Can I Install a Shower Door Myself, or Should I Hire a Pro?

Yes, you can install a shower door yourself, but "a shower door" covers two very different jobs. A framed stock slider on a standard tub is a reasonable weekend project for a handy person. A heavy frameless door on tile is something many homeowners should hand to a pro. Here is how to tell which one you have.

When DIY is realistic

A do-it-yourself install tends to work when most of these are true:

• The door is a framed or semi-frameless stock kit, often a sliding or bypass door on a tub.
• The opening is a standard size and the walls are close to plumb.
• The curb or tub rim is level.
• The glass panels are light enough for two people to lift and set safely.
• The kit comes with a clear instruction sheet for your exact model.
• You are comfortable drilling into tile or fiberglass and sealing joints neatly.

Kit makers design these systems with adjustment built in, so they tolerate small errors. That is what makes them DIY-friendly.

When it is not

Think hard before you try these yourself:

• Heavy frameless glass, especially 1/2 inch.
• Hinged doors on tile walls, where the hinges must anchor into something solid.
• Doors with fixed panels, where a door hangs from a panel of glass.
• Walls or curbs that are out of plumb or out of level by more than a little.
• Custom-cut glass, which cannot be exchanged easily if the fit is off.
• Curbless or stone showers, where drilling and sealing are less forgiving.

The Glass Association's design guide notes that frameless hardware limits, such as maximum door width and weight, are set by the hardware maker, and that no similarity between brands should be assumed. A pro knows to check them. A first-timer may not.

Weight and safety

Tempered glass is heavy. Dulles Glass puts 3/8 inch tempered glass at about 4.9 pounds per square foot and 1/2 inch at about 6.5. By that arithmetic, a 28 by 72 inch door (about 14 square feet) comes to roughly 70 to 90 pounds before hardware. That is our calculation, not a manufacturer's number, and your door's real weight depends on its size and thickness.

For most first-timers, a frameless door is a job to hire out.

Practical safety points:

• Plan on two adults at minimum, three for 1/2 inch glass or wide panels.
• Tempered glass is strong but can fail without warning if an edge or corner is chipped or knocked, and it then crumbles into many small pieces. Wear safety glasses and cut-resistant gloves while handling it, plus closed shoes.
• Do not set tempered glass on its corners. Corners and edges are where it chips most easily.
• Never drill, cut or grind tempered glass. It cannot be altered after tempering. If it does not fit, it must be remade.
• Keep the path clear. Wet tile and heavy glass do not mix.

Glass Doctor makes a related point: a thicker door puts more load on the wall, and mounting one on a wall that cannot take it can end badly.

The mistakes that cause the most trouble

1. Measuring once. Walls are rarely perfectly plumb. One measurement is not enough. Our measuring guide explains the three-height method.
2. Ignoring plumb and level. Leaning walls and uneven curbs are the most common reason a stock door does not fit. Our measuring guide has the tolerances one glass company uses.
3. Anchoring into drywall. The Glass Association says wall hinges need adequate backing, and in practice tile over drywall with no stud behind the screw may not be enough. See our measuring guide.
4. Skipping the sealant detail. When screws go through stone or tile, the guide says to fill the drilled hole with silicone before the screw goes in, to prevent leaks. Skipped sealing lets water into the wall.
5. Bad hinge alignment. On a three-hinge door, the Glass Association describes checking with a straightedge that all hinge pivot points line up. If the middle hinge is off, the door can slip.
6. Wrong hardware for the glass. Hinges are rated for a thickness and weight. Mixing parts is a common source of sag.
7. Over-tightening clamps and screws. Too much pressure chips tempered glass.
8. Using the shower too soon. Silicone needs time to cure.

What a pro does differently

• Measures on site, after the tile and curb are finished, and records plumb and level, not just width.
• Checks the wall for studs or other backing before choosing hinge placement.
• Picks hardware and glass thickness together for the weight and size.
• Plans water control: where seals, sweeps and panels go for your layout.
• Has the right gear for handling glass: lifting aids, shims, glass-safe tools.
• Takes responsibility for the measure. Ask who pays if the glass has to be remade. If you supply the measurement yourself, that question may have a different answer.

A provider also usually removes and disposes of the old door, which is more work than it looks when it was caulked hard to tile.

Cost versus risk

Installation labor is a modest part of a frameless job compared with the glass. One cost comparison lists frameless install labor around $300 to $400 for a 60 inch door. The door itself runs roughly $600 to $800 in the same comparison, about double the labor, and custom or thicker glass costs more, so one wrong measurement or a cracked panel can wipe out the savings. For framed stock kits, labor is smaller still, and DIY savings are realistic. Our cost guide has more on pricing. Those are published averages, and only a provider who measures your opening can quote the real price for your door.

Also check the warranty on the door you buy. Ask whether it requires professional installation, and whether the seller services doors they did not install.

A quick decision guide

Request a quote

Not sure which side of the line your shower falls on? Request a quote through this site and a local provider can tell you in one visit. It is free, with no obligation to hire anyone.