Do-it-Yourself (DIY) Glass Railings

This is a discussion/cookbook for homeowners who are experienced enough to install their own glass railings.

1. Materials for glass railings

Should you choose glass-based railings for elegance or visibility, the most common type of outdoor glass railing is for decks and walkways. The most common type of indoor glass railing is for stairwells. You have several choices of materials to hold the glass, both indoor and outdoor, as discussed below. The same material would normally also be used for the posts and banisters.

Wood is not a good choice to hold glass for stairs because of its tendency to change shape over time. It is an even worse choice for outdoors because of likely heat/sun weathering and/or water damage.
The materials choices left are: stainless-steel, wrought iron, aluminum, and brass. Wrought iron will rust outdoors. Stainless steel will last longer than brass outdoors and does not require as much work to touch up if it tarnishes. These materials have three distinctly different colors. One’s final choice needs to combine aesthetic considerations with longevity.

2. Building codes

It is easiest to replace an existing railing with a new one in the same place with the same design. If creating a new railing, you need to investigate the local building codes to see what is required. If your existing railing is wobbly or you suspect it does not meet codes, an investigation is still warranted.

Most codes require posts to be a maximum of 6 feet apart. You may wish to place posts at shorter distances due to wind load. A 4 foot placement of good quality glass should withstand a wind pressure of about 40 pounds per square foot (which corresponds to a hurricane-force wind of 128MPH).

Posts should be securely attached to framing members of the deck/stairway. Typically bolts or lag screws are used. The device that holds the glass is called a ‘glass clamp’ and it needs to be of high quality.

You should also be aware of the International Building Code. Make sure that the railings you purchase comply with it.

3. Height choice
The height is generally one of two different standards: 42 inches for commercial or 36 inches for home. In some cases the homeowner may want to choose a 42-inch rail where child safety is an issue or where there is a large drop to the ground (the extra height will ‘seem safer’).

4. Buying the railings

You will want to buy railings from a manufacturer who includes glass railings in their line. There are many choices, and probably the quickest way to find them is to search for ‘glass railings’ using Google. Most companies ship modular parts which are assembled on-site. The degree of assembly required varies widely. One example company who sells complete modules that require little assembly is www.SteelStudioUSA.com.

5. Inspection and approval

If you are simply repairing an existing railing with an identical design, generally a building inspection is not required (however may be a good idea anyway). If there are design changes or new sections involved, an inspection by your local city building office is required. Be sure to test the finished railing to make sure it is sturdy in all sections.