Painting Over Gloss Paint: How to Make New Paint Stick

You can paint over gloss paint, but not straight onto it. Gloss is smooth and hard, so new paint has nothing to grip. To paint over gloss paint successfully:

• Check for lead first if the home is older.
• Clean the surface to remove grease and grime.
• Sand lightly to dull the shine.
• Apply a bonding primer.
• Finish with two top coats.

If the old gloss is oil-based and you’re switching to water-based paint, the primer step is essential.

Why New Paint Struggles to Stick to Gloss

Gloss paint is made to be tough, shiny and easy to wipe clean. Those same qualities make it a difficult surface to paint over. A glossy finish is hard and non-porous, so a fresh coat of paint can’t bond into it. Instead, the new paint sits on top like a thin skin.

It might look fine for a few weeks. Over time, everyday knocks, cleaning and temperature changes cause that skin to scratch, chip or peel away in sheets. Proper preparation creates a surface the new paint can grip, which is the difference between a finish that lasts years and one that fails early.

Where You’ll Find Gloss Paint in Sydney Homes

Gloss and semi-gloss enamels are common on surfaces that take a lot of wear:

• Interior doors and door frames
• Skirting boards and architraves
• Window frames and sills
• Kitchen and bathroom cabinets
• Handrails and balustrades
• Exterior doors, fascias and trims

Many older Sydney homes, especially those painted decades ago, have oil-based gloss enamel on their trims. It often yellows over time, which is one of the most common reasons homeowners want it repainted. If you’re updating several rooms at once, our interior house painting Sydney guide explains what a full interior repaint involves.

First, Find Out If the Old Gloss Is Oil-Based or Water-Based

Before choosing a primer, work out what type of paint you’re dealing with. There’s a simple test:

1. Dampen a cotton ball or clean cloth with methylated spirits.
2. Rub it firmly on a hidden section of the painted surface for a few seconds.
3. Check the cloth.

If paint comes off onto the cloth, the surface is water-based (acrylic). If the surface is unaffected, it’s oil-based (enamel).

This matters because water-based paint won’t adhere reliably to oil-based gloss without the right preparation and primer. Getting this step wrong is one of the most common causes of peeling on painted doors and trims.

How to Paint Over Gloss Paint: Step by Step

Step 1: Check for Lead in Older Homes

Homes built before 1970 may have lead-based paint under the newer layers. Sanding lead paint releases toxic dust, so test the paint before any sanding starts. If lead is present, it needs to be handled safely. Our lead paint removal Sydney guide explains the process.

Step 2: Clean and Degrease

Gloss surfaces like doors, handles, cabinets and skirting boards collect grease, fingerprints and grime that stop paint from bonding. Wash them with sugar soap, rinse with clean water and let them dry completely. Kitchen cabinets usually need extra attention because of cooking grease.

Step 3: Repair Any Damage

Fill chips, dents and cracks with a suitable filler, then sand the repairs flush once dry. Scrape back any loose or flaking paint first, because new paint over a failing layer will fail too. Our guide on how to prepare walls before painting covers filling and patching in more detail.

Step 4: Sand to Dull the Shine

Lightly sand the whole surface with fine sandpaper, around 180 to 240 grit. You’re not trying to remove the gloss paint, only to take the shine off and create a slightly rough surface. When you’re finished, the surface should look dull and feel smooth, with no shiny patches left. Wipe away all dust with a damp cloth.

Step 5: Apply a Bonding Primer

A bonding (adhesion) primer grips the old gloss and gives your top coat a surface it can hold onto. If you’re painting water-based paint over oil-based gloss, use a primer made for that job and check the product label to confirm it’s suitable. Allow the full drying time on the tin before recoating.

Step 6: Apply Two Top Coats

Apply your first top coat in thin, even layers, following the grain on timber surfaces. Let it dry fully, sand very lightly between coats if needed, then apply the second coat. Two thinner coats give a smoother, tougher finish than one heavy coat.

Can You Paint Water-Based Paint Over Oil-Based Gloss?

Yes, and many homeowners choose to. Modern water-based enamels dry faster, have less odour and are less prone to yellowing than traditional oil-based enamels, which makes them a popular choice for doors and trims.

The switch only works with thorough preparation. The surface must be cleaned, sanded and sealed with a suitable primer. Painting water-based paint straight onto oil-based gloss is one of the fastest ways to get peeling paint.

Choosing the Finish for Your New Coat

You don’t have to repaint gloss with gloss. After the right preparation, you can apply a satin, semi-gloss or low sheen finish instead.

• Doors, trims and cabinets: semi-gloss or gloss enamel is still the most practical choice, because it stands up to knocks and regular cleaning.
• Living areas: our guide to the best paint finish for living room spaces helps you match the look to how the room is used.
• Wet areas: see the best paint finish for bathrooms for moisture-resistant options.

Common Mistakes When Painting Over Gloss

• Skipping the sanding. Even a quality primer bonds better to a lightly sanded surface.
• Leaving out the primer. Top coats alone rarely hold well on gloss, especially water-based paint over oil-based paint.
• Painting over grease. Kitchen cabinets and door edges near handles are the usual problem areas.
• Rushing the recoat. Painting before the primer or first coat has dried properly traps solvent and weakens the finish.
• Dry sanding old paint without testing for lead. This is a health risk, not just a finish problem.

Exterior Gloss Surfaces Need Extra Care

Exterior doors, window frames and fascias face sun, rain and salt air, so the finish has to be tougher. The same steps apply, but use exterior-grade primers and paints. Sanding is especially important on surfaces where the old gloss has chalked or weathered. If the whole outside of your home needs attention, our exterior house painting Sydney guide covers the full process.

When to Call a Professional

Painting over gloss is manageable on a single door. It becomes a much bigger job across a whole home of skirting boards, architraves, windows and cabinets. It’s also a job where the preparation takes longer than the painting, and where shortcuts show up quickly as chips and peeling.

Quality Painting Sydney handles the full process: testing the existing paint, safe preparation, priming and a smooth, durable finish. If you’re planning a larger project, our house painting cost Sydney guide explains what affects the scope of the job, and our preparing house for painting guide shows you how to get ready.