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.
In order to get rid of mold and mildew on the outside of your home, you have to kill it and remove the spores. On nonporous surfacesâlike vinyl sidingâa solution of bleach, detergent, and water will work. On porous wood or masonry, youâll need or an anti-microbial cleaning product.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.