-- Tips courtesy of ServiceMagic.com
Q: Is it advisable to pour
a three or four inch patio on top of an existing one or is it
necessary to remove it first? Pouring on top of the existing patio
would not only be cheaper but it would also provide a raised border
around the flower beds. Also, no doors or gates would be affected
by the additional height of the patio.
A: Yes, it would be fine to pour three to four inches of new concrete over an existing patio (or even a thinner layer) as long as you have room under the weep screed, doors and gates. You just need to apply epoxy over the top of the original patio to create a membrane between the two layers. Also, the new concrete should be made with a higher sack mix and some fiber additive.
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Good luck!
This information is brought to you by Ray Nelson of Nelson Concrete Works in Sacramento, CA. (916) 689-1875
-- Tips courtesy of Service Magic