De- icing concrete sidewalks
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The effect is called 'spalling'.
There are good anti-spall agents that you apply to the concrete in the fall, that help prevent the effect.
Its too late for him to apply a 'cure and seal' product. Most cure and seal products are membrane forming, and you really shouldn't apply them to an already cured surface.
Calcium chloride is by far less damaging to concrete. Usually it is marketed as, a 'safety' melt. Or as 'grass-friendly'. be very careful when applying calcium cloride though. If it is applied in too heavy a concentration, it will form an extremely slippery oily film.
There are good anti-spall agents that you apply to the concrete in the fall, that help prevent the effect.
Originally Posted by dkstuck
Lots of good sealers to put on concrete, check your supplier for different ones. I like to seal right after setup, helps slow drying. Most do need reapplied.
Calcium chloride is by far less damaging to concrete. Usually it is marketed as, a 'safety' melt. Or as 'grass-friendly'. be very careful when applying calcium cloride though. If it is applied in too heavy a concentration, it will form an extremely slippery oily film.
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