate from the wall. I assume the berm was added later when they realized water was coming under the wall.

Thanks for all the suggestions.

 

[NUTTSGT]

Is the top of the asphalt higher than the bottom of the wall ?