Spray Painting Cabinetry and Joinery in a London Renovation

The finish on a painted kitchen, wardrobe, or bespoke joinery installation is determined largely by how the paint was applied. Spray-finished joinery — painted in a controlled environment using HVLP spray equipment — achieves a quality that brush and roller application cannot match, regardless of how skilled the decorator.

Here is what spray painting involves and when it is the right choice.

Why spray finish is different

Paint applied by brush leaves brush marks — fine lines in the wet paint that become visible when the paint dries, particularly in raking light. A skilled decorator reduces these marks significantly with good brushwork and a fine-quality brush, but cannot eliminate them entirely on flat panel surfaces.

Paint applied by spray gun is atomised into very fine particles that land on the surface without any mechanical contact. The result — applied correctly, in the right conditions, with suitable paint viscosity — is a perfectly flat, even film with no brush marks and a very smooth surface.

The difference is visible. A spray-finished kitchen door in a deep colour, seen in strong side-light, reads as a smooth, glass-like surface. The equivalent brush-finished door will show the texture of the paint film. In a high-specification renovation, this difference is not acceptable.

Spray finishing in situ vs factory spray

Joinery can be spray-finished in two ways:

Factory spray (off-site): The joinery is spray-finished in a controlled environment at the manufacturer's workshop, before delivery to site. This is the highest-quality option — a spray booth with filtered air, temperature-controlled environment, and professional spray finishing equipment produces a very consistent result. The risk is damage during delivery and installation; site touch-ups to factory-sprayed joinery are harder to blend invisibly than in a continuous spray programme.

On-site spray: A specialist spray painter visits site, masks off the entire room, and spray-finishes the joinery in situ. This requires very thorough masking to protect finished surfaces (floor, windows, hardware) from overspray. The environmental conditions are less controlled than a factory booth. The result is still significantly better than brush finishing.

For the highest specification work — cabinetry in a dark or strongly saturated colour, joinery that must be absolutely flawless — factory spray is preferred. For large installations where factory finishing is impractical, on-site spray by a specialist is appropriate.

Which joinery benefits most

Kitchens: The kitchen cabinet faces, end panels, and island cladding are the primary candidates. Flat-fronted (shaker or handleless) door styles show spray quality most clearly. Raised panel doors with complex mouldings show spray quality less dramatically — the moulded profiles draw the eye away from surface texture.

Built-in wardrobes and dressing rooms: As for kitchens — flat panel doors in particular.

Bookcases and library joinery: The exposed face of shelving, carcass panels, and pelmet rails benefit from spray.

Internal doors, architraves, and skirtings: These can be spray-finished by an on-site spray painter. The result is noticeably better than brush-finished joinery on flat doors; on heavily moulded period profiles, the quality difference is smaller.

Paint products for spray finishing

Not all paints spray well. The key parameters are viscosity (which must be adjusted for the spray system and tip) and formulation (paints designed for spray application tend to lay flatter than brush-formulated paints).

For cabinetry and joinery: - Acrylic polyurethane (water-based 2K): The current standard for high-quality spray-finished joinery. Very hard, low VOC, fast reapply time, excellent colour stability. Used by most quality kitchen and joinery manufacturers. - Solvent-based 2K polyurethane: Harder and more durable than water-based equivalents; longer dry times; higher VOC. Preferred for some commercial applications and for very high-durability requirements. - Premium emulsion (Farrow & Ball, Little Greene) for spray application: Possible but requires skilled adjustment of viscosity. The chalky matte finishes favoured for interior walls are not ideal for cabinetry — they lack durability.

The preparation requirement

Spray finishing reveals surface imperfections more clearly than brush application, not less. A surface with filled repairs, slight grain raise, or sanding scratches will be more visible under a sprayed film than under a brushed one.

The preparation sequence before spray finishing of MDF cabinetry: 1. Sanding (120 grit, then 180 grit) 2. Sealing primer coat (spray-applied) 3. Flatting (hand-sanding or machine-sanding the primer) 4. Full prime coat (spray-applied) 5. Flatting 6. First colour coat 7. Flatting 8. Second or third colour coat

Five or more passes over the surface. Cutting this sequence produces a result that shows it.

Cost comparison

Spray painting commands a premium over brush painting. For a kitchen with 20–25 door faces: - Brush painting (on-site by decorator): £800–1,500 for doors and carcasses - On-site spray finishing by specialist: £1,500–3,000 - Factory spray (included in kitchen manufacturing): typically absorbed into kitchen pricing at the quality end

The premium for spray over brush on a £30,000 kitchen is approximately 3–5% of the kitchen cost. For a finish that will be seen daily for 15–20 years, this is not a saving worth making.

ASAAN's approach

ASAAN specifies spray finishing as standard for all bespoke joinery and kitchen installations in our renovation projects. We work with both off-site factory finishers and specialist on-site spray painters depending on the scope and specification of each project.

If you are planning a renovation that includes painted joinery, contact us to discuss finish specification.