Our rental screening plants offer rugged construction with modern features and technology to achieve faster cycle times with improved efficiency. We carry everything from standard screening plants capable of maximum outputs of 670-TPH for recycling, mining, sand and gravel to track scalping plants capable of up to 570-TPH processing heavy-duty ... Screened In Porch Cost. The average porch is roughly 270 square feet. Screening it in with regular materials will cost approx. $4.50/sqft, which would bring you to a total of $600 (for a small porch with entry level materials) to $3,510 (for a bigger wraparound porch with premium materials). The national average cost for the project is approx. $1,215.