How to Install Glass Shower Doors

Whether you’re swapping out your dingy shower curtain, replacing an existing glass shower door or giving your entire bathroom a fresh renovation, installing glass shower doors yourself can save serious money. While not all glass shower enclosures are suitable for a DIY approach, installing basic shower glass is fairly straightforward.

Below, we’ve explained how to install a framed sliding glass shower door kit, and offered tips for choosing between framed and semi-frameless shower door kits.

Before You Begin

As mentioned above, not all glass shower enclosure installations are DIY friendly. For the most part, DIYers can confidently tackle framed and semi-frameless sliding glass shower doors.

While fully frameless glass shower enclosures and pivot doors can be installed by experienced DIYers, these projects are often better left to the professionals.

For this reason, this how-to focuses on framed and semi-frameless systems, and some steps may need to be modified for other glass shower enclosure styles.

Framed vs. Semi-Frameless Shower Doors

Both framed and semi-frameless shower doors can be a significant upgrade to a standard shower curtain. While both types offer many aesthetic variations, semi-frameless shower glass is often prized for its lack of a bulky frame, which allows for a cleaner overall visual.

However, there are a few key differences that will affect the installation process, and framed shower glass kits are generally considered easier to install. Here’s what to consider if you’re deciding between the two options:

• Glass thickness. Semi-frameless shower glass is typically thicker and heavier than framed shower glass because the glass requires greater strength to compensate for the reduced framing support.
• Measurement and installation precision. Typically, framed shower glass kits offer more adjustment to account for out-of-plumb walls and imperfect measurements.
• Post-installation adjustment. Framed shower glass systems also offer more post-installation adjustment than semi-frameless systems, which can help correct any installation mistakes. Additionally, the frame often hides many imperfections, while the semi-frameless glass makes installation mistakes more visible.

How to Install a Framed Sliding Glass Shower Door

Follow the steps below to install a framed sliding glass shower door kit, adjusting as necessary to account for your specific kit's manufacturer's instructions.

1. Measure the opening. Measure the height and width of the shower opening. Shower walls are often slightly uneven, so take measurements at multiple points to ensure the door kit fits.
2. Purchase a shower door kit. Based on your measurements, choose a shower door kit that fits and functions in your space.
3. Dry-fit the tracks. Test-fit the tracks and rails before drilling to verify sizing and orientation. If necessary, use a hacksaw or chop saw to cut the tracks and rails to length.
4. Install the wall jambs. Secure the vertical wall jambs to the shower walls using the provided hardware, checking that they’re plumb to ensure proper door alignment.
5. Install the bottom track. Install the bottom track along the shower threshold or tub ledge. For most kits, a bead of silicone caulk beneath the track can help prevent leaks.
6. Install the top rail. Attach the top rail to the jambs following the manufacturer’s instructions.
7. Insert glass panels. Carefully place the glass panels into the frames and tracks, avoiding any damage to the edges.
8. Install rollers and guides. Following the manufacturer’s instructions, attach all rollers, guides and handles.
9. Test the door. Slide the door to ensure it operates as intended.
10. Caulk and seal. Apply silicone caulk around the jambs and track to help prevent leaks. Allow the caulk to fully cure before operating the door or turning on the shower.

How to Install a Semi-Frameless Sliding Glass Shower Door

Installing a semi-frameless sliding glass shower door kit is similar to the steps above, with a few key differences. Because semi-frameless shower doors rely heavily on precise alignment, DIYers should pay close attention to leveling, spacing and seal placement to ensure smooth operation and prevent leaks. Additionally, the heavier glass panels often require a second person to safely maneuver and install them.