If you’re getting a room ready for painting, it’s tempting to tackle the plastering yourself. Some prep jobs are well within reach for a careful homeowner, but plastering is one of those trades where the finish is only as good as the preparation underneath.
In Auckland homes, especially older villas, bungalows and renovated properties, we often see DIY patching that looks fine at first glance but shows every ripple, joint line and sanding mark once the paint goes on.
What DIY plastering can cover
There are a few plastering and prep jobs many homeowners can manage if they are patient, methodical and comfortable with basic tools. Small nail holes, picture-hook marks, light scuffs and tiny dents are usually straightforward to fill and sand.
For these smaller repairs, the goal is to build confidence without overreaching. A clean hole, a suitable filler, light sanding and a proper dust-off can make a big difference before painting.
- small nail holes and minor dents
- light surface scratches
- gaps around trim that need a neat, paintable fill
- simple touch-ups in low-visibility areas
What is best left to a plasterer
Once the job involves larger areas, cracked gib, water damage, uneven walls or ceiling joints, DIY quickly becomes risky. These repairs need the right products, drying time and sanding technique to avoid visible patches after painting.
A lot of homeowners also underestimate how much skill is needed to match existing texture, straighten a wavy surface or make a repair disappear under strong light. In Auckland homes with lots of natural light, poor stopping is often obvious the moment the sun hits it.
Jobs best left to a plasterer include more than just major damage. Anything affecting the wall’s shape, strength or finish is usually worth handing over.
- cracks that keep reopening
- water-damaged plaster or gib
- large holes and impact damage
- new plasterboard joints and stopping
- ceiling repairs, especially overhead
The real DIY risk: sanding, dust and paint finish
A lot of DIY plaster repairs fail not because the filler is wrong, but because the sanding and feathering are not done well enough. If the edges are too sharp, the patch will show after painting. If the repair is over-sanded, you can create dips that are hard to hide.
Dust control matters too. Fine plaster dust can settle on skirting boards, floors and trim, then affect paint adhesion and the final sheen. Good prep means vacuuming, wiping down surfaces and priming repaired areas before any topcoat goes on.
If you are preparing walls for a premium finish, the standard is unforgiving. A quick patch may be fine in a rental, but in a high-end Auckland home, you want the surface to look even in daylight and artificial light alike.
- sand lightly and feather the edges
- prime repaired spots before painting
- remove all dust before coatings go on
- check repairs with side lighting before you paint
When to call Steve
If you are unsure whether a repair is suitable for DIY, it is worth getting advice before you start. Steve is a Kiwi and a trade-qualified painter who can assess the damage, tell you what can be safely fixed by a homeowner, and take care of the jobs that need a professional finish.
That is especially helpful if you are in a premium Auckland suburb and want the walls to look crisp, clean and ready for painting without costly rework. Steve can help with plaster repairs, surface preparation and advice on the right order of work so the finish lasts.
Frequently Asked Questions
Can I fill small holes in the wall myself before painting?
Yes, small holes and light dents are usually manageable DIY jobs if you use the right filler, sand carefully and prime the repair before painting.
How do I know if a crack needs a plasterer?
If the crack is wide, keeps coming back, runs through a ceiling, or seems linked to movement or water damage, it is best to get a plasterer or Steve to assess it.
Do I need to prime plaster repairs before painting?
Yes. Fresh filler or plaster usually needs priming so the paint goes on evenly and does not flash or soak in differently from the surrounding wall.
Need a hand with your project?
Happy to tackle some of it yourself? Great — but for anything you’d rather leave to a professional, Steve Lunjevich is a Kiwi and a trade-qualified painter with 20+ years’ experience. Call or email for honest advice or a free, no-obligation quote.