Why Copper Suits a Hallway or Bathroom

Copper has a warmth that chrome and stainless steel simply cannot match. It picks up the yellows in a hallway's paintwork, softens the hard edges of a tiled bathroom and looks just as comfortable beside period panelling as it does against a plain white wall. It is also soft enough to cut and drill with hand tools, which makes a towel rail a genuinely achievable weekend project rather than a job for a specialist.

The design we are building here is deliberately simple: one horizontal bar with a short return at each end turning back to the wall. There is nothing to solder if you would rather not, and the whole thing can be cut and assembled on a kitchen floor in an afternoon.

What You Will Need

Everything on this list is available from any decent builders' merchant or hardware shop.

• 22mm copper pipe — one metre gives you a little spare. Use 15mm instead if you want a slimmer, more delicate rail.
• Two 22mm 90° elbows — end-feed if you plan to solder, compression if you do not.
• Two wall flanges in the same diameter, to hide the holes where the pipe meets the plaster.
• A pipe cutter — the rotary type, not a hacksaw. It gives a square cut with no swarf inside the pipe.
• Fine wire wool or an abrasive pad, plus a metal polish and, optionally, a clear lacquer.
• A drill, 6mm masonry bit, wall plugs, screws, spirit level, pencil and masking tape.
• Work gloves and a pipe and cable detector.

If you are soldering, add flux, lead-free solder and a small blowtorch. A heat mat is worth having too — copper conducts heat fast and you do not want to scorch skirting or wallpaper.

Measuring and Cutting the Pipe Safely

Decide where the rail is going before you buy anything. Hold a bath sheet up against the wall and mark where the bar needs to sit so the towel hangs clear of the floor and does not trail in the bath. A rail around 600mm wide suits most hallways; 800mm is comfortable in a bathroom.

Mark your cut lines and wrap a turn of masking tape around the pipe so the line is easy to see. Fit the pipe cutter over the mark, tighten the knob until the wheel bites, then rotate the cutter around the pipe. Tighten by roughly a quarter turn for every full revolution. Resist the urge to crank it down hard — that is how you distort the pipe and leave a burr that no fitting will sit over cleanly.

Once cut, deburr the inside and outside of the end with the reamer on the cutter or a round file. Wipe a cloth through the bore to remove any copper dust. Copper edges are sharp, so keep gloves on until the ends are tidy.

Joining the Frame

Dry-fit everything first, on a flat surface, with no fixings involved. Your two short returns should be the same length — measure them against each other rather than trusting the tape twice.

For a compression fitting, slide the nut and olive onto the pipe, push the pipe fully into the elbow body, then tighten the nut by hand and finish with a quarter turn of a spanner. Hold the elbow with a second spanner as you tighten, otherwise the whole assembly twists out of line.

For soldering, clean both surfaces back to bright copper, apply a thin smear of flux, and push the joint home. Heat the fitting rather than the pipe, moving the flame steadily, and touch the solder to the joint once the flux sizzles. It should be drawn in by capillary action. Leave each joint to cool before handling it. Afterwards, rinse the assembly in warm soapy water — flux residue is mildly corrosive and will stain polished copper within days if it is left on.

Fixing It to the Wall

Run your detector over the wall first. Bathroom walls often hide pipework and cables exactly where you would like to drill. Mark both flange positions with the spirit level against them, then drill, plug and screw the flanges in place.

Slide the rail into position and tighten the flange grub screws. If your flanges fix to the pipe rather than sitting over it, dry-assemble the rail, hold it against the wall, mark through the flange holes, then take it down to drill. A helper makes this far easier, and a length of scrap timber propped underneath will take the weight while you work.

Give the finished rail a firm pull downwards with your hand before you hang anything on it. It should not move at all. If it flexes, your wall fixings, not the copper, are the weak point.

Polishing and Keeping the Finish

Rub the whole rail with fine wire wool, working along the length rather than in circles, then buff with metal polish and a soft cloth. Copper looks its best when the highlight runs in one direction.

From there you have a choice. A coat of clear lacquer will hold that shiny finish for years, though it can be fiddly to apply evenly on a round bar. Leaving it bare means the copper will slowly deepen through bronze to a rich, dark brown — beautiful in a hallway, but uneven in a bathroom where steam and splashes land unevenly.

Whichever route you take, keep the rail away from the direct spray zone of a shower. Prolonged wetting encourages verdigris, that green bloom that can stain grout and tiles. A fortnightly wipe with a dry cloth is all the maintenance a bare copper rail really asks for.