Common House Painting Mistakes Adelaide Homeowners Should Avoid

exterior painters adelaide painting your home can make a noticeable difference to its appearance, but a good result depends on much more than choosing a colour. Many problems that appear after a house has been painted can be traced back to decisions made before the first coat was applied.

For Adelaide homeowners, factors such as strong summer conditions, older housing stock, surface deterioration and inadequate preparation can all affect a painting project. Choosing paint without considering the surface, skipping preparation or hiring a contractor based only on the cheapest quote can create problems later.

Knowing the common house painting mistakes Adelaide homeowners should avoid can help you plan the work properly, compare painting contractors and achieve a finish that is appropriate for your property.

1. Choosing a Painter Based Only on the Cheapest Quote

A low painting quote can be attractive, particularly when a whole house needs repainting. However, the cheapest price does not necessarily represent the same scope of work as a more detailed quote.

One painter may include extensive sanding, filling, priming and two finish coats, while another may allow for minimal preparation and fewer inclusions.

Before comparing prices, check:

• Which rooms or exterior areas are included
• Surface preparation
• Repairs and patching
• Primer or undercoat
• Number of coats
• Paint products
• Access equipment
• Clean-up
• Waste removal
• Exclusions
• Payment terms

South Australian Consumer and Business Services recommends consumers compare quotes and check that contractors are appropriately licensed for the work they undertake.

A detailed quote makes it much easier to understand what you are actually paying for.

2. Skipping Proper Surface Preparation

One of the biggest painting mistakes is treating preparation as an optional extra.

Paint needs a suitable surface to adhere to. Dirt, grease, loose coatings, chalky paint, mould and poorly repaired areas can affect the final result.

Depending on the existing surface, preparation may include cleaning, scraping, sanding, filling imperfections and applying an appropriate primer or sealer.

Paint manufacturer guidance also highlights the need to remove loose, peeling or chalky coatings and prepare repaired or uneven areas before painting.

Why preparation matters

Painting over a damaged surface may temporarily hide the problem, but it does not necessarily fix it.

For example, applying new paint over peeling paint can leave visible edges and may lead to further peeling. Painting over dirty or greasy surfaces can also interfere with adhesion.

If your Adelaide home has cracks, flaking paint, water stains or damaged timber, ask the painter how these issues will be addressed before painting begins.

3. Ignoring Mould, Moisture and Water Damage

A fresh coat of paint is not a substitute for solving a moisture problem.

If a wall or ceiling has recurring mould, bubbling paint, staining or deterioration, find out what is causing it first. Possible causes can include leaks, condensation, poor ventilation or water entering through an exterior area.

Painting over the symptom without addressing the underlying problem can result in the new finish deteriorating again.

The same principle applies externally. If timber, masonry or other surfaces have been affected by water, the substrate may require attention before a coating system is applied.

4. Choosing Paint Without Considering the Surface

Not every paint product is suitable for every part of a house.

Interior walls, ceilings, doors, trims and exterior surfaces can have different requirements. The existing coating and substrate also influence preparation and product selection.

For example, a product designed for interior walls should not simply be assumed to be suitable for an exposed exterior surface.

When obtaining quotes, ask the painter to identify the proposed product or product range and where it will be used.

This makes it easier to compare painting quotes and avoids vague descriptions such as “premium paint” without further information.

5. Choosing a Colour Without Testing It Properly

A colour that looks good on a small colour card can look very different across an entire room or exterior wall.

Lighting, surrounding colours, flooring and the orientation of the room can all affect how a colour appears.

For exterior painting, the surrounding roof, brickwork, paving and landscaping can also influence the overall appearance.

Before committing to a large quantity of paint, test shortlisted colours on the actual surface where practical. Look at the sample at different times of day rather than relying on artificial lighting alone.

This is particularly useful when choosing neutral whites, greys and other subtle colours where small differences can be noticeable.

6. Painting Over Old Lead-Based Paint Without Taking Precautions

This is a particularly important consideration for owners of older Adelaide homes.

SA Health states that homes built before the mid-1970s, particularly those built before 1940, are more likely to contain lead-based paint. However, the age of a property alone does not confirm whether lead paint is present. Lead-based coatings can also remain under newer layers of paint.

The problem becomes more significant when old coatings are disturbed through sanding, scraping or other preparation methods because lead-containing dust or flakes can be generated.

If you suspect an older coating may contain lead, do not casually start sanding or stripping it yourself.

SA Health recommends lead-aware practices and, where lead paint removal is involved, using a contractor experienced in lead paint removal.

7. Doing Too Much DIY Preparation

Preparing a room before painters arrive can save time, but homeowners should be careful about taking on work that creates additional risks.

Moving furniture, removing wall decorations and clearing access are generally straightforward preparation tasks.

More complex work, such as extensive sanding, stripping deteriorated coatings or repairing damaged surfaces, may require appropriate equipment, knowledge and safety precautions.

