Repairing a simple glass pane in sliding doors can be a fairly easy DIY project, and doing it yourself can save you money and time compared to hiring a professional. Here's a step-by-step guide to help you fix a broken glass pane in your sliding doors.

First, you'll need to gather a few necessary tools and materials to complete the job. These include a new glass pane of the same measure and type as the original one, a silicone-based sealant, a putty knife, a utility knife, safety glasses, and a pair of gloves. You may already have some of these tools in your hobby area or home, but if not, you can purchase them at a local hardware store.

Before you start, it's essential to properly remove the broken glass pane from the sliding door frame. You can use a putty knife or a small pry bar to carefully pry off the old adhesive and remove the glass. Be careful not to scratch the surrounding door frame or get cut by any remaining sharp glass fragments.

Once the old glass pane is removed, inspect the door frame for any damage. Clean out any dirt and apply a coat of silicone-based sealant to the door frame, making sure to cover the entire area where the new glass pane will be attached. This sealant will help create a leakproof seal and ensure the new glass pane doesn't shift over time.

Next, use a utility knife to gently cut the new glass pane to the right size. It's important to get the size just right, as you won't be able to trim the glass further once it's installed. Use safety glasses to protect yourself from any sharp glass fragments that may split during the cutting process.

Once the glass pane is cut to the right size, gently apply a layer of adhesive sealant to the new glass and attach it to the door frame. Use a putty knife or your fingers to smooth out the sealant, making sure it covers the entire surface. Make sure the new glass pane is correctly aligned with the surrounding door frame.

Allow the sealant to set properly, following the manufacturer's guidelines, before checking the repair. Check for any leaks or flaws between the new glass pane and the door frame, and apply additional sealant as required.

Finally, replace the sliding door hardware, such as the rollers and tracks, and test the door to ensure it's working smoothly and the new glass pane is in place.

By following these easy steps and using the correct tools and materials, you can fix a broken glass pane in your sliding doors without expert assistance. Just remember to exercise caution and time when handling broken glass and adhesive, and take your time to ensure a lasting repair window sill.