I get called out for it a lot: someone’s lifted the carpet in a Victorian terrace, found the original pine underneath, and now has no idea what they’ve taken on. Under the gripper rods and forty years of underlay there’s usually a proper floor waiting. Grey and paint-flecked, but proper.
Those boards were meant to be walked on for a century. Treat them right and they’ll do another. Most of the damage I see comes from people being too keen with the wrong product rather than too lazy.
How should you clean original pine floorboards from day to day?
Less than you think. A soft broom or a hoover on the hard-floor setting takes up the grit that does the actual scratching, and that’s most of the job done. Grit underfoot is what wears a finish thin, dulling the boards in the walkways while the edges of the room stay bright.
For a proper clean, a barely-damp mop and a splash of pH-neutral floor soap. Squeeze it out until it’s almost dry – wood and standing water are old enemies, and pine drinks faster than oak. You’re wiping the surface, not washing it.
Wipe spills the moment they land, red wine and anything with a dye in it above all – a puddle left sitting on tired pine finds its way through a thin finish and stains the timber underneath, and that’s a repair rather than a wipe.
Keep the vinegar for the kettle. It’s brilliant on limescale and wrong on a waxed or oiled floor, where the acid eats into the finish and leaves dull patches you’ll be buffing out for weeks. Same goes for anything with a degreaser in it.
What about a steam mop?
Don’t. For my money the steam mop is the single worst thing that’s happened to old wooden floors since fitted carpet. The heat and forced moisture drive straight through the finish and into the joints between the boards. The wood swells, and when it dries back it cups and splits along the grain. I lifted a section in a flat off Lordship Lane in East Dulwich where a tenant had been steam-mopping weekly for a year, and the boards had lifted at the edges like stale bread. A damp cloth does everything a steam mop claims to, without cooking the floor.
What’s the right finish for period pine – oil, wax or varnish?
Hard-wax oil. That’s my answer and I’ll plant a flag on it.
Original pine wants a finish that sinks in and lets the wood move, because move it will – expanding through a muggy London August, shrinking back over a dry, heated winter. A hard-wax oil soaks into the grain and hardens there, giving a low, warm sheen you can patch-repair in a single worn spot without redoing the whole room. Wax alone is lovely underfoot but needs feeding twice a year and marks if you look at it wrong. Oil is the sensible middle.
Polyurethane varnish is where people come unstuck. It sits on top as a plastic skin that looks fine for two years, then chips and clouds at the wear points – and once a varnish fails you can’t spot-fix it, so you’re sanding the whole floor back to bare wood to start again. On a soft, old board that’s a lot of the board’s life sanded into a bin bag. For my money varnish belongs on a pub floor that gets mopped with a bucket, not on the boards of a Bloomsbury flat where someone wants to see the grain.
Whatever you choose, oil goes on thin – thinner than feels right. Two skinny coats rubbed in with a lint-free rag beat one thick pour, because a heavy coat stays tacky for days and never fully hardens. And spread the used rags out flat to dry outside before they go in the bin. Oil-soaked cloth balled up in a warm bin can catch light on its own – it’s rare, but I’ve seen the scorch marks and it isn’t worth the gamble.
Do you have to sand them back first?
Not always, and this is the bit that saves you a fortune. If the old finish is worn but sound and the boards are just tired and grey, a good scrub with wire wool and white spirit strips the grime and the failing top layer without touching much timber. You oil straight over that. Full sanding is for boards buried under old paint or thick failed varnish. Every pass of the sander takes a millimetre or two off a finite floor, and a Victorian board has maybe two or three left in it before the old cut nails start standing proud – so I sand when I have to and scrub when I can.
How do you deal with the gaps between the boards?
Every period floor has them, and everyone wants them gone. Slow down before you fill them.
Some gaps you leave alone, because the boards need room to swell in summer, and a floor filled tight in January will buckle by August with nowhere to go. The ones worth tackling are the wide, whistling gaps that lose heat and swallow earrings. For those I use thin slivers of reclaimed pine – “splines” – glued into the gap and planed flush, so the fill moves with the floor and near enough disappears. The papier-mâché and rope-and-filler tricks you’ll read about look tidy for a season and then crack and lift as the boards work.
Do the gaps before you oil, always. Fill and plane first, then finish over the top, so the repairs take the same oil as the boards and settle in with them. Fill after you’ve oiled and every spline sits there announcing itself in a slightly different tone to everything around it.
What about the draughts and dust that come up through them?
A Victorian suspended floor has a void underneath it, and that void is vented to the outside air by the airbricks in the wall – healthy for the joists and miserable for your feet in February. You want to stop the draught without sealing the ventilation. A bead of flexible acrylic-based filler run into the worst gaps from above cuts the through-draught while still giving with the timber. In a terrace in Walthamstow I did the front room this way, and the tenant reckoned it knocked a fair bit off what the radiators had to do – the room held its heat instead of feeding the street. Don’t ever block the airbricks outside to fix a draught. That’s how you end up with damp joists and a far worse bill.
What lifts old paint splatter and dark stains?
Depends what made the mark. Paint splatter – and there’s always paint splatter on a period floor, decades of it round the skirtings – comes up with a plastic scraper and patience, or a dab of methylated spirit on old emulsion. Take the scraper along the grain, never across it, or you’ll leave scratches worse than the paint. I spent the better part of a day on a Kentish Town floor scraping cream gloss out of the grain that a decorator had let run off the skirting in about 1985. It comes, but slowly.
The black stuff is different, and harder. Those dark grey and black patches are usually where water and iron have got together over decades – a leaking radiator valve, or a washing machine that wept for a year. It’s a reaction deep in the wood, so sanding often only reveals more of it underneath.
Can you save the black rings around the radiators?
Sometimes. The stain is iron tannate, and it’ll often lift with oxalic acid, sold as wood bleach – you brush it onto the damp stain and leave it to work, then neutralise it and let the board dry, and the grey pulls back towards the honey colour of the rest. It doesn’t always fully clear, and on a bad radiator ring you may get it from black to a soft shadow and no further. I’ll be honest with a client at that point: a faint ghost under the oil reads as age, and age on a hundred-and-fifty-year-old floor is the whole point. Chase it to perfection with more bleach and you just bleach the good wood around it pale, making the repair louder than the stain was.
How often does a period pine floor need re-oiling?
Far less than the tins suggest. For my money they over-egg it to shift more product. A hard-wax-oiled floor in a normal London home wants a fresh coat on the walkways every two or three years, and the low-traffic edges can go five or more. You don’t redo the whole floor each time – you clean it, then lay a maintenance coat down the middle of the room where the wear runs.
The floor tells you when. Once water stops beading on the surface and starts darkening the wood where it lands, the oil’s worn through and it’s due. Test it with a few drops by the door, where the wear is heaviest. One coat too many is its own mistake, mind – pile fresh oil onto a floor that hasn’t worn through and it sits on top half-cured and gummy, holding every footprint. Wait until it asks.
How do you keep them looking good in between?
A maintenance oil or a wax-based polish once or twice a year in the busy rooms, buffed in with a cloth or a low pad. That, and the boring stuff: felt pads under every chair and table leg, grit off at the door with a decent mat, and shoes off if you can talk the household into it. A pine floor doesn’t ask for much attention, but it does ask for the right kind, and the households whose floors still look good after ten years are the ones who did a little often rather than a lot never.
Wipe a drop of water onto the boards by the door and see whether it beads.