If your aluminium bifold doors look tired but still open, close and lock properly, professional spraying is usually the smarter move over replacement. It restores a factory-fresh finish, costs a fraction of new doors, and many jobs can be done in a single visit.
- Factory-like finish using specialist primers and sprayed topcoats rather than brush-applied paint
- Lower cost than replacement, often with mobile, on-site spraying that avoids removing the doors
- Colour freedom, including matching to RAL or British Standard references
- The exception: doors with severe corrosion, warped frames or collapsed hardware need replacing, not respraying
Table of Contents
- Why choose professional spraying over replacement
- What a professional spray job actually includes
- How long do sprayed aluminium finishes actually last?
- How do you choose the right sprayer?
- What does aluminium bifold door spraying cost, and how long does it take?
- Why Refinishing Studio fits the brief for aluminium bifold spraying
- An editorial view on the respray-or-replace decision
- Get a quote for your aluminium bifold doors
- Sources
Why choose professional spraying over replacement
Homeowners usually come to spraying for one reason: the doors still work fine, they just look wrong. Fading, discolouration, and flaking of the original factory coating are the most common complaints on ageing aluminium bifolds, and respraying reliably reverses that damage rather than masking it temporarily.
Suppliers and trade sprayers often pitch significant savings compared with a full replacement set, though the real figure on your job depends heavily on door size, number of panels, and site access. Treat that range as a starting point for budgeting, not a promise.
Beyond the price gap, professional spraying brings advantages replacement can't match on the same timescale:
- Minimal disruption — many jobs are completed on-site in a day, with no skip, no builders, no gap in your home's security
- Precise colour matching, including custom shades and standard RAL or BS references
- Single-visit mobile spraying that avoids removing doors from their frames in most cases
Before booking anyone, check what warranty backs the work. A written guarantee tells you far more about a sprayer's confidence in their materials than any sales pitch does.
What a professional spray job actually includes
A proper respray isn't a lick of paint over old aluminium. It's a structured process, and knowing the steps helps you compare quotes properly and spot who's cutting corners.
- Inspection — the sprayer checks for corrosion, damaged seals, and seized or worn hardware before quoting, since these issues affect both price and feasibility.
- Preparation — surfaces get a solvent degrease followed by abrasion or light sanding to key the surface, with glass and hardware carefully masked off.
- Priming — an adhesion promoter or metal primer suited to powder-coated aluminium goes on next; skipping or rushing this step is where DIY jobs usually fail.
- Topcoat application — professional two-pack or polyurethane coatings, or specialist exterior formulations, are sprayed on in multiple thin coats for an even, factory-style finish.
- Curing and reassembly — coatings need time to cure fully, though many professional sprayers report dry-to-touch results within hours even if full hardness takes longer.
- Final inspection — hardware gets reattached and tested, masking removed, and the finish checked for consistency before sign-off.
A written quote should list every one of these stages by name. If a contractor can't tell you what primer or topcoat system they use, that's worth pausing over.
Pro Tip: Ask whether the quote covers two coats as standard. A single coat rarely gives the depth or durability a factory finish needs, and it's an easy corner for a cheaper contractor to cut.
How long do sprayed aluminium finishes actually last?
The gap between a DIY respray and a professional one isn't really about looks on day one. It's about what happens after two winters of UK weather.
Consumer aerosol paints simply don't bond, flex or weather the way industrial coatings do. Two-pack polyurethane systems chemically bond to properly primed aluminium, giving them far better UV resistance and flexibility to cope with the expansion and contraction aluminium undergoes as temperatures shift through the seasons. Aerosol paint, by contrast, sits on the surface rather than bonding with it, which is why it tends to peel and chalk within a couple of years on exterior frames.
Realistically, a well-applied professional coating on properly prepared aluminium should perform for years without significant fading or flaking, provided the frame itself was sound before spraying. A light wipe-down with mild soapy water every few months keeps grime from building up and extends that lifespan further.
On colour and finish, you're not limited to whatever shade the doors came in:
- RAL and British Standard matching for an exact colour reference, useful if you're coordinating with other joinery
- Matt, satin, gloss, and eggshell finish options depending on the look you want
- Custom colours for a genuine departure from the original specification
How do you choose the right sprayer?
Not every trade offering "door spraying" runs the same process, so the questions you ask upfront do most of the vetting for you.
Ask directly:
- What primer and topcoat system do you use, and how many coats are included?
- What are the drying and curing times before the doors can be used normally?
- What warranty comes with the work, and is it written down?
- Can I see photos or examples of similar bifold or aluminium door jobs you've completed?
