How to Measure for a Stair Railing

Measuring a staircase for a custom iron railing takes about five minutes and needs nothing more than a tape measure and a phone. You measure along the slope of the stairs rather than along the floor, you decide the height you want the rail to sit at, and you photograph the space. That is enough for a workshop to give you a firm price. It does not need to be exact at this stage. Precise dimensions matter before anything is cut, and by then they will have been confirmed with you on a drawing. What you are doing now is giving a workshop enough information to price the job properly instead of guessing at it. We have been forging ironwork in Lahore since 1976, and in that time we have learned that the measuring stage is where most people give up — not because it is difficult, but because they are asked for far more than is actually needed to begin. So here is what is genuinely needed, and what is not. What to measure 1. The length along the slope This is the measurement most people get wrong, and it is the one that matters most. Do not measure the floor space the staircase occupies. Run your tape along the line the railing will actually follow — from the nose of the bottom step to the top of the last step, following the angle of the stairs. A staircase that occupies ten feet of floor might need thirteen feet of railing, because the rail travels the hypotenuse rather than the base. If your staircase turns a corner, has a landing, or curves, measure each straight run separately. Tell us how many runs there are and roughly where they meet. Curved staircases are ordinary work for us, but they need a little more information — usually a photograph from a distance so we can see the sweep. 2. The height you want Measure from the surface of a step straight up to where you want the top of the handrail to sit. If you are replacing an existing railing, measure the one that is already there — it is almost always the fastest and most reliable answer. If you are not sure, say so. Most places set a building code minimum for railing height, and it differs between countries and often between individual states or councils. Tell us where the railing is going and we will check the requirement before drawing anything. It is not a question you should have to research yourself. 3. The width, where the railing crosses a landing or balcony Straight across, wall to wall or post to post, at the narrowest point. If your run includes both a sloped section and a flat section at the top, measure them separately and say which is which. 4. A photograph One photograph taken square-on to the staircase, with something in it for scale — a tape measure, a door, a chair. This is worth more than people expect. A good photograph tells a workshop the wall finish, the step material, the light in the room, what the railing has to sit against, and how the space is actually used. We can often spot a fitting problem from a photograph that would never appear in a list of numbers. What you do not need to worry about • Being precise to the millimetre. Round numbers are entirely fine at this stage. • Inches or centimetres. Either is fine — just say which you have used. • Choosing a material, a finish or a colour. Those decisions come later, once you know the number and want to go further. • Whether your staircase is square. It almost certainly is not, and that is normal in any building more than a few years old. Measure at the top, middle and bottom if they differ, and give us all three figures. • Whether the design is possible. If it can be drawn, it can usually be forged. Send the reference image and we will tell you honestly if something will not work. If you are replacing balusters or spindles only You do not need the full staircase measurement. This is a common job — people often want to keep a timber handrail and newel posts and replace only the vertical components with iron. In that case: • Count how many you need, and say whether any are a different length to the rest. • Measure the height of one existing baluster, from where it sits in the tread to where it meets the handrail. • Measure the gap between two of them, centre to centre. This spacing is usually set by your local building code and it is worth keeping consistent. • Photograph how one is fixed at the top and bottom. This matters more than anything else, because a replacement that matches the existing fixing can be installed without altering your treads or handrail. A note on stairs that are not straight Curved staircases, staircases that turn through ninety degrees, and staircases with a landing partway are all normal commissions. What they need is one extra thing: a photograph taken from far enough back to show the whole shape, plus a rough note of where the turn happens — for example, "eight steps, then a landing, then five more steps turning left." For a genuinely curved staircase, we may ask for a site measurement or your builder's drawing before we commit to a price. That is not an obstacle; it is us refusing to guess on something where a guess would be expensive for you. What happens after you send it A firm price, usually within one to three working days. Not a range — a real number for your staircase, with freight and duty included if you are outside Pakistan, so the figure you see is the figure you pay. If you decide to go ahead, you then see a drawing of your railing to scale before anything is cut, and nothing proceeds until you have approved it. After that you see photographs and video of the bare metalwork before it is painted — the stage where a change still costs nothing, because steel can be cut and re-forged but paint is close to a point of no return. Finally you see the piece finished in your chosen colour and packed for shipping, before it leaves us. Three approvals, before your ironwork ever gets on a ship. A note on fitting For orders outside Pakistan we do not fit the railing ourselves. Your own contractor or fitter does that, and the piece arrives ready to install rather than as a kit needing further fabrication. What we do is speak with your fitter or engineer during production, so the piece is made to be straightforward to install and to meet the code where you are. Drawings, a fixing schedule and an installation guide ship with the ironwork. If you do not yet have a fitter, tell us — we can often help you find one. Frequently asked questions How do I measure a staircase for a railing? Measure along the slope of the stairs, from the nose of the bottom step to the top of the last step, following the angle rather than the floor. Then measure the height you want from a step up to the top of the handrail, and take one photograph square-on to the staircase. Do the measurements need to be exact? Not at first. A rough measurement is enough for a firm price. Exact dimensions are confirmed on a drawing that you approve before anything is cut. Should I measure in inches or centimetres? Either. Just tell us which you have used. How high should a stair railing be? Most places set a code minimum, and it varies by country and often by state or council. Tell us where the railing is going and we will confirm the requirement before drawing anything. What if my staircase is curved or turns a corner? Measure each straight run separately, tell us how many there are and roughly where they meet, and send a photograph taken from far enough back to show the shape. Curved staircases are normal work for us. Can I replace just the balusters and keep my existing handrail? Yes, and it is a common request. Count how many you need, measure the height of one, measure the spacing between them, and photograph how they are fixed top and bottom. Send your measurements and a photograph whenever you are ready, and we will come back with a firm price, usually within one to three working days.