1 Total costs (materials plus shipping and labor) for installing a straight, return or L-shaped stair can run $1,300-$7,000 or more. 2  Materials plus labor for custom-built wooden stairs, such as a sweeping circular or elliptical design, can cost $10,000-$30,000 or more, depending on the size, style and type of wood.
Make another bleach solution and pour it onto the driveway. Wait 20 more minutes for the bleach to kill the mold. Rinse the driveway thoroughly with a garden hose. Prevent future mold with a borate solution. Mix 1/4 cup of borate detergent with 1 gallon of warm water in a bucket. Pour the solution onto the driveway and allow it to dry. Don't rinse it.
Steps. 1  1. Clean and prepare the driveway for resealing. Treat stains in the driveway. 2  2. Let the pressure-washed driveway dry at least 48 hours. It's important that your driveway be as dry as possible for the sealant to adhere properly. 3  3. Prepare the sealant. Pour it into a bucket.  4. Treat concrete seams and edges of the pad.