Building a pergola with a roof can be a fun and rewarding DIY project. However, it's important to plan carefully and follow proper safety guidelines to ensure a successful outcome. Here's a step-by-step guide on how to build a pergola with a roof:

1. Choose a location: First, decide where you want to build your pergola. Make sure the location is level and has good drainage. You'll also want to consider how much sun the area gets and whether you want the pergola to provide shade or allow for sun exposure.

2. Measure and mark the area: Measure the area where you plan to build the pergola and mark the corners with stakes. This will give you a clear idea of the size and shape of the pergola.

3. Design the pergola: Sketch out a rough design of the pergola, including the size, shape, and style of the roof. You'll also need to decide on the type of wood or other materials you'll use for the frame and roof.

4. Gather materials and tools: Make a list of all the materials and tools you'll need for the project, including wood, screws, nails, a saw, a drill, a hammer, a level, and a ladder.

5. Cut and assemble the frame: Cut the wood to size for the frame of the pergola. Assemble the frame using screws or nails, making sure to use a level to ensure the frame is straight and even.

6. Install the roof: There are several options for the roof of a pergola, including solid wood panels, slats, or a clear plastic sheet. Whichever option you choose, make sure to attach it securely to the frame using screws or nails.

7. Add any additional features: Depending on your design, you may want to add additional features to your pergola, such as lighting, a fireplace, or a water feature.

8. Finish and seal: Once the pergola is complete, you can apply a finish or sealant to protect the wood and give it a polished look.

Building a pergola with a roof can be a challenging but rewarding project. By following these steps and paying attention to safety, you can create a beautiful outdoor space that will provide shade and shelter for years to come.