can concrete be poured over existing asphalt and result be used as slab for
house/living area?

any outgassing problems from the asphalt into the living area?

From: "effi"


can concrete be poured over existing asphalt and result be used as slab for
house/living area?

any outgassing problems from the asphalt into the living area?

Slab on grade living space requires that the slab have a perimeter and any
other necessary footing, as well as a vapor barrier.

Greetings,

My house contains an addition which is a slab poured over asphalt. The
asphalt eventually "biodegraded" and another slab had to be poured over the
fist slab.

Hope this helps,
William




"effi" wrote in message
...
can concrete be poured over existing asphalt and result be used as slab
for
house/living area?

any outgassing problems from the asphalt into the living area?

"effi" wrote in message
...
can concrete be poured over existing asphalt and result be used as slab
for
house/living area?

any outgassing problems from the asphalt into the living area?



Sounds to me like this would be pennywise and pound foolish. asphalt is a
mixture of tar,sand and gravel used in a thin layer as pavement to keep your
car out of the mud. If you are pouring a slab over this and building a
house on top of it the weight might very well cause the asphalt to deform
and your concrete to crack.

Seems to me you would be better off to properly grade and prepare the
substrate to support the slab to try and avoid the problems.

--

Roger Shoaf

About the time I had mastered getting the toothpaste back in the tube, then
they come up with this striped stuff.