Nordicare Mineral Oil 500ml

Nordicare Mineral Oil 500ml for Chopping Boards and Wooden Worktops

A wooden chopping board rarely changes overnight. Instead, you notice it gradually. The colour looks paler after washing. The surface feels slightly rough. Water seems to disappear into one patch faster than another. A solid-wood worktop can show the same signs around the sink, kettle or favourite food-preparation area.

That is where Nordicare Mineral Oil 500ml fits into normal maintenance. It is a penetrating mineral-oil treatment for absorbent wooden chopping boards and worktops, not a glossy coating that sits heavily on top. Used on the right surface, it conditions dry timber, deepens the natural appearance and helps the wood cope better with everyday moisture and staining.

To use it optimally, you should know when your wood actually needs oil, how much to apply and what oil cannot fix. We go over that, and more, here. 

What You Get From Nordicare Mineral Oil 500ml 

First thing’s first. Mineral oil is not vegetable oil. These products are different from olive, sunflower or rapeseed oils from your kitchen cupboard. Cooking oils can oxidise and change over time, which is one reason you should not automatically substitute whatever edible oil you already have at home. 

A purpose-selected mineral oil is designed to remain stable in this type of surface-care role. With Nordicare Mineral Oil, you are using a refined oil to condition wood, not trying to turn a chopping board into a frying pan.

Food-Safe Odourless and Tasteless

In a food-preparation area, you do not want the maintenance oil to leave a perfume that competes with garlic, bread or fruit, and you do not want a noticeable taste transferring from the surface.

Nordicare Mineral Oil is a food-safe, odourless and tasteless treatment ideal for food-contact timber surfaces. You can use the board for slicing an apple today and onions tomorrow without choosing a maintenance product because of how it smells.

Food-safe does not mean the oil replaces hygiene. You still need to wash a chopping board correctly after use, particularly after raw foods. That includes washing wooden chopping boards with hot soapy water, rinsing them and leaving them upright to dry thoroughly rather than soaking them or putting them in a dishwasher. Oiling and cleaning have different jobs. Keep that in mind as your board handles many foods weekly.

A Non-Drying Oil Rather Than a Curing Finish

Mineral oil behaves differently from drying oils such as linseed oil. It does not cure by forming a hard, polymerised film across the surface. Instead, it remains as oil within the absorbent structure of the wood and is gradually lost through washing, wiping and normal use.

That is why maintenance is easy but ongoing. You do not normally need to strip a hard coating before refreshing an already mineral-oiled board. When the wood looks dry again, you can clean it, let it dry and recondition it.

Mineral oil is not a once-and-done finish. Its strength is the simplicity of regular care on surfaces coupled with easy renewal.

More Than a Century of Furniture and Home Care

The brand you go determines the kind of quality you get. 

Nordicare’s roots go back to Copenhagen in 1905, when O-ZINO-OIL CO. was founded. The business later became part of NGL Nordic in 1979, and the care range developed from the earlier ZINOLIN name into NORDICARE. Cleaning, conditioning and surface care have long been central to the brand.

You can see that in the current Nordicare furniture-care range. It covers products for woods such as teak, mahogany, rosewood, pine and cherry, as well as treatments intended for both modern and antique furniture. Nordicare Mineral Oil 500ml for kitchen timber sits naturally within that.

The mineral oil is part of an established manufacturing and product-development operation.  Nordicare sits within the wider NGL Group, an international business headquartered in Nyon, Switzerland. It has operations in Denmark, France, Germany, the United States, Singapore and China, alongside the Swiss headquarters. NGL Nordic A/S is the Danish company behind Nordicare, and the products are manufactured in Denmark.

Where Nordicare Mineral Oil 500ml Fits Into Kitchen Maintenance

Chopping Boards and Butcher Blocks

A chopping board lives a much harder life than most pieces of furniture. The knife marks are obvious, but washing does just as much to shape its condition. Every rinse wets the fibres. Every drying cycle removes moisture again. Food juices and coloured ingredients add more exposure.

Nordicare Mineral Oil 500ml comes in for conditioning between cleaning cycles. It moves into open, absorbent wood and reduces the dry, pale feel that develops after repeated washing. On a thick butcher block, the same principle applies, while exposed end grain can absorb oil more quickly.

