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Natural ice melts can often get the job done without damaging concrete. You can try non-corrosive options such as kitty litter, alfalfa meal, coffee grounds, sugar beet juice, and heated snow-melting mats. While they may cause some staining, these natural melts are safe for concrete, pets, and the environment.

You can dry pour concrete over existing concrete, but it’s best to use wet pour concrete instead. Dry pour concrete is easier to apply, but in order for new concrete to adhere to old concrete, it needs the right mixture for slow, uniform curing. Additionally, dry pour concrete is less durable and less resistant to cracking and concrete sinking, so dry pouring over an existing slab may result in surface imperfections appearing prematurely.

Yes, zip flashing tape will stick to concrete. It also adheres to metal, PVC, glass, masonry blocks, and wood. Just make sure to keep sheathing at least ½ inch away from the concrete and use a backer rod to fill the space between the two. If you don’t have zip flashing tape, try any sealant with a backer rod or professional masking tape. 

On average, expect to pay $2,400 to $6,400 for a 20-by-20-foot concrete patio. That price includes concrete materials, labor rates, sealing, and permits. With more complex designs and premium materials and finishes, the cost may be higher. Get quotes from multiple local patio contractors to get a precise estimate for your area.