There is a moment that most DIY decorators know well. The furniture is draped in dust sheets, the first tin of paint is open, and the room looks as though it will be all done by lunchtime. Then, somewhere around the second wall, the brush marks appear. Or the roller leaves a stippled texture across what should be a smooth surface. Or the finish that looked flawless when wet looks streaky and dull once it dries.
Slapping on a few more coats in the hopes of disguising a mistake will not get you a truly professional paint finish. It requires the right preparation, the right products for each surface, and a working knowledge of how different finishes behave. These painting tips cover the essentials, from filling hairline cracks to choosing between eggshell and satin, so that whether you take it on yourself or hand it over to a professional, you know exactly what a good job should look like.
Why Preparation Makes or Breaks the Final Result
Professional decorators spend a significant portion of their time on preparation, and it shows in the result. You can use the most expensive paint on the market, but if the surface underneath is poorly prepared, the finish will always fall short.
Start by washing the walls. A solution of sugar soap and warm water removes grease, dust and residue that would otherwise prevent paint from bonding properly. This step is especially important in kitchens and bathrooms, and around light switches where hands touch the wall regularly.
Once the walls are clean and dry, inspect them carefully. Fill small holes and dents with a ready-mixed filler, allow it to dry fully, then sand it smooth with fine-grit sandpaper. For hairline cracks, a flexible filler works better than a rigid one, as it can move slightly with the building without cracking again. The Polycell Polyfilla guide can be a useful reference if you are new to this stage.
Sand any glossy or previously painted surfaces lightly before applying new paint. This gives the new coat something to grip. Skipping this step is one of the most common reasons paint peels or flakes within a year.
Finally, apply a coat of primer or mist coat wherever you are painting bare plaster. New plaster is highly porous and will absorb a full-strength emulsion unevenly, leaving patches and a spongy texture. A diluted first coat — typically ten parts paint to one part water — seals the surface and gives subsequent coats a far better result.
Choosing the Best Paint Finish for Each Room
Paint finishes are not interchangeable, and using the wrong sheen level in the wrong space is a surprisingly common mistake. Here is a straightforward breakdown.
Matt emulsion is ideal for ceilings and low-traffic walls. It absorbs light rather than reflecting it, which means it hides surface imperfections well. The trade-off is that it is not particularly easy to wipe clean, so it is less suited to hallways, children’s rooms or kitchens.
Eggshell has a subtle sheen and is much more durable than matt. It works well on walls in living rooms, bedrooms and hallways, and it can be wiped down without losing its finish. On woodwork such as skirting boards and door frames, eggshell gives a refined, contemporary look that has largely replaced high-gloss in modern interiors.
Satin sits between eggshell and gloss in terms of sheen. It is a popular choice for woodwork and is slightly more reflective than eggshell. Both are good options; the choice often comes down to personal preference and lighting conditions in the room.
Gloss is the most hardwearing of the sheens and the most reflective. It is well suited to surfaces that take a lot of punishment, such as interior doors and window frames, though it will highlight any surface imperfections rather than conceal them.
Bathroom and kitchen paints are specifically formulated to resist moisture and mould. Using a standard emulsion in these spaces may look fine initially, but it is very likely to peel or discolour within a year or two.
How to Avoid Roller Lines and Brush Marks
Roller lines and brush marks are the telltale signs of an amateur finish, and they are almost always caused by one of three things: the wrong tools, the wrong technique, or working too quickly.
For walls, use a medium-pile roller sleeve that is typically nine to twelve millimetres. Apply paint in a loose W or M shape before filling in, rather than working in straight lines from top to bottom. Reload the roller regularly, and always finish each section with light, long vertical strokes while the paint is still wet. This technique, sometimes called laying off, smooths out the texture left by the roller.
Avoid pressing too hard. A heavily loaded roller dragged across a wall will deposit far more paint at the edges of the sleeve than in the middle, which is what creates those tell-tale lines at the edge of each pass.
When cutting in with a brush around edges, skirting boards and ceilings, use a good-quality angled brush and work in smooth, unhurried strokes. Cheap brushes lose bristles and leave ridges: they’re definitely not worth it. If you are using a water-based paint, a synthetic brush is the right choice. For oil-based paints, a natural-bristle brush performs better.
Allow each coat to dry fully before applying the next. Running a second coat over paint that is not yet dry disturbs the surface, pulls fibres from the roller, and can leave a patchy, uneven result.
When to Call in a Professional
There is nothing wrong with knowing your limits. Many of the jobs that look straightforward are genuinely difficult to carry out to a high standard if you don’t have the experience. Projects such as painting a stairwell, reaching a perfect finish on high-gloss woodwork, or working with period plasterwork. They all need careful attention.
A professional decorator will not simply paint faster than the average DIY painter. They’ll spot the hairline crack that runs from a doorframe to the ceiling and realise it’s a sign of structural movement. They’ll know which primer to use on bare metal radiators, and which finish will hold up in a bathroom that steams up every single morning. They’ll also protect your floors and furniture properly, and leave the space clean.
If you are in Kent, East or West Sussex, or South London, and your project has grown beyond what you envisaged when you opened that first tin, get in touch with the team at Superior Decorating. A no-obligation quote costs nothing, and the difference between a good finish and a great one is often less than you might expect.
Superior Decorating Ltd provides residential and commercial painting and decorating services across Sussex, Surrey, Kent, and South London. View our services or contact us to discuss your project.