You may notice the need for treatment first at the edges, corners or frequently scrubbed centre of the board. Those areas can lose their richer tone and feel rougher than protected sections. Oiling can restore a more even conditioned appearance and make the surface less eager to take up every small splash.

Note that it does not sanitise the board. Keep using proper food-hygiene cleaning. Recent safefood research on Irish home kitchens found that only 25% of surveyed home cooks reported washing chopping boards every time after preparing raw food. Cleaning discipline is important when you care about the board’s finish over time.

Wooden Worktops Islands and Breakfast Bars

A wooden worktop may not see knife blades directly, but it gets touched and wiped far more often than you think. You set down damp mugs, wipe splashes beside the sink and clean the same strip repeatedly during dinner preparation. Over months, these small actions create uneven wear.

Mineral oil makes most sense where the worktop is bare, absorbent or already maintained with a compatible non-film oil. It helps keep the timber conditioned without changing it into a glossy coated surface. The grain can look richer after treatment, especially where repeated wiping has left the wood looking pale or washed out.

Think about your own kitchen in zones. The section next to the hob may face grease and heat. The section beside the sink sees water. A breakfast bar may mainly collect hands, plates and the occasional cup ring. Those zones will not dry at the same rate, so they do not automatically need oil on the same day.

This is also why you should not use oil as an excuse to ignore spills. Wipe water, wine, juice and cooking residue promptly. Mineral oil can help slow absorption, but it does not make solid wood waterproof. Around sinks and taps, good wiping habits and sound joint details still matter too.

Home Kitchens and Higher-Use Food Environments

At home, one chopping board may be used twice a week while another is used for almost every meal. In a café, deli, cookery school or hospitality kitchen, a timber prep surface may be washed and wiped repeatedly through a single shift. The maintenance demand is completely different.

The sensible approach is to connect inspection to use. If a surface is cleaned more often, look at it more often. Check for pale areas, roughness and fast water absorption during a normal closing or cleaning routine. In commercial settings, oiling also has to fit around food-safety procedures and downtime. The surface must be clean, dry and available long enough for treatment before it returns to preparation. A maintenance check built into an existing routine is usually easier for staff to follow. That keeps maintenance visible without interrupting the pace of service.

What Nordicare Mineral Oil 500ml Does Inside the Wood

Penetration Instead of a Thick Surface Film

Wood looks solid, but its structure still contains cells, pores and pathways. Once the timber is cut and dried, that structure still affects how liquids enter the surface. A penetrating oil can move into these spaces instead of building a thick layer above them.

That is the basic action behind Nordicare Mineral Oil. It is a fluid treatment rather than a heavy paste or coating. That helps explain its easy spreading behaviour. When you spread a controlled amount over clean, open wood, the surface takes up oil according to its porosity and condition.

The result feels different from varnish or lacquer. You still see and feel the grain. There is no hard plastic-like skin sitting between your hand and the timber. That can be especially appealing on a chopping board or butcher block where the tactile character of wood is part of why you chose it.

Penetration is also why preparation matters. If the surface already has an intact varnish film, the oil has nowhere useful to go. It will sit on top and feel greasy rather than conditioning the wood beneath.

Slowing Everyday Moisture Uptake

Wood is hygroscopic, which means it exchanges moisture with its surroundings. Changes in moisture content influence swelling, shrinkage and other physical properties of wood. In a kitchen, you add direct wetting from washing and spills to that natural exchange with the air.

Mineral oil helps by occupying part of the absorbent surface structure and making it harder for water to rush straight into dry fibres. Think of it as slowing the first stage of wetting rather than sealing the board inside a waterproof shell. A wiped splash has less opportunity to soak in immediately, which can help with day-to-day staining and moisture exposure.

Keep limits in mind. Leave a wet board in a sink and water still wins. Let water pool around an undermount sink joint and oil will not repair a poor seal. Soaking, prolonged dampness and repeated saturation can still encourage movement, roughness and damage.

Good maintenance combines conditioning with sensible water management. Oil the right surface, but also wipe spills, dry boards properly and avoid leaving timber sitting in water unnecessarily.

Bringing Back Grain and Natural Colour

Dry wood scatters light differently from conditioned wood, which is why an old board can look greyish or chalky even when it is perfectly clean. Once mineral oil enters the upper fibres, the grain usually looks deeper and the natural colour becomes richer.

