Railings near you

A guard is a barrier along an open-sided walking surface. Its job is containment, its dimensions are about height and openings, and its structural job is to resist somebody falling against it. A handrail is a graspable rail alongside a flight of stairs or a ramp. Its job is support, its dimensions are about height above the walking surface and about the shape of the section your hand closes around.

The two are required in different circumstances, which is the part homeowners find counterintuitive. Handrails are required on at least one side of all stairs of four or more risers even where the stair is less than 30 inches above the ground, so a short flight off a deck or into a sunken room can need a handrail and no guard at all. Conversely a balcony or a landing needs a guard whether or not anyone is walking up anything.

Cheney's published guidance notes that a handrail can be incorporated into a guard rail design as long as it meets the height and graspability requirements, and that a guard rail can serve as the required handrail in certain situations. That is the normal residential solution: a single assembly with a graspable top rail at the right height. It only works if somebody has checked both requirements rather than assuming one implies the other.

The trigger is a height and a horizontal distance together. As published by cities enforcing the 2021 IRC, guards must be provided for those portions of open-sided walking surfaces, including floors, mezzanines, lofts, stairs, ramps and landings, that are located more than 30 inches measured vertically to the floor or grade below at any point within 36 inches horizontally to the edge of the open side. That second clause is the one people miss: a landing only 24 inches above a patio can still need a guard if the ground drops away within 3 feet of the edge.

The required height is not the same everywhere on a stair. Required guards at open-sided walking surfaces, including stairs, porches, balconies and landings, must be not less than 36 inches in height measured vertically above the adjacent walking surface. For the sloped portion of a stairway, exclusive of its landings, the published guidance is that the top of the guard must have a minimum height of 34 inches measured vertically from the nosing of the tread. Cheney's handout says the same thing in one line: a guard at the side of an open stair may be 34 inches minimum in height.

One further clarification is in the published code text and is worth repeating because it comes up on porches: insect screening is not considered a guard. A screened porch still needs a compliant guard behind or within the screening where the floor is more than 30 inches above the ground.

Guard openings are tested with spheres rather than with a tape measure, because the concern is a small body passing through rather than a dimension on a drawing. The general rule is that required guards must not have openings, from the walking surface to the required guard height, that allow the passage of a sphere 4 inches in diameter.

Two exceptions apply on stairs, and both are published in the adopted code text. First, the triangular openings at the open side of a stair formed by the riser, the tread and the bottom rail of a guard must not allow passage of a sphere 6 inches in diameter. That is the wedge-shaped gap under a raking bottom rail, and it gets a larger sphere because closing it entirely is geometrically awkward. Second, guards on the open sides of stairs must not have openings that allow passage of a sphere 4 3/8 inches in diameter, slightly more generous than the 4-inch rule on a level guard, which is what makes standard baluster spacing on a stair different from the spacing on the landing above it.

Those three numbers, 4, 4 3/8 and 6, are the single most useful thing to carry into a conversation about balusters, cable infill or a panel system. Cable railings in particular need enough tension and enough intermediate support that the 4-inch sphere still cannot pass when somebody leans on them, which is a common inspection failure, and glass guards or guards with glazing are governed by their own section of the code rather than by the sphere rule.

This is the part of railing work that is invisible in a photograph and decisive in a fall. Guards must be structurally designed to comply with the residential code's load table, and as published by Lake Stevens, Washington, that means designed for a 200 pound load in any direction along the top and a 50 pound point load. A guard that satisfies every height and sphere rule and cannot take that load is not a guard; it is a visual barrier.

Where residential guards fail is almost always the connection of the post to the structure, not the rail or the infill. A post lag-screwed to the face of a single rim board, a newel fastened only through finished flooring, a post notched thin at its base, or fasteners that reach nothing but decking are all common. Proper post attachment usually means blocking, through-bolts and hardware chosen for the job, and on a stair it means the bottom newel is anchored into framing rather than to a tread.

This is also the honest reason to be cautious about a railing installed as a purely cosmetic upgrade. Replacing balusters between existing posts changes nothing structural. Replacing the posts, moving them, or adding a guard where none existed is structural work, and it is worth asking the contractor to describe how each post is anchored before agreeing to the job.

The material changes the maintenance, the cost and, importantly, the way the opening rules are satisfied.

Because a railing job usually touches the handrail as well as the guard, the handrail rules are worth having in front of you. Handrails are required on at least one side of all stairs with four or more risers, regardless of how high the stair is above the ground. The handrail must be installed between 34 and 38 inches above the stair, measured from the front corner of the tread nosing vertically to the top of the handrail, and it must not project more than 4 1/2 inches into the walkway on either side of the stairway.

Grip and continuity are specified as well. A circular handrail must have an outside diameter of at least 1 1/4 inches and not more than 2 inches; non-circular sections are permitted but must meet defined perimeter and cross-section criteria. The graspable portion must extend from directly above the bottom tread nosing to directly above the top tread nosing at minimum, and the handrail must have returns to the wall or floor so clothing or limbs cannot be hooked on an open end. A ramp steeper than one unit vertical in twelve horizontal needs a handrail too.

Whether a permit is required for railing work varies by jurisdiction. Replacing a guard, adding one where none existed, or altering a deck or balcony guard usually is permitted work, because the guard is a safety element with a structural load. Replacing balusters between existing compliant posts often is not. Call the building department rather than guessing, and if a contractor tells you no permit is needed for adding a guard to a raised deck or balcony, get that confirmed independently.

Railing prices track the number of posts and the difficulty of anchoring them far more than the length of rail. What moves an American quote is the number of newels and how each one is attached, whether existing posts are reused, the length of level guard versus raking stair guard, the infill type, the species or metal and finish, whether a graspable handrail is separate or integral, whether blocking has to be added and finishes opened up to do it, whether the work is interior or exposed outside, and whether a permit and inspection are required. Ask specifically how each post will be anchored; that answer explains most of the difference between two quotes.

LokalMatch makes the introduction and leaves the rest to you. You describe the railing once: where it is, how long, how high above what, whether it is a stair or a landing or both, and what you want it made of. Carpenters, deck builders and metal fabricators serving your area receive that request, and the ones interested contact you directly. Those professionals pay for the requests they receive, and homeowners are never charged for the introduction. LokalMatch does not install railings, does not set or negotiate prices, and does not vet, rank or recommend the contractors who respond, so confirming licensing and insurance, and confirming the adopted guard heights and sphere limits with your own building department, remains your responsibility.