
Flat-Pack vs Rigid Kitchen Units: Which Is Better?
Flat-pack or rigid kitchen units? Compare strength, cost, fitting time and access up a Glasgow stair, plus which brands sell which. Assembly £25 a cabinet.
Kitchen Fitter Glasgow is an independent fitter for Wren, B&Q, Wickes and Magnet kitchens across Glasgow and Renfrewshire. Whether your kitchen arrives rigid or flat-packed, we fit it from £795 for up to 8 units, with flat-pack assembly at £25 per cabinet only where it's needed. You get one fixed written quote for the whole job, from a time-served joiner based in Johnstone, with no VAT added and a 2-year written guarantee on the fitting.

Wren, B&Q, Wickes and Magnet all offer fitting through their own installation services, and for some homeowners that's the right choice. For others, the way retailer fitting is quoted and booked causes problems that are worth knowing about before you sign.
Retailer installation quotes often cover the units, worktops and sink, while the plumbing, electrical work, gas connections, plastering and tiling are quoted separately or left for you to arrange. Wren, for example, describes its own installation as a dry-fit service. The first figure you see may not be the figure you end up paying.
Retailer installations are booked through the retailer's own schedule. If your preferred date isn't available, or the delivery moves, your fitting date can move with it, and you have little say in when the work happens.
With a retailer service, the fitter is appointed for you. You may not meet them until the first morning, and if you have a question, you may need to go through the retailer rather than speak to the person in your kitchen.
None of this means a retailer service is a bad choice. But an incomplete quote, a moving start date or a fitter you can't reach directly can turn a straightforward kitchen into a frustrating few weeks.
We fit retailer kitchens as an independent fitter, so the quote, the date and the person fitting your kitchen are all agreed directly with you.
Each retailer's kitchens arrive and fit a little differently, and some retailers sell both flat-pack and rigid ranges. This is what to expect from the brands we're asked to fit most.
| Retailer | How it usually arrives | What to know |
|---|---|---|
| Wren | Check your order confirmation for how your range is supplied | Wren lists using your own fitter as one of its installation options. Its Glasgow showroom is at Great Western Road Retail Park |
| B&Q | Many ranges are flat-pack; check your order | B&Q sells its GoodHome kitchen ranges and offers its own fitting service; we're an independent alternative |
| Wickes | Wickes has sold both flat-pack and ready-assembled ranges | The range name on your order tells us which you've got |
| Magnet | Magnet's best-selling option is factory-assembled with rigid cabinets; ready-to-assemble options also exist | Magnet sells supply-only, so you can choose your own fitter |
| Homebase and others | Varies by range | Send us the order and we'll confirm |
If you're not sure what you've ordered, send us the order confirmation and we'll tell you before we quote.
Fitting a retailer kitchen costs from £795 with us for up to 8 units, and most 9 to 15 unit kitchens cost £1,250 to £2,200, plus assembly if your range is flat-pack. Prices were checked in November 2026, and there's no VAT on top.
| Kitchen | Fitting price | Flat-pack assembly | Time on site |
|---|---|---|---|
| Small, up to 8 units | £795 to £1,250 | £25 per cabinet, if flat-pack | 2 to 5 days |
| Standard, 9 to 15 units | £1,250 to £2,200 | £25 per cabinet, if flat-pack | 3 to 7 days |
| Large, 16+ units or an island | £2,200 to £3,500 | £25 per cabinet, if flat-pack | 5 to 9 days |
| Old kitchen removal (optional) | £195 to £395 | Half a day to 1 day |
When you compare with a retailer's installation quote, check whether it includes plumbing, gas, electrics, old-kitchen removal and waste. Our quote lists every one of them. See our Glasgow kitchen fitting price guide for worked examples.
The quickest way to tell whether your retailer kitchen is flat-pack or rigid is to check your order confirmation or the range description. These clues help:
It matters for two reasons. Flat-pack adds £25 per cabinet and 1 to 2 days to the fit. Rigid tall and corner units arrive full size, so they have to fit through your doors and, in a tenement, up your stair, which we check at the survey.
Whoever fits your retailer kitchen, ask these six questions before you pay a deposit. A good fitter will answer every one in writing.
Our answers: a fixed written quote, a partner Gas Safe registered engineer, an electrical certificate from our partner certified electrician, a 2-year written guarantee, old-kitchen removal from £195, and a 25% deposit with the balance on completion.
Your retailer's guarantee covers the products: the cabinets, doors, worktops and appliances. Our 2-year written guarantee covers our workmanship. Some retailers give longer or extra guarantees when you use their own installation service, so check your retailer's terms before you decide. Either way, we fit to the manufacturer's instructions, and if a product fault appears, we'll help you show the retailer exactly what's wrong.
We fit retailer kitchens across Glasgow and Renfrewshire from Johnstone in Renfrewshire. If you've searched for a "Wren kitchen fitter near me" or a B&Q, Wickes or Magnet fitter, these are the areas we cover:
| Area | Towns and neighbourhoods | Postcodes |
|---|---|---|
| Renfrewshire | Johnstone, Paisley, Renfrew, Linwood, Erskine, Houston | PA1 to PA6, PA8 |
| Glasgow | West End, Southside, City Centre, Dennistoun, Maryhill, Knightswood | G1, G11 to G13, G20, G31, G41 to G44 |
| East Renfrewshire | Newton Mearns, Giffnock, Clarkston, Barrhead | G46, G76 to G78 |
| East Dunbartonshire | Bearsden, Milngavie, Bishopbriggs | G61, G62, G64 |
| South Lanarkshire | Rutherglen, Cambuslang, East Kilbride | G72 to G75 |
For other kitchens, see fit-only kitchen fitting, IKEA kitchen fitting or all the areas we cover.
Free, practical guides from James, written for Glasgow homes and checked against our current prices.

