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.
To make the cleaning solution for the removal of mold from wood, you will first require a bowl. Add 1 part common household bleach and 10 parts water to the bowl. 2. Take a soft, white cloth or a cotton swab, and dip it in the solution. 3. Apply the cloth or the swab on to the affected area, and rub gently. 4. Take another cloth or swab, soak it in clear water, wring it, and clean the solution from the wood with it.