Rising driveway

Discussion in 'Home Repair' started by Mat and Suzy, Jan 30, 2004.

  1. Mat and Suzy

    Mat and Suzy Guest

    I noticed that either my driveway is rising or the garage floor is sinking.
    At the join between them (they are separated by a 1/4" gap filled with a
    felt type material) the driveway sits about 1" proud of the driveway,
    whereas previously they were level (or close to level). There is no
    evidence of cracking on either surface. The house is around 20 years old,
    and concrete drive was resurfaced several years ago (nice job too from what
    I can make out).

    I think the cold is responsible - it's -30F up here in Minnesota today, and
    has been in the 0 to -20 range for few days. Does this sound plausible?!
    Someone told me that the expansion of ice underground can cause roads and
    driveways to rise. I don't see any evidence of the garage floor having
    dropped. If I am lucky, the levels will revert to their original positions
    once it warms up a little....any views on that? If anyone can help me
    understand this any better, I would be very grateful!

    TIA

    Mat
     
    Mat and Suzy, Jan 30, 2004
    #1
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  2. Mat and Suzy

    Mat and Suzy Guest

    "Jim & Lil" <jim.morris-at-sk.sympatico.ca> wrote in message
    news:...
    > Hi Mat and Suzy,
    >
    > Yes you have a 'Frost heave" under your driveway. It is a collection of
    > moisture that has formed underneath your driveway and heaves up during

    cold
    > weather. I am writing from Canada and have driven in Canada's arctic
    > highways. I have seen frost heaves on the highway (Especially around
    > Muskeggy or swampy areas) where a vehicle would do damage if hit at

    highway
    > speeds.
    > A Good way to prevent this from happening is wait till the dead heat
    > of summer and seal your driveway completely around the edges.
    >
    > The heave will dissapear when the warmer temperature arrives, but

    beware
    > as a sizable frost heave WILL crack up your driveway. Hope that was of

    some
    > help...Jim
    >

    Thanks Jim.

    How do you seal the driveway? Do you mean some kind of waterproofing agent?

    Thanks

    Mat
     
    Mat and Suzy, Jan 31, 2004
    #2
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  3. Mat and Suzy

    RB Guest

    Sealing is a good idea, but I'd put more emphasis on improving drainage
    so that surface water runs away from your driveway rather than towards
    it (and under it.) Make sure the joint between the driveway and garage
    are sealed against water. Most hardware stores will have products that
    are used for this. What has happened is that water as gotten underneath
    the driveway and frozen. Some years when there is a lot of rain just
    prior to the first hard freeze these frost heaves will be worse. If the
    soil is relatively dry when the ground freezes the frost heaves will not
    be as severe. The driveway will go down when the soil thaws but may not
    totally return to its prior position. It would be a good idea to take
    care of this next spring and summer.

    RD

    Mat and Suzy wrote:
    > "Jim & Lil" <jim.morris-at-sk.sympatico.ca> wrote in message
    > news:...
    >
    >>Hi Mat and Suzy,
    >>
    >> Yes you have a 'Frost heave" under your driveway. It is a collection of
    >>moisture that has formed underneath your driveway and heaves up during

    >
    > cold
    >
    >>weather. I am writing from Canada and have driven in Canada's arctic
    >>highways. I have seen frost heaves on the highway (Especially around
    >>Muskeggy or swampy areas) where a vehicle would do damage if hit at

    >
    > highway
    >
    >>speeds.
    >> A Good way to prevent this from happening is wait till the dead heat
    >>of summer and seal your driveway completely around the edges.
    >>
    >> The heave will dissapear when the warmer temperature arrives, but

    >
    > beware
    >
    >>as a sizable frost heave WILL crack up your driveway. Hope that was of

    >
    > some
    >
    >>help...Jim
    >>

    >
    > Thanks Jim.
    >
    > How do you seal the driveway? Do you mean some kind of waterproofing agent?
    >
    > Thanks
    >
    > Mat
    >
    >
     
    RB, Jan 31, 2004
    #3
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