Flat-pack or rigid kitchen units? Compare strength, cost, fitting time and access up a Glasgow stair, plus which brands sell which. Assembly £25 a cabinet.

Measure your kitchen properly before you order: tools, a step-by-step method, what to record, and the mistakes that cause missing panels and wrong units.

A line-by-line checklist for kitchen fitting quotes: what should be included, the extras often missed, fixed price vs day rate, VAT and payment terms.
Send us your retailer's plan and order confirmation, and we'll check it, survey your room for free and send one fixed price for the whole fit.
Yes. Wren lists using your own fitter as one of its installation options, alongside fitting it yourself or using Wren's own service. We fit Wren kitchens across Glasgow and Renfrewshire, check the plan and order before delivery, and give one fixed price for the full fit, with no VAT added.
With us, fitting a B&Q kitchen costs £795 to £1,250 for up to 8 units and £1,250 to £2,200 for 9 to 15 units, plus £25 per cabinet if your range is flat-pack. Old-kitchen removal and any gas or electrical work are listed separately on your fixed written quote.
Yes. Magnet's best-selling kitchens come factory-assembled with rigid cabinets, so there's no assembly charge and fitting starts on the first day. Magnet also sells supply-only, so you're free to choose your own fitter. We check rigid tall and corner units against your doors and stairs before delivery.
Yes. Wickes has sold both flat-pack and ready-assembled kitchen ranges, so we check your order to see which you've bought before we quote. Rigid ranges are fitted at our standard price, and flat-pack ranges add £25 per cabinet for assembly and 1 to 2 days on site.
It often can be, but compare like with like. Check whether the retailer's quote includes plumbing, gas, electrics, old-kitchen removal and waste, then compare it with our fixed written quote, which lists all of them. Our prices also have no VAT added, because we're not VAT registered.
Yes. Many Glasgow homeowners buy their kitchen in a retailer's sale and then book an independent fitter. Send us the plan before you order if you can, so we can check it against your room. If you've already ordered, send the confirmation and we'll check it before delivery.
Report it to the retailer straight away with photos, because they'll replace it under their own delivery terms. We fit everything else around the missing piece where we can, then return to finish once it arrives. Checking the delivery the day it arrives prevents most delays.
We fit Wren kitchens across Glasgow, including Knightswood and the West End, close to Wren's Great Western Road showroom. Clydebank and the rest of West Dunbartonshire aren't on our standard area list yet, so call us with your postcode and we'll confirm straight away whether we can fit your kitchen.