What Our Surface Prep Advice Covers
We look at the condition of the wall, ceiling, plaster, wood or metal first, then advise the prep steps that suit the surface and the paint system you plan to use. That includes which filler to use, where a bonding primer is needed, how much sanding is enough, and when a surface needs washing down before anything else. In coastal areas like Gqeberha and Cape Town, salt and moisture can affect adhesion so we also check for powdery patches, mould stains and old chalky paint.
The advice is practical and item by item. You will know whether a hairline crack needs a fine filler, a deeper repair compound or mesh tape, and whether the job can move straight to primer or needs a full seal coat first. We also guide you on prepping around skirtings, window frames and patch repairs so the finish looks even, not spotty or patchy.
- Filler selection for cracks, dents and screw holes
- Primer advice for new plaster, plasterboard, wood, MDF and metal
- Sanding grit guidance for each stage
- Cleaning and degreasing advice for kitchens, doors and handrails
- Problem area checks for damp, old gloss and flaking paint
How We Assess A Surface Before Paint Goes On
We start by asking what the substrate is and what paint is already on it, if any. A new plaster wall needs a very different prep routine to an old rental property in Sandton with layered paint and patch repairs. We also ask about the room use, because a bathroom, passage or exterior wall exposed to rain needs a tougher prep plan than a bedroom or office partition.
From there we guide the sequence. If the surface is dusty or friable, that must be fixed before filler. If there are shiny old coats, the surface may need sanding to a dull key and sometimes a suitable bonding primer. If there are water marks or tannin bleed on timber, spot treatment comes before the finishing coat. It is the sort of detail that stops peeling later, and saves a second round of labour.
- Identify substrate type and existing coating
- Check for damp, dust, chalking and loose paint
- Map repairs and patch sizes
- Confirm room conditions and exposure to heat, steam or weather
- Set the prep order before paint is mixed or tinted
Fillers, Primers And Sanding Grains We Commonly Recommend
For small interior cracks and nail holes we usually point customers toward a fine surface filler that dries hard and sands smooth. For deeper plaster repairs, a stronger repair compound may be needed, especially where corners have chipped or the wall has been chased for wiring. On timber, gaps and knots need different treatment again, and on metal the key issue is rust removal plus a primer suited to the substrate.
Sanding is just as important as the filler itself. In most repaint jobs we suggest starting with a medium grit in the 120 to 150 range, then finishing finer around 180 to 220 before primer or topcoat. For heavily glossed areas, a slightly coarser initial sand may be needed to break the sheen. Too fine too soon does not give enough key, too rough leaves scratches that show through.
- Fine filler for hairline cracks and pinholes
- Repair compound for deeper wall defects
- High build filler for wider surface damage
- 120 to 150 grit for initial sanding on most repaints
- 180 to 220 grit for final smoothing before coating
Prep Advice For Coastal, Interior And High-Wear Areas
Gqeberha homes close to the coast often show early rust on trims, damp marks on north facing walls and salt residue around windows. In those cases prep needs extra care, with cleaning, rust treatment and the right primer before any finish paint. In Cape Town, many customers deal with humidity in bathrooms and kitchens, while in Joburg the problem is often dust and fine surface contamination from open sites or road exposure. The prep advice changes with the location because the failure points are not the same.
For high-wear areas like passages, stairwells and shop fronts, we normally recommend tougher cleaning before sanding and a primer that helps the topcoat grip under regular handling. Exterior walls need sound plaster, sealed repairs and weather aware timing. If rain is expected within the drying window, we will tell you to wait, because applying paint too early can cause patch marks or poor cure. On many projects that one day of patience saves a repaint later.
Turnaround, Pricing And When To Book
Prep advice is available in branch or from photos you send through, with guidance based on the surface, coating and scope of the job. Larger trade jobs, body corporate work or site visits may take a bit longer if we need to review multiple surfaces, but we keep the process straightforward. If you are planning a repaint for a contractor crew, we can help you map out the prep sequence so the team knows what must happen before paint delivery.
Our pricing approach is practical. Basic advice on fillers, primers and sanding steps is generally tied to the products you buy, while more detailed trade support, bulk planning or repaint troubleshooting is quoted according to the size of the job and the number of areas involved. We will not push unnecessary products. If a wall only needs patching and spot primer, that is what we will say, not a full system for the sake of it.
- Guidance for straightforward in-branch queries
- Photo based advice for remote customers and contractors
- Quoted support for larger sites and multiple rooms
- Product-linked advice where possible to keep costs down
Maintenance Intervals And Prep Checks Before Repainting
Good prep also helps you plan the next repaint cycle. Interior walls in normal use can often go 5 to 7 years before they need a full refresh, but passages, rental units and commercial spaces may need attention sooner. Exterior paint in strong sun or coastal air should be checked every 2 to 4 years for chalking, cracking or open joints. If you catch the damage early, the prep work is lighter and cheaper.
Before repainting, look for dull patches, hairline cracks, blistering, peeling around damp zones and rust on gates or railings. If those signs appear, contact us before you start buying buckets of paint. We can tell you whether a washdown, light sand, spot filler or full surface repair is needed. It is easier to fix a small failure now than scrape back a whole wall later, especially when time is tight and the site is already occupied.
Key facts
| Service area | Korsten Gqeberha, Walmer, Newton Park, Sandton, Randburg, Bellville |
|---|---|
| Typical turnaround | Advice for simple queries, with quoted details for larger sites |
| Surface types | Plaster, plasterboard, timber, MDF, metal and previously painted surfaces |
| Prep items covered | Fillers, primers, sanding, cleaning, crack repair and spot treatment |
| Best for | DIY repainting, contractor jobs, rentals, shops and offices |
| Contact | Contact form |