Trust signals worth checking beyond the answers themselves: a genuine written warranty rather than a verbal promise, a visible portfolio of completed work, local reviews you can actually verify, and confirmation that the crew doing the work isn't subcontracted out.
Pro Tip: If a contractor insists on removing your doors when the job doesn't require it, ask why. Unnecessary removal adds cost, risk of damage in transit, and time you don't need to lose.
Red flags are usually easy to spot once you know what to look for: vague answers about "the paint we use," no warranty in writing, or a fixed price that's noticeably lower than every other quote you've had. Cheap and fast rarely means durable on exterior aluminium.
What does aluminium bifold door spraying cost, and how long does it take?
Pricing varies by door size, panel count, site access, and whether you want a standard colour or a custom match. Complex hardware, multiple bifold sets, or difficult access (upper floors, tight courtyards) all push the price up.
As a rough guide for budgeting purposes:
- Single mobile visit, standard colour — the most cost-effective option for most homeowners with sound, accessible doors
- Multiple doors or complex sets — costs scale with panel count and prep time required
- Custom or specialist colours — typically carries a premium over standard finishes
- Workshop removal jobs — used only where on-site conditions make spraying impractical, and generally takes longer than a mobile visit
For timelines, most on-site mobile spraying jobs on aluminium bifolds are completed within a single day, with the doors usable again once the coating is dry to the touch. Full removal and workshop respraying takes considerably longer, since it involves transport, extended cure time in controlled conditions, and reinstallation.
A proper written quote should break down preparation, priming, topcoat, reassembly and warranty terms as separate line items, not one lump figure.
Why Refinishing Studio fits the brief for aluminium bifold spraying
Everything covered above, the process steps, the warranty question, the portfolio check, maps directly onto how Refinishing Studio operates. The team uses a hand-spray technique built around achieving a factory-standard finish, backed by over 1,000 completed projects across South Wales and a five-year warranty on the work.
That combination answers most of the checklist from the previous section before you even ask:
- Process transparency — the same inspection, prep, primer and topcoat structure outlined above
- Verifiable warranty — five years, in writing, not a verbal assurance
- Track record — over 1,000 projects completed, with a portfolio you can browse before booking
- No subcontractors — the people who quote the job are the people who spray it
If your bifold doors are due a refresh, the simplest next step is sending a few photos and a description of site access to get a proper quote rather than a guess.
| Point | Details |
|---|---|
| Structural soundness first | Spray if frames and hardware work properly; replace if corrosion or hardware failure is severe. |
| Process matters more than price | A quote naming primer, topcoat, coat count and cure time beats a cheaper vague one. |
| Professional coatings outlast DIY paint | Two-pack polyurethane systems bond and flex better than aerosol paint on exterior aluminium. |
| Warranty is the trust signal | A written guarantee, not a verbal promise, separates serious contractors from the rest. |
| Refinishing Studio meets the checklist | Hand-spray technique, five-year warranty, and 1,000+ completed projects across South Wales. |
An editorial view on the respray-or-replace decision
Most advice on this topic focuses too heavily on colour and not enough on the questions that actually protect your money. Anyone can show you a nice "after" photo. Far fewer contractors will tell you unprompted what primer they're using or how many coats are standard, and that gap is where cheap jobs fail within eighteen months.
The conventional wisdom, that spraying is simply the "budget option," undersells what a properly executed job delivers. Done right, with the correct primer and an industrial topcoat, a sprayed finish isn't a compromise. It's a legitimate alternative to replacement, not a stopgap before it.
What I'd prioritise first isn't the price at all. It's the warranty and the process detail behind the quote. A contractor who volunteers both, unprompted, before you even ask, is telling you something about how they work. One who dodges the question is telling you something too.
— Mitchell
Get a quote for your aluminium bifold doors
If your doors are still structurally sound but looking dated, Refinishingstudio's hand-spray service gives you a factory-standard finish without the upheaval or expense of full replacement, and every job across South Wales comes with a five-year warranty as standard. That combination of durability and price is exactly why over 1,000 completed projects have chosen respraying over ripping out doors that still work perfectly well.
Getting started is simple: send a few photos of your bifold doors, describe access to the property, and mention your preferred colour or finish, whether that's a standard shade or a custom RAL match. From there you'll get a proper written quote broken down by preparation, priming, topcoat and warranty, not a vague lump sum. If you're weighing this against replacement first, it's also worth reading how respraying compares with full replacement before deciding. When you're ready, request a quote for your UPVC or aluminium doors and get a firm answer on cost and timeline.
Sources
- Problems with bifold doors | Homewindows
- uPVC & aluminium door spray painting in Kent & London — SprayMyHouse
- Expert spray painting tips for a flawless finish | Arc Energy