The change can be subtle on pale maple and much stronger on darker walnut. End grain often darkens more quickly because it absorbs more readily. If you are treating a valued worktop for the first time, test a discreet area so you know whether you like the colour shift before doing the entire surface.

This visual improvement is not paint or stain. You are mainly seeing the existing timber with less dry-looking surface scatter. That is why the result tends to feel natural rather than artificially recoloured.

How to Know Whether Your Surface Is Suitable

Bare Wood and Previously Oiled Wood

The best candidate for mineral oil is wood that can actually absorb it. Bare timber, unfinished chopping boards and surfaces already maintained with a compatible penetrating oil are the obvious examples. On these surfaces, the oil can move into the upper fibres instead of floating on a barrier coating.

If you are not sure what you have, look at how the surface behaves. A dry, open-grained board often darkens quickly when dampened, then turns paler as it dries. Water may soak into one area rather than sitting in round beads. The timber can also feel slightly fuzzy after washing because raised fibres are exposed.

Previously oiled wood often gives you a different clue. High-use areas look lighter first, while protected edges retain more depth. If a small test drop soaks in rather than sitting on top, a penetrating treatment is more likely to suit.

Still, do not rely on one clue alone. A worktop installed by a previous owner may have wax, hardwax oil, Danish oil or another system already on it. Check any maintenance records or product information you have before changing treatments. Compatibility is more important than convenience. A familiar feel after washing helps you recognise gradual change.

Lacquered Varnished Painted and Sealed Surfaces

A film finish changes things. Lacquer, varnish and paint create a layer above the wood specifically to block liquids and protect the material beneath. If that film is intact, mineral oil cannot penetrate in the same way it enters bare timber.

Applying oil over a sound coating can leave you with smears, greasy patches and dust attraction. Look for a continuous sheen, a plastic-like feel or scratches that appear to sit in a clear layer above the grain. Painted surfaces are even easier to identify. Nordicare Mineral Oil is not intended as a polish for these finishes. If the coating is failing, decide whether it needs cleaning, local repair or full refinishing before you introduce a different maintenance system. A patchy film can otherwise make oiling unpredictable and visually uneven. A quick water-drop test can mislead here because scratches may absorb moisture even while the coating remains largely intact.

Different Woods and Different Absorption Rates

Not every piece of timber drinks oil at the same speed. Species, density, grain direction, age and previous maintenance all change absorption. A dry end-grain butcher block can take up oil much faster than a dense hardwood worktop that has been regularly conditioned.

End grain exposes the ends of the wood fibres and often absorbs rapidly. Flat-sawn faces may take oil more slowly. Areas beside a sink may be more depleted than a rarely touched corner. This is why a universal coverage figure is only a rough guide. Use the stated 10 m² per 500 ml only as a rough planning figure because actual coverage depends on how thirsty your wood is overall. Let the wood’s response guide the amount rather than trying to force a fixed quantity into every square metre. That variation is normal and should shape application.

When Oiling Is Not the Right Fix

Some problems are beyond routine conditioning. Splits, loose joints, soft rotten wood, persistent mould, major water damage and heavily contaminated timber need attention before oiling.

The same applies to a failing varnish or lacquer. Oiling across patches of bare timber and surviving coating usually creates an uneven result because different areas absorb differently.

If a chopping board has a deep crack that traps food debris, replacement may be more sensible than cosmetic treatment. If a valuable worktop has black water staining or movement around a sink joint, fix the moisture source first. Mineral oil is excellent maintenance when the underlying surface is sound. It is not a substitute for repair.

Preparing the Wood Before You Apply Oil

Start With a Properly Clean Surface

Oil should go into wood, not into a layer of kitchen residue. Before treatment, remove crumbs, grease, sticky food deposits and any cleaner left on the surface. Wash with hot soapy water, rinse well and leave the board upright to dry thoroughly. Do not leave a wooden board soaking in the sink and do not put it in a dishwasher unless its manufacturer specifically designed it for that treatment.

For a worktop, use a cleaning method compatible with the existing wood finish. Wipe away grease around the hob and sticky residues around preparation areas. Then let the timber dry fully.

The aim is not to make the surface smell strongly of cleaner. It is to expose clean wood so the oil can distribute evenly. If you can still feel tackiness or see greasy shadows, preparation is not finished. Pay attention to board corners and worktop back edges, where dried residue can remain unnoticed until you start oiling.

