Interior paint should not start peeling, bubbling or looking tired a few months after it has been done. When it does, the problem is usually not the paint tin. It is often poor preparation, damp, the wrong product for the room, or a surface that was never properly dealt with before the roller came out.
As decorators working across Kensington, Chelsea and nearby London properties, we see this a lot in rental flats, period houses and small commercial premises. A living room wall might look fine for seven years, while a hallway in a busy family house can look battered after two. A bathroom ceiling may fail in eighteen months if steam and ventilation have not been sorted first.
So, how long should interior paint actually last? As a plain guide, well-prepared walls in bedrooms and living rooms often last 5 to 7 years, hallways and staircases 2 to 4 years, kitchens and bathrooms 3 to 5 years, woodwork 5 to 8 years, and ceilings 7 to 10 years if the property is dry and sound. If you are nowhere near those figures, something underneath the finish probably needs attention.
Why Interior Paint Fails Earlier Than It Should
Paint is only the final skin on the wall. If the plaster is dusty, damp, greasy, cracked or full of old filler ridges, the new coating is sitting on a weak base. You can buy a good trade paint and still get a poor result if the surface has not been washed, sanded, filled, sealed and allowed to dry properly.
London homes add a few extra complications. Victorian and Edwardian terraces often have lime plaster, old distemper, chimney breast staining, hairline movement cracks and solid walls that get colder than modern cavity walls. Flats in converted buildings can also suffer from condensation where insulation and ventilation have been altered over the years.
Landlords and homeowners also need to watch for safety issues hidden behind what looks like a decorating job. Black mould around a window might be poor ventilation, but staining below a bathroom could be a plumbing leak. Brown patches on a top-floor ceiling may need a roofing check before any decorator paints over them. Where damp, electrics, gas flues or structural movement are involved, a professional inspection is the sensible starting point.
Assess The Room And Its Use
Start by looking at how hard the room works. A spare bedroom in a dry flat may keep its finish for 7 years or more, while a narrow communal hallway in a rental property can need repainting every 18 to 36 months because of bags, bikes, pushchairs and hand marks.
Bathrooms, kitchens and utility areas should be judged more carefully. Steam, cooking grease and temperature changes are rough on standard emulsion, especially on ceilings and around external walls. If paint is dull, patchy, shiny in rubbed areas, or marked beyond cleaning, it is usually time to repaint rather than keep touching it in.
For small businesses, reception areas and washrooms often need more regular decorating because customers notice scuffs before staff do. A clean repaint can be part of basic property upkeep, not just a cosmetic extra.
Check For Damp, Cracks And Movement
Do not paint straight over bubbling, flaking or stained areas. Scrape back a small section and check whether the paint is lifting from the previous coat, the plaster, or a damp surface. If the wall feels cold and powdery, or the stain keeps returning after stain block, the cause has not been fixed.
Typical warning signs include blistering near skirting boards, mould behind wardrobes, brown ceiling marks, salts on chimney breasts, and cracks that reopen after filling. In Kensington and Chelsea period properties, old chimney breasts can hold soot stains and hygroscopic salts, which pull moisture from the air and spoil fresh paint unless properly treated.
If you suspect a leak, get it checked before decorating. Our team may involve plumbing, roofing or electrical specialists where needed, because a decorator cannot make a leaking pipe, failed gutter or unsafe fitting disappear with a coat of paint. Around sockets, light fittings and damp patches, safety comes first and professional inspection is the right call.
Prepare The Surface Properly
Good interior decorating is mostly preparation. We remove loose paint, rake out failed cracks, fill in layers rather than one thick lump, sand smooth, dust down and clean greasy surfaces before applying anything new. Skipping these steps is the main reason a wall looks good on day one and poor by month six.
New plaster needs to dry properly before painting. As a rough guide, a small skim coat often needs at least several days in good conditions, and sometimes longer in cold, damp rooms. It then needs a suitable mist coat, usually diluted matt emulsion, so the plaster is sealed evenly before full coats are applied.
Older paint can also be a risk. In homes built before the 1960s and 1970s, there may be lead-based paint on woodwork, doors, frames or old built-in cupboards. Do not dry sand unknown old gloss into dust. A lead test and safe working method are worth the small cost, especially where children, pregnant residents or staff are present.
Choose The Right Paint For Each Area
Standard contract matt is not the answer for every wall. It is useful on new plaster and some ceilings, but it marks easily and does not usually stand up well in busy hallways or kitchens. For family homes and rental properties, a durable matt or washable emulsion is often a better choice for walls that will be wiped down.
Bathrooms and kitchens need paints that cope with moisture and cleaning. That does not mean paint will solve poor ventilation, but a proper kitchen and bathroom paint can last longer than basic emulsion on ceilings and upper walls. Around splashbacks, baths and showers, the sealant, tiling and extractor performance matter just as much as the paint.
