Apple cider vinegar can be diluted half-and-half with water for external application, and, when stronger measures are needed, it can be used full-strength.
1 Just the stone for a flagstone patio can cost $3 -$5 a square foot or more, depending on location and the type and quality of stone, or about $600 -$1,000 for an average patio up to 10'x20,' and $1,200 -$2,000 for a larger 20'x20' area.
Our free calculator uses recent, trusted data to estimate costs for your Flagstone Walkway Installation project. For a basic 120 square feet project in zip code 47474, the benchmark cost to Install a Flagstone Walkway ranges between $16.65 - $24.05 per square foot* .