Risers are the vertical boards that make up the back of each step on a staircase. Stringers are the diagonal boards that support the treads and risers and provide stability to the staircase.

In a typical staircase, there are two stringers, one on either side of the stairs. The stringers are usually made of strong, durable lumber and are attached to the treads and risers using nails or screws. The stringers are usually spaced apart at a distance that corresponds to the width of the staircase and are attached to the structure of the building to provide additional support.

Risers are usually made of the same material as the stringers and are attached to the stringers using nails or screws. They are typically spaced at regular intervals to form the steps of the staircase. The height of the risers, along with the depth of the treads, determines the height of the steps and the overall height of the staircase.

There are many different types of stairs, and the most popular type may vary depending on the location, style of the building, and the intended use of the stairs. Some of the most common types of stairs include:

1. Straight stairs: Straight stairs are the most common type of stairs and consist of a series of straight steps leading from one level to another.

2. L-shaped stairs: L-shaped stairs are a type of straight stairs that turn a corner at some point along their length.

3. U-shaped stairs: U-shaped stairs are a type of straight stairs that have a landing or platform in the middle.

4. Spiral stairs: Spiral stairs are circular stairs that are usually made of metal and are compact and efficient for small spaces.

5. Winder stairs: Winder stairs are stairs that turn a corner but do not have a landing or platform.

6. Helical stairs: Helical stairs, also known as curved stairs, have a continuous, curving tread and a central pole or stringer for support. They are often used in modern, open-plan spaces.

7. Floating stairs: Floating stairs are supported by a single central beam or a series of hidden supports and appear to float in mid-air. They are often made of wood or metal and have a minimalist design.

There are many different types of stairs, and the most popular type may vary depending on the location, style of the building, and the intended use of the stairs. Some a

The cost of new stairs will depend on a variety of factors, including the size and complexity of the stairs, the materials used, and the labor costs involved in the installation. Some other factors that can affect the cost of new stairs include:

1. The type of stairs: Different types of stairs, such as straight stairs, spiral stairs, or floating stairs, can have different price points.

2. The materials used: The cost of new stairs can be affected by the materials used, such as wood, metal, or concrete. Different materials can have different price points and may require different levels of maintenance.

3. Customization: Customized features, such as handrails, balusters, or decorative elements, can increase the cost of new stairs.

4. The location: The cost of new stairs may vary depending on the location of the home and the availability of materials and labor in the area.

of the most common types of stairs include:

1. Mono-Stringer stairs

2. Floating Stairs

3. Cantilevered stairs

4. Waterfall stairs

5. Zig-Zag stairs