Painting a kitchen ceiling that has grease buildup is absolutely a DIY-friendly job, but the preparation is everything. Skip the cleaning and priming steps and your fresh coat of paint will bubble, peel, or refuse to stick within months. Follow the process below and you'll get a durable, washable finish that stands up to the steam and cooking fumes of a busy Kiwi kitchen.
Why Grease Is Such a Problem for Paint
Kitchen ceilings collect an invisible film of airborne grease, cooking oils, and moisture over time — especially above the hob or rangehood area. Standard paint is water-based and simply cannot bond to an oily surface. Even if it looks fine when wet, it will lift or peel once it dries and cures. The good news is that with the right degreaser and a quality primer, you can get a rock-solid result.
What You'll Need
- Sugar soap or a dedicated degreaser (available at Bunnings or Mitre 10)
- Warm water and a bucket
- Sponges, microfibre cloths, and rubber gloves
- Drop sheets and painter's tape
- A stain-blocking primer (oil-based or shellac-based)
- Quality ceiling paint — low-sheen or flat finish
- Roller frame, roller covers (10–12 mm nap for smooth ceilings), and an angled brush
- Safety glasses and a dust mask
- A sturdy stepladder
Step 1 — Protect the Room
Lay drop sheets over benchtops, appliances, and the floor. Tape off the tops of walls and any light fittings. Switch off the power at the switchboard to any ceiling lights you're working near — never work around live fittings.
Step 2 — Degrease Thoroughly
This is the most important step. Mix sugar soap with warm water according to the packet directions, or use a purpose-made kitchen degreaser. Working in sections:
- Apply the solution generously with a sponge.
- Scrub in circular motions, paying extra attention to the area directly above the hob.
- Rinse with clean warm water and a fresh cloth.
- Repeat if the water still looks oily or yellow after the first pass.
Allow the ceiling to dry completely — at least 24 hours in a well-ventilated space. Open windows or run a fan to speed this up. New Zealand's humid climate (particularly in Auckland and coastal areas) means moisture can linger longer than you'd expect.
Step 3 — Check for Stains and Damage
Once dry, inspect the ceiling under good lighting. Look for:
- Yellow or brown grease stains that didn't wash off
- Flaking or peeling existing paint
- Water stains from any past leaks
- Cracks or holes in the plasterboard
Scrape away any loose paint with a scraper. Fill small cracks or holes with a suitable filler and sand smooth once dry. If you have significant plasterboard damage, check GIB's repair guides for the correct approach.
Step 4 — Apply a Stain-Blocking Primer
This step is non-negotiable if you have visible grease or stain marks. A standard water-based primer will not seal grease — you need a stain-blocking primer, either:
- Oil-based primer (very effective, but requires mineral spirits for clean-up and has strong fumes — ventilate well)
- Shellac-based primer (fast-drying, excellent stain blocking, also requires good ventilation)
Brands like Resene and Dulux both offer stain-blocking primer products — ask at your local trade store or paint shop for their current recommendation for kitchen ceilings. Apply one even coat with a roller, cutting in around the edges with a brush. Allow to dry fully per the manufacturer's instructions.
If the entire ceiling is in good condition and only lightly soiled (and you've degreased thoroughly), a quality water-based primer-sealer may be sufficient — check with your paint supplier.
Step 5 — Apply Your Ceiling Paint
Choose a low-sheen or flat ceiling paint with a washable, moisture-resistant formulation — ideal for kitchens. Wattyl, Resene, and Dulux all offer ceiling paints suited to higher-humidity areas. White or off-white shades are traditional for ceilings and help reflect light in what is often a darker space.
Application tips:
- Cut in around the edges and light fittings with an angled brush first.
- Roll in one direction, then lightly cross-roll for an even finish.
- Apply two coats, allowing full drying time between coats as per the tin.
- Maintain good ventilation throughout.
Step 6 — Ventilation Going Forward
To slow future grease buildup, make sure your rangehood is working properly and vented to the outside (not just recirculating). BRANZ has useful guidance on kitchen ventilation and moisture management in NZ homes.
When to Call a Professional
Consider hiring a qualified painter if:
- The ceiling has extensive peeling, multiple layers of old paint, or significant water damage.
- You're not comfortable working at height on a ladder for extended periods.
- The ceiling is textured (e.g., stipple or acoustic tile) and you're unsure how to handle it.
- You need electrical work done around ceiling fittings — this is restricted electrical work and must be carried out by a registered electrician. Check the Electrical Workers Registration Board (EWRB) to verify a sparky's licence.
A professional painter will have the right equipment, commercial-grade products, and experience to get a flawless result efficiently. You can find qualified local painters on tradedirectory.co.nz.