This is particularly relevant when dealing with older paint systems or suspected lead paint.

Ask the painter what preparation they expect you to handle and what they will complete themselves. This prevents confusion about the condition of the property when the job begins.

8. Painting Without Considering Adelaide’s Weather

Exterior painting requires suitable weather and surface conditions.

Adelaide’s climate includes hot, dry summer conditions as well as cooler and wetter periods. Exterior surfaces can also experience significant exposure to sunlight and weather over time.

Rather than choosing an exterior painting date simply because it is convenient, discuss the timing with your painter.

The condition of the surface, the particular coating being used and the weather forecast can all influence when exterior work should proceed.

A professional painter should be able to explain any weather-related limitations affecting the proposed schedule.

9. Forgetting About Repairs Before Painting

Painting can improve the appearance of a wall, but it does not automatically solve structural or substrate problems.

Common issues that may need attention before painting include:

• Cracked plaster
• Damaged render
• Rotten timber
• Loose surfaces
• Significant holes
• Water damage
• Deteriorated sealants
• Peeling or failed previous coatings

Ask whether repairs are included in the painting quote or treated as additional work.

If the painter discovers a problem after preparation begins, request a written variation explaining the additional work and cost before authorising it.

10. Hiring an Unlicensed Contractor

For building work in South Australia, licensing requirements apply to contractors, and the licence must cover the type of work being contracted.

CBS specifically lists internal and external surface preparation and painting within the painting and decorating scope of building work.

Homeowners can use the CBS licensing register to check whether a person or business holds an appropriate licence.

This is a simple step to take before signing an agreement or making significant payments.

South Australia has also introduced stronger compliance measures for the building industry in 2026, including increased penalties for certain unlicensed building work and other breaches.

The exact legal requirements can depend on the nature, scope and value of the project, so homeowners should check the current rules for their particular job.

11. Not Asking What Is Excluded

A painting quote can appear comprehensive while still leaving important work outside the agreed scope.

Potential exclusions might include major repairs, extensive mould treatment, specialist access equipment, furniture moving or treatment of damaged substrates.

Ask one simple question:

“What isn’t included in this price?”

The answer can be just as useful as the list of inclusions.

It is also worth asking what circumstances could cause the final price to change. This gives you a clearer idea of potential additional costs before work begins.

12. Rushing the Final Inspection

When the painters finish, do not simply make the final payment and move on.

Walk through the property and compare the completed work with the agreed scope.

Look at:

• Coverage
• Edges and corners
• Trim and door finishes
• Areas around fixtures
• Consistency of the finish
• Agreed repairs
• Clean-up
• Any areas specifically identified in the quote

If you notice an issue, raise it with the contractor promptly and refer back to the written scope or contract.

Common Mistakes to Avoid

The most common painting problems usually start before painting begins. Avoid these mistakes by:

• Choosing a painter solely because their quote is cheapest
• Skipping surface preparation
• Painting over moisture or mould problems
• Using an unsuitable product
• Ignoring old or potentially lead-based coatings
• Leaving repairs until after painting
• Failing to clarify exclusions
• Not checking licensing requirements
• Agreeing to additional work without documenting the cost
• Rushing the final inspection

A little planning at the beginning can prevent much more expensive problems later.

Frequently Asked Questions

How do I choose a house painter in Adelaide?

Start by comparing several detailed quotes rather than just the total price. Check the scope, preparation, products, exclusions, timeframe, payment terms and applicable licence details.

How important is preparation before painting?

Very important. Cleaning, repairing, sanding and priming where appropriate can affect how well the new coating adheres and how the finished surface looks.

Should I paint over peeling paint?

Loose and peeling coatings generally need to be dealt with as part of proper preparation rather than simply covered with another coat. If the existing paint may contain lead, use appropriate lead-aware procedures.

Is it safe to sand old paint myself?

Not necessarily. Older homes may contain lead-based paint, and sanding can generate hazardous dust. If lead paint is suspected, obtain appropriate advice before disturbing the coating.

Why does house painting cost more than expected?

Additional preparation, repairs, difficult access, changes to the scope or unsuitable existing surfaces can affect the cost. A detailed quote should identify exclusions and explain how variations are handled.

Should I get multiple painting quotes?

Yes. Comparing multiple written quotes can help you understand the typical scope and identify significant differences in preparation, materials and inclusions.

Final Thoughts

Avoiding common house painting mistakes can make the entire project easier to manage and can help you get a more suitable finish for your Adelaide home.

The most useful approach is to think beyond colour and price. Check the condition of the surfaces, understand the preparation required, choose products appropriate for the job, consider the age of the property and make sure the contractor’s scope is clearly documented.

If you are planning to repaint your Adelaide home, start by arranging an inspection and asking for a detailed written quote. Comparing the scope of work before comparing the price will give you a much clearer basis for choosing a painter.