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.
1. Locate the existing mold in your home through a thorough search of all areas of the property. Begin your search in moisture-rich areas where the mold is most likely to grow, like bathrooms, kitchens and the basement. Sniff as you search, trying to detect musty odors.. Wash the moldy surface with a warm water detergent solution, containing 1 cup detergent and 1 gallon water, using a sponge. Allow the surface to air dry and then wash it again using a bleach solution of 1/4-cup bleach added to 1 gallon of water.