Give Washed Wood Time to Dry

You wash the chopping board after dinner, decide it looks dry twenty minutes later and start oiling. The top may feel dry while moisture remains within the fibres, in deeper cuts.

Give washed wood enough time to dry completely. In a normal home routine, that often means cleaning the board after use, standing it upright with air circulating around both faces and oiling it later rather than immediately. A worktop should also be free from damp patches around sinks, draining areas and joints.

Drying is important because mineral oil and water do not mix. Nordicare Paraffin Oil is insoluble in water, so moisture can disrupt absorption. If the surface is still wet, absorption can become patchy and the oil may sit unevenly on top.

You do not need to be ‘overly technical’ to test things. Use time, airflow and touch. If the timber still feels cool or visibly darker from washing, wait before you continue oiling.

Deal With Roughness Before Oiling

Repeated wetting can raise grain, and years of use can leave a board uneven. If bare or previously oiled wood feels rough, very light sanding may improve the surface before you condition it. For new timber, 150-grit abrasive is a practical final preparation point before treatment.

Do not turn routine maintenance into aggressive resurfacing. Sand only when the surface needs it, work evenly with the grain where appropriate and avoid creating dips around worn areas. After sanding, remove every trace of dust. Vacuum where suitable, then wipe with a clean method that does not leave residue and allow the surface to dry again. If the timber has a film finish, stop before sanding. You first need to decide whether you are repairing that coating or stripping it completely. Mineral oil should not become an accidental third layer in an unknown finishing system. A smooth, even surface takes oil predictably afterwards.

Patch Test and Set Up the Work Area

Before treating the whole worktop, choose an inconspicuous spot and apply a tiny amount. A patch test shows you two useful things at once. You see how quickly the wood absorbs the oil and how much deeper the colour becomes.

Then set up properly. Have clean, lint-free cloths or suitable microfibre cloths ready, plus enough spare cloth to remove excess. Protect nearby painted surfaces, flooring or fabrics if drips are possible. Work with normal ventilation and keep children away from the bottle and wet treatment area.

A little preparation prevents the familiar mid-job problem of discovering your only clean cloth is already saturated just when the surface needs a final buff. Keep a second cloth nearby for edges and corners, where excess oil can collect unnoticed. Keep the area tidy.

How to Apply Nordicare Mineral Oil 500ml

Use Enough Oil to Wet the Surface Evenly

Start with a small amount. You are trying to create an even wet appearance across absorbent wood, not flood the surface. Apply a few drops or a modest amount to the timber, then spread it with a clean cloth.

Work in manageable sections on a large worktop. On a chopping board, you can usually cover one face comfortably before moving to the edges. Add more oil only when the cloth stops spreading a continuous film or a dry area absorbs the first pass immediately.

The wood should look evenly wetted, but pools are a warning that you are applying faster than it can absorb. More product does not automatically mean better protection. Controlled application gives you a cleaner finish and makes the final wipe much easier, particularly on vertical edges where drips can otherwise run onto cabinets or flooring nearby.

Work With the Grain and Watch How the Wood Responds

Spread the oil in overlapping passes, following the grain where the pattern makes that practical. The direction is less about forcing oil down a channel and more about keeping your application orderly. It helps you see where you have been and reduces missed strips on a worktop.

Pay attention to changes as you work. A pale patch may darken almost instantly and then lose its wet sheen within a minute. End grain may drink the first application while the face grain remains glossy. An area beside a sink may behave differently from the section beneath a bread bin.

Respond to those differences rather than fighting them. Add a little more where the oil disappears into genuinely thirsty wood. Spread excess from slower areas towards faster ones. If a section remains wet while its neighbour keeps absorbing, do not pour the amount on both just for symmetry.

This is the advantage of applying by observation. The timber tells you where maintenance has been lost. Your job is to even out the condition without leaving a reservoir of oil above the surface.

Let the Wood Absorb What It Needs

Once the surface is evenly wetted, give the oil time to penetrate. For Nordicare Mineral Oil, allow at least 15 minutes before removing the remaining excess on clean, dry absorbent wood. Use that as the product-specific working guidance, while checking the bottle you have in case its label has been updated.

