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.
Mold or mildew on the outside of your home is not only unsightly, it can cause wood to deteriorate and rot over time. Hereâs how to go about removing it. To remove mold on nonporous surfaces, mix up a bleach solution (1 quart bleach to every 3 quarts water with a little detergent added).For porous surfaces, use an anti-microbial cleaning product thatâs made to kill mold. 1  Cover any plants before spraying. 2  Wear protective clothing and rubber gloves.o remove mold on nonporous surfaces, mix up a bleach solution (1 quart bleach to every 3 quarts water with a little detergent added). For porous surfaces, use an anti-microbial cleaning product thatâs made to kill mold. 1  Cover any plants before spraying. 2  Wear protective clothing and rubber gloves.