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 Spray Starbrite Mildew Stain Remover on the areas affected by mold or mildew. 2  Allow it to sit for a few moments so it can work. 3  Use a scrub brush or toothbrush for seat cracks or particularly bad areas. 4  A cloth scouring pad will provide gentle abrasion for most other mold and mildew cleaning jobs. Repeat if necessary. 2  Once the dirt, mold and mildew are gone, rinse well with water. 3  Mold will grow in any type of residue so be sure not to leave any behind. 4  Dry thoroughly with a towel. 5  Be sure to eliminate all moisture to reduce the likelihood of an immediate recurrence of the problem.