Quick answer: Before opening a carton, check four figures published on the product page: the minimum door width, the number of packages, the recommended number of people and whether tools are included. On Aosom’s UK site those figures vary widely between models: the HOMCOM 4-in-1 Velvet-Feel Double Sofa Bed (SKU 839-835V70BG, £158.99) states a 30cm minimum door width, ships in one package and includes all assembly tools, while the HOMCOM Loveseat Sofa Bed (SKU 839-900V70LR, £309.99) states 55cm, ships in two packages and recommends two people. Figures captured on 17 August 2026. None of these listings publishes an assembly time, so plan by package count instead. [1][2]
Aosom is the retailer and HOMCOM is its home-furniture sub-brand. Every model in this guide is supplied for self-assembly, and the instruction sheet in the box is the authority for that specific model. Use the sequence below as the planning layer around it.
Check four published figures before you open a carton
| Model and SKU | Price on 17 Aug 2026 | Minimum door width | Packages | People recommended | Tools included | Item weight |
|---|---|---|---|---|---|---|
| 4-in-1 Velvet-Feel Double Sofa Bed — 839-835V70BG | £158.99 | 30cm | 1 | 2 | Yes | 25kg |
| Three-Way Two-Seater Sofa Bed — 83B-575V70CG | £355.99 | Not published | 2 | 2 | Not published | 58.3kg |
| Loveseat Sofa Bed with Side Pockets — 839-900V70LR | £309.99 | 55cm | 2 | 2 | Yes | 48.7kg |
| Three-Seater Storage Sofa Bed — 83B-560V70CG | £379.99 | 34cm | 2 | 2 | Not published | 60.5kg |
| 3-Seater Wide-Seat Corduroy Sofa — 83B-894V71LG | £259.99 | Not published | 2 | 2 | Not published | 41kg |
The published minimum door width is the single most useful number here, and it does not track sofa size in the way people expect. The 25kg double sofa bed states 30cm, the 60.5kg three-seater storage model states 34cm, and the 48.7kg loveseat states 55cm. Where the field is absent, measure the largest carton dimension on arrival instead of guessing. [1][2][3][4]
Step 1: Measure the delivery route against the published figure
Measure the narrowest doorway, the tightest hallway turn, any stair landing and the final placement zone before the delivery arrives. Compare the narrowest of those against the minimum door width on the listing.
Then mark the assembled footprint on the floor with masking tape. Sizes in this group run from 102 × 73cm for the double sofa bed up to 197 × 129cm for the L-shaped storage model, so the difference between them changes how much walking space survives.
Two of these listings also publish a wall-clearance figure, and the values are not interchangeable: the double sofa bed states 110cm, the loveseat sofa bed states 94cm, and the three-way and storage models both state 0cm. Check that figure for the exact model, because it decides whether the sofa can sit against a wall once it is built. [1][2][3][4]
Step 2: Wait for every carton, then inventory the parts
Four of the five models above ship in two packages, and the pull-out L-shaped sofa bed sold as SKU 839-191V70 ships in three. The three-way sofa bed listing says directly that all cartons should arrive before assembly begins. [3][5]
Cartons in a multi-package order can be delivered at different times, so confirm the count against the listing before you start. Starting with one box of two usually means dismantling work later.
What to prepare
- Scissors or a safety cutter for the outer packaging
- The screwdriver or key specified by your instruction sheet, unless the listing states that tools are included
- A soft layer on the floor: flattened cardboard, a blanket or a rug
- A tray or bowl to keep fixings grouped by step
- A second pair of hands, since all five listings above recommend two people
Then identify the major components against the instruction sheet: seat base, back, arms or side panels, legs, and any mechanism parts. Two of these models list their configuration explicitly, which makes the check faster: the corduroy three-seater lists seat, backrest, armrests and legs, and the loveseat sofa bed lists seat, back, arm and leg. [2][4]
Group fixings by step instead of leaving everything in one bag. Missing hardware is a common worry at this stage and it often turns out to be a washer left inside the packaging or a left panel mistaken for a right one.
Step 3: Thread every fixing loosely, square the frame, then tighten
Start all fixings loosely. Holes line up best while the frame still has some movement in it, and fully tightening one side early can pull the opposite side out of alignment.
A workable order for this type of sofa is arms or side panels to the seat base first, then the back, then any centre or under-seat support, then the legs. Leg heights in this group are short — 5cm on the loveseat sofa bed, 5.5cm on the corduroy three-seater and 6.5cm on the storage sofa bed — so fitting them last keeps the body of the sofa easier to align. [2][4]
If a bracket looks a few millimetres out, back off the neighbouring fixings and reseat the panel instead of forcing the bolt. Forcing it risks the thread and the finish at the same time.
Tighten fully only once the sofa sits level without rocking, and work across the frame rather than around one side.
Step 4: Set the mechanism before pushing the sofa back
Convertible models are two jobs in one: build the frame, then test the motion before the final tightening pass.
The double sofa bed publishes five backrest positions at 100°, 120°, 140°, 160° and 180°, and converts to a 183 × 98.5cm bed. The loveseat sofa bed publishes three angles at 105°, 130° and 180°, opening to 101 × 178cm. The three-way model reclines to a maximum 180° through its click-clack movement and opens to 137 × 179cm. Cycle through every published position while the frame is still accessible. [1][2][3]
On the storage model, check the compartment as well as the bed. Its hidden storage measures 110 × 50 × 16cm, and a lid that fouls on one side usually points to uneven hinge spacing rather than a bent part. [4]
Step 5: Allow the cushions time to recover
Vacuum-packed cushions do not reach their finished shape immediately. The three-seater storage sofa bed listing states that its back cushions are vacuum-packed and need three to four days to rebound to their optimal shape. If a cushion looks flat on day one, that note is the first thing to check. [4]
Retighten the fixings after the frame has settled under its own weight, then test the mechanism again. Weight on a new frame can move joints slightly, and a second pass usually improves how the conversion feels.
Troubleshooting
| Symptom | Most likely cause | What to do |
|---|---|---|
| Bolt will not start in the bracket | Neighbouring fixings already tightened | Loosen the adjacent fixings, reseat the panel, restart the bolt by hand |
| Sofa rocks on the floor | Legs fitted before the frame was square | Loosen the legs, level the frame, retighten across the sofa |
| Conversion feels stiff | Frame under slight twist, or sides tightened unevenly | Recheck level, then balance the tension on both sides |
| Storage lid sits proud on one side | Uneven hinge spacing | Loosen the hinge fixings, reset the position, tighten evenly |
| Back cushion looks flat | Vacuum packing on models that state it | Allow the three to four days the listing specifies before judging |
| Parts appear missing | Not all cartons delivered yet | Confirm the package count on the listing before continuing |
FAQ
Q: How long does a flat-pack sofa take to assemble?
None of these listings publishes an assembly time, so the honest planning signal is the package count and the recommended number of people. Every model in the comparison recommends two people, and four of the five ship in two cartons. A fixed sofa is generally simpler than a convertible one because there are fewer moving parts to align.
Q: Can one person assemble a sofa alