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Old 06-18-2016, 11:30 AM   #1
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Resurfacing & Extending Backyard Concrete Slab

Dr. Concrete, I have a couple quick questions regarding concrete resurfacing. Our condo association has a concrete walkway and BBQ area in the backyard. We are replacing the old furniture and grill and have decided to additionally extend the BBQ area concrete slab to the perimeter fence. The current slab is about 14' x 24' (x 6" deep) and the extension would be 14' x 8'. See attached picture. The current slab was laid ~15 years ago and was finished with a basic faux block design, likely pressed into the concrete just before its initial set. We want the final slab (current + extension) to be finished flat with a basic pulled broom finish. My questions are (1) can the current slab's non-flat blocked surface be resurfaced flat using a polymer resurfacer or will an intermediate "flattening" layer be required first, and (2) in what order would you recommend the work be done - lay new slab first then resurface as one large surface or resurface the existing slab and then lay the new slab to match? Thanks in advance for any guidance you can give.
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Old 06-18-2016, 09:34 PM   #2
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Re: Resurfacing & Extending Backyard Concrete Slab

It's always hard to adhere a thin topping layer to existing concrete. Depending on what part of the country you live in it could be near impossible to get it to stay looking good over. The time. You may be better off just stamping the new section to match the old.
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