Woodwork needs a different approach again. Skirting boards, doors, window boards and architraves take knocks, so we normally use a hard-wearing eggshell, satin or gloss system after sanding and priming as required. Period sash windows need particular care because painting over moving parts or drainage gaps can cause sticking and moisture problems.
Apply The Coats In The Right Conditions
Paint needs time and the right conditions to cure. Cold rooms, wet plaster, poor airflow and heavy coats all slow drying and can leave the finish soft, patchy or prone to marking. We would rather apply two proper coats with drying time than one thick coat that skins over and fails.
Most interior walls need one primer or mist coat where required, then two finish coats. Deep colour changes, strong stains or high-traffic commercial areas may need additional coats or specialist primers. Cutting corners here often shows later as flashing, roller marks or visible old colour in daylight.
Ventilation matters, but so does dust control. Opening every window on a windy day can blow grit and pollen onto wet paint, especially in London streets with heavy traffic. We balance airflow, temperature and drying time so the finish cures cleanly.
Protect The Finish After Painting
Fresh paint may be touch dry quickly, but it is not fully hardened straight away. Many modern emulsions need a couple of weeks before they reach full durability, so scrubbing marks too soon can polish or damage the surface. Light cleaning is fine once cured, but harsh chemicals can shorten the lifespan.
Furniture should not be pushed tight against external walls, particularly in older flats with solid walls. Leave a small air gap behind wardrobes and sofas to reduce condensation and mould risk. This is especially useful in basement flats, top-floor rooms and converted buildings where airflow can be poor.
Keep an eye on the small things that damage paint early. Failed silicone around a bath, a dripping radiator valve, a loose curtain pole, or a door handle hitting the wall will all spoil new decorating. A few small repairs before or during decorating can add years to the final finish.
Plan Repainting Around London Homes, Tenancies And Seasons
Timing makes a difference. Spring and early autumn are often good periods for interior decorating because rooms can be ventilated without being freezing cold. Winter decorating is still possible, but drying can take longer in older London homes, especially where heating is patchy or windows are draughty.
For landlords, it is usually cheaper to decorate properly between tenancies than to patch around furniture and occupants. A single room repaint in London might typically cost around £350 to £750 depending on size, condition and paint choice. A hallway and staircase can commonly sit between £900 and £1,800 because of height, access, cutting-in and the amount of woodwork involved.
Whole-flat decorating varies widely. A small one-bedroom flat in reasonable condition may be around £1,800 to £3,500, while a larger two-bedroom property with ceilings, walls, doors, frames and repairs can move beyond £4,000. Stain blocking, damp treatment, extensive filling, lead-safe preparation or out-of-hours commercial work will add to the cost.
DIY can work well for a sound bedroom or home office if you have time and patience. Call a professional decorator when paint is peeling widely, stains keep returning, plaster is crumbling, ceilings are high, access is awkward, old gloss may contain lead, or you need a durable finish for a rental or workplace. Kensington Maintenance Services Ltd provides decorating services alongside practical repairs, so we can sort the cause as well as the finish.
If damp, leaks or fittings are involved, the decorating quote may need input from other trades. For example, a ceiling stain below a bathroom may need our plumbing services before repainting, and damaged sockets or light fittings should be checked by a competent electrician rather than painted around. Electrical work in homes must follow the relevant requirements of Part P of the Building Regulations, and any safety concern should be inspected professionally.
Frequently Asked Questions
Q1: How long should interior paint actually last on walls?
In a dry, well-prepared living room or bedroom, interior wall paint should usually last 5 to 7 years. Busy hallways, rented flats and family kitchens may need repainting sooner, often every 2 to 4 years.
Q2: Why is my new paint peeling after only a few months?
The usual causes are damp, dust, grease, old loose paint, no mist coat on new plaster, or the wrong paint for the surface. The failed area should be stripped back and checked before repainting.
Q3: Is expensive paint always worth it?
Not always, but trade-quality paint matched to the room usually lasts better than cheap paint used everywhere. Preparation still matters more than the brand name on the tin.
Q4: Can I paint over mould if I use mould-resistant paint?
No. The mould should be cleaned safely and the cause, usually condensation, poor ventilation or damp, should be dealt with first. Mould-resistant paint helps slow regrowth, but it will not fix the underlying problem.
Q5: When should I call a professional decorator instead of doing it myself?
Call a professional if there is damp, staining, peeling, high ceilings, old lead paint risk, damaged plaster or a finish needed for tenants or customers. These jobs need proper preparation and, where safety is involved, inspection by the right trade.
Interior paint lasts when the surface is sound, dry, clean and matched with the right product for the room. If your paint is failing early, repainting without finding the cause is money wasted. For a proper assessment, a clear price and work carried out by people who deal with London properties every day, you can get a quote from Kensington Maintenance Services Ltd or contact us for professional services.