During this period, look rather than constantly rubbing. Areas that turn matt very quickly are absorbing more. If the board is new, very dry or freshly sanded, those zones may need another light application. Areas that remain shiny are telling you they already have more oil than they can take immediately.

Do not invent a longer soaking period because you assume overnight must be better. With a non-drying oil, the goal is useful absorption followed by a clean surface, not leaving a wet layer to sit indefinitely.

For a reversible chopping board, remember the edges and, when appropriate, both faces. Uneven maintenance can contribute to uneven moisture response over time, especially on thinner boards during washing and drying cycles.

Remove Every Trace of Unabsorbed Excess

The final wipe is not optional. After the absorption period, take a clean cloth and remove all oil still sitting on the surface. Keep turning the cloth so you are lifting excess rather than simply moving it from one patch to another.

Then buff until the wood feels conditioned but not slick. Run clean fingertips lightly across the surface. If you can see obvious smears, leave oily fingerprints or feel a greasy film, keep wiping.

This step is what separates a well-oiled board from a sticky one. Oil left on top can collect dust, mark nearby items and make the surface unpleasant to use. The protection you want is primarily within the wood, not as a puddled coating above it.

Repeat Only When the Wood Still Looks ‘Thirsty’

A very dry board may need another treatment after the first application has been absorbed and wiped. That is normal. Very dry or freshly sanded timber can take more oil than a regularly conditioned worktop.

Judge the need by the surface. If the wood still looks patchy and the driest areas absorb a tiny test amount quickly, another light treatment may be useful. If the whole surface remains evenly conditioned and no longer drinks oil readily, stop.

Do not chase a particular number of coats. The best stopping point is when absorption has evened out and there is no excess left on top. Dry edges can still need extra attention.

Return the Surface to Normal Use Sensibly

After the final buff, let the treatment settle before you put the surface straight back into food preparation. Leave a treated board out of use for about an hour after the final wipe.

Before use, check the surface. It should feel dry to the touch, with no transferable oil or greasy residue. If your bottle carries different instructions, follow the label. Once ready, return to normal food preparation and cleaning. The oil does not need special daily handling after application.

Building Oiling Into a Maintenance Routine

Learn the Signs of Dry Wood

The surface gives you several clues when the chopping board is drying out. Colour is often the first. Walnut looks greyer and less saturated, while maple or beech can take on a pale, almost chalky appearance. Touch gives you another clue. Fibres that once felt smooth can begin to feel slightly raised after washing. End grain may seem rougher than the face. On a worktop, your hand may notice dryness before your eye does because a busy strip feels less silky than a protected area.

Then watch water during ordinary cleaning. You are not conducting a soak test. Simply notice whether a wiped droplet sits briefly on the surface or darkens the wood almost immediately. Rapid local absorption can show that the oil reserve has been depleted in that area.

These signs are more useful when considered together. A pale board that feels rough and wets quickly is giving you a strong maintenance signal. One faint patch after a single wash may simply need to dry. Learn the normal look and feel of your own timber for subsequent inspection.

Use Condition Rather Than Following a ‘Fixed Calendar’

It is tempting to create a rule such as oil every month and never think about it again. A monthly refresh is a useful general reference point for this product for many users. However, use it as a starting reference, not a mandatory law for every kitchen.

A serving board used for cheese twice a month may stay conditioned for much longer. A café prep block washed repeatedly each day may need inspection far sooner. A worktop beside the sink can dry faster than the breakfast bar on the same island.

Build the decision around condition. During your normal clean, look for dullness, roughness and uneven absorption. If the wood still feels smooth, looks even and resists immediate wetting, there is no benefit in adding oil just because a date arrived.

This approach also prevents over-application. You want enough mineral oil in the surface to keep the wood conditioned, while still removing every unnecessary residue from the top. So that means inspecting, treating only when signs of dryness appear, and writing down the date only if records genuinely help your routine.

Clean Gently Between Oil Treatments

Oiling lasts longer when your cleaning routine is effective without being unnecessarily aggressive. For a domestic wooden chopping board, hot soapy water, a rinse and thorough air drying are the foundation. Avoid soaking the board, because prolonged water exposure works against the condition you are trying to maintain.

Clean promptly after food preparation rather than allowing residues to dry into the grain. If raw meat, poultry, seafood or eggs have touched the board, hygiene takes priority over preserving oil. Follow appropriate food-safety cleaning even if that means the surface needs conditioning sooner.

