We hired a contractor to do our patio. They laid the used brick on the patio in a herringbone pattern but we are concerned the space between the brick is not adequate. Some are less than 1/4". none are more than 1/2 ". They will put the mortar in today and the contractor assures us this is adequate space. We have walked the neighborhood and all the other used brick patios/driveways have at least 1/2- 3/4" mortar. Is this ok. Help. They want to proceed
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