Material
Solid oak
Solid timber that moves with moisture and cups at a wetted joint, and that can be sanded and refinished, which most floors cannot.
- SurfaceSemi porous
- WashingSpot only
- Colour run riskLow
- Reviewed7 September 2026
What solid oak can and cannot take
- Heat Use with care
- Water and soaking Use with care
- Acids, including vinegar Use with care
- Strong alkalis Avoid
- Solvents Avoid
- Chlorine bleach Avoid
- Abrasives Avoid
Always test on a hidden area first and let it dry before you treat the visible mark.
General rules for solid oak
Deal with a spill immediately and keep water out of the joints. Solid timber expands as it takes up moisture and a board that has been wetted along one edge can cup, which shows as a raised edge along the length of the board.
Clean with a well wrung mop and a wood floor cleaner appropriate to the finish, and dry the floor rather than leaving it.
The compensation is that solid oak can be sanded. A mark that has gone into the timber is a refinishing job rather than a permanent defect.
Check the label
Solid oak is timber all the way through, which means it moves with moisture and it can be sanded and refinished many times. Both facts matter here: water at a joint causes cupping, and a mark that will not clean off can be sanded out, which is not true of most floors.
Stains on solid oak
- Baby sick Blot the liquid up straight away and keep it out of the joints between boards. Solid timber expands where it...
- Blood Blot fresh blood with a dry white cloth and stop before adding water or cleaner. Solid Oak can be permanently...
- Body oil Lift free oil from solid oak, then clean a small area with a maker-approved mild detergent solution and a sof...
- Breast milk Blot the spill, identify the finish and use a controlled cold clean only where permitted. Use plain cold wate...
- Bronzer Lift loose bronzer from solid oak before it is rubbed in. Blot cream bronzer, follow the material or care lab...
- Coffee Wipe coffee off solid oak promptly with a soft cloth. Use moisture only on a confirmed sound finish whose mak...
- Concealer Lift loose concealer from Solid Oak while dry and absorb fresh oil without rubbing. Do not add water or make-...
- Cooking grease Lift and absorb cooking grease from Solid Oak without adding liquid. Water or solvent can enlarge the damage,...
- Deodorant Lift loose deodorant from solid oak with a dry white cloth, then wipe the remaining film with cool water and...
- Hair dye Blot Solid Oak dry without rubbing or adding household cleaner. Keep the dye box and ask the appropriate leat...
- Lipstick Lift lipstick from Solid Oak while dry and absorb fresh oil without rubbing. Do not add water or make-up remo...
- Motor oil Blot and absorb motor oil from Solid Oak without adding liquid. Water, solvent or pressure can enlarge the da...
- Nail polish Lift free polish gently if the face permits contact. A maker-approved mild damp wipe can clear loose residue,...
- Period blood Blot fresh period blood with a dry white cloth and stop before adding water or cleaner. Solid Oak can be perm...
- Pet urine Blot fresh urine with plain white towel and stop before adding water or cleaner. Solid Oak can be permanently...
- Sweat Blot sweat from Solid Oak without adding liquid. Let it dry, remove only loose salt gently and refer a visibl...
- Tomato sauce Lift dry and wet tomato residue from Solid Oak without rubbing or adding liquid. Blot gently, then refer any...
Solid oak flooring is timber throughout, usually tongue and grooved.
It moves
Wood takes up and gives off moisture with the air, and a board wetted on one face or one edge expands there. The result is cupping, a raised edge along the board, which sometimes flattens as it dries and sometimes does not.
The joints are the route in
A tongue and groove joint is not a seal. Water standing on a seam goes down into it.
It can be refinished
Solid oak has enough thickness above the tongue to be sanded several times over its life. That is the real advantage of solid over engineered, and it means a stained board is not necessarily a lost one.
The finish decides the cleaner
Lacquered and oiled oak want different products, and using an oil cleaner on a lacquered floor leaves it slippery and dull.
Sources
What we checked and when. Where a manufacturer instruction disagrees with anything here, follow the manufacturer.
-
Care and maintenance guidance, Atkinson and Kirby
manufacturer
UK wood flooring maker's guidance to clean spills immediately and not leave wet items on a wood floor, to damp mop with a well wrung mop or a barely dampened microfibre cloth, that steam cleaners and steam mops are not recommended, that oil based, wax based and ammonia based cleaners can damage the floor, and that an oiled floor is maintained by reapplying maintenance oil and polishing it until the surface looks uniform.
Checked 7 September 2026
-
Restoring water damaged wood floors, Sanding Wood Floors
specialist
UK floor sanding specialist explaining that cupping is where the edges of the planks raise into a cup shape, that water often leaves a dark mark in the wood, that the floor must be allowed to dry out first and that this may take several days, that sanding then removes the warped and damaged layer, and that a buckled floor or one with extensive mould growth needs replacing rather than restoring.
Checked 7 September 2026
-
Wash and Care for oiled wood, Osmo UK
manufacturer
Oil finish manufacturer guidance that an oiled floor is cleaned with about 15 ml of its wash and care product in 2 litres of water, applied with a damp rather than wet mop and wiped dry immediately, that the product contains natural oils which stop the floor drying out, and that a stubborn mark on an oiled or waxed floor needs a liquid wax cleaner rather than the ordinary wash.
Checked 7 September 2026