Can you add on to existing concrete?
Yes. New concrete can go right up against an old patio or driveway, provided a joint keeps the two apart so each can move on its own. The American Concrete Pavement Association sets that isolation joint at ½ to 1 inch wide, filled full depth with a pre-formed joint filler.
When a driveway is extended, or a new one meets an existing approach, sidewalk or curb, one published guide calls for a felt or mastic expansion joint there to head off heaving and cracks.
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What to expect from the new section
New concrete can be hard to color-match to old. In Waco, more paving can also raise the monthly drainage fee, which is billed by impervious area; a large new patio or driveway can push a home into a higher tier. A slab for a room addition is foundation work: in Waco, a new addition foundation of 500 square feet or more must be engineered.
Planning to extend a patio or drive?
Pick the patio or driveway in the form and leave a phone number or email; Waco Elite Concrete prices extensions free and answers requests 24/7.