On worktops, wipe spills as they happen. Repeated strong degreasers can strip oil faster, so use products suited to the finish and soil level rather than the harshest cleaner.

Take cleaning and oiling as two linked jobs. Cleaning removes contamination and everyday soil. Oiling deals with the timber’s condition after that cleaning. Trying to use oil as a cleaning shortcut leaves dirt behind. Trying to preserve oil by under-cleaning a food surface is equally poor maintenance practice.

Adjust the Routine for Busy Kitchens

Higher-use kitchens benefit from simple checks that fit into work already being done. It needs a clear person responsible for noticing surface condition during cleaning and flagging when maintenance is due.

Add a quick check to the closing routine. Is the board clean and dry? Are any sections becoming pale or fuzzy? Does a worktop near the sink show new staining, cracking or coating failure? If it only looks dry, plan oiling during a period when the surface can be taken out of service. If it is damaged, escalate it instead of hiding the problem with oil.

More frequent washing usually means more frequent inspection, but not necessarily a fixed re-oiling interval. Record treatments if your food-safety or maintenance system requires traceability. In a home kitchen, the same principle can be much simpler. Notice the board while putting it away. When it looks tired, plan to clean it early enough that it can dry before treatment. That keeps responsibility clear.

Common Mineral Oil Mistakes and How to Avoid Them

Leaving Too Much Oil on the Surface

A greasy finish is usually an application problem, not proof that mineral oil is unsuitable. The most common cause is leaving unabsorbed product on top of the timber. You see shiny patches, fingerprints, streaks or a surface that seems to attract lint soon after treatment.

The fix is simple. Stop adding oil and buff firmly with a clean cloth. On a wood surface, you want the timber to look conditioned without feeling coated.

If greasy patches keep returning, the underlying wood may already be saturated or the surface may have a finish that blocks penetration. Recheck compatibility rather than pouring on another layer. A maintenance product works best when you let the surface tell you when it has had enough.

Oiling Wood That Is Still Damp

Applying mineral oil while moisture remains in the fibres encourages uneven uptake because oil and water do not blend into a uniform treatment.

You may end up with dark patches beside pale ones, or oil sitting on an area that felt dry at first glance. The solution is prevention. Wash first, then give the board or worktop enough airflow and time to dry fully.

If you have already oiled damp wood, remove all surface excess and allow it to dry rather than adding more. Once the timber is clean, reassess the condition. Patience during preparation usually saves time because correcting a patchy finish after oiling is harder than simply waiting.

Using Aggressive Cleaning Methods After Oiling

A freshly conditioned board is not a reason to weaken hygiene, but neither does every clean need chemical strength. Prolonged soaking, dishwashers, excessive heat and harsh degreasers can strip oil rapidly and increase wetting and drying stress on wood.

Use the cleaning method suited to the food risk and finish. For a household wooden board, safefood recommends hot soapy water, rinsing and upright drying rather than soaking or dishwashing. If your required cleaning regime is intensive, accept that the timber may need inspection and reconditioning more often. Do not compensate by leaving more mineral oil on the surface after treatment.

Mixing Mineral Oil With an Unknown Existing Finish

Gloss often signals a film finish. Mineral oil applied over varnish, lacquer or another sealed coating cannot condition the wood in the same way.

Before treatment, identify what is already there. Check installation paperwork, old product tins or the manufacturer’s care instructions if available. Mixing systems without knowing their chemistry can create greasy areas, patchy colour or adhesion problems during future refinishing. When the existing finish is uncertain, a small test and a little investigation are safer than treating the entire worktop. If water beads and the surface has a sheen, pause before assuming dryness means the timber needs oil.

Expecting Oil to Repair Damage

Mineral oil can make dry wood look healthier, but it does not repair timber. A crack may darken after oiling and become less visually obvious, but the split is still there. A burn mark remains scorched wood. A loose glue joint remains loose.

Treat damage according to its cause. Light knife scoring on a chopping board may be removable through resurfacing. Cracks that trap food can make replacement safer. Black staining around a sink may signal prolonged moisture exposure. Rot or soft timber requires repair, not conditioning.

Use oil when the wood is structurally sound and simply needs surface care. You avoid wasting product, and more importantly, you do not disguise a problem needing repair.