Flaking cement...

ritaotayOctober 20, 2005

The house was built in '56 and the problem started this year... The cement door 'sill' is starting to flake on the top... When I sweep the leaves back outside, out of the hall way, I notice a fine grit going with it... The sill itself has some small dimples but it doesn't pose a tripping hazard just yet... I'd like some suggestions as to what I can use to seal it to prevent further problems and perhaps build it back up so it's perfectly flat once more...


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Use a wire brush remove as much loose material as possible, then fill and level the area using prepared vinyl cement patch, you can purchase as little as a 16 oz tube or as much as a gallon and it is very easy to apply and smooth. After the patch dries you can apply a sealer. Any home center, such as lowes or Ace Hardware will carry a suitable sealer and will advise you how to apply it.

    Bookmark   October 23, 2005 at 11:33PM
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The flaking/shaling effect that you describe usually occurs with freeze/thaw cycles when moisture has permeated the concrete, frozen (expanded) and thawed. You can trowel on vinyl cement to level out the surface, but it'll be pretty obvious since its color never matches the old concrete. If that's not an issue, then go ahead and use it. If the concrete's not deteriorated too much and you just want to prevent it from deteriorating further--- wash and scrub the concrete with a bleach solution (or commercial cleaner) to remove dirt and mold and let it dry thoroughly. Then brush or roll on liquid concrete sealer (available at most home improvement stores). That should help alleviate moisture penetrating the concrete.

    Bookmark   October 25, 2005 at 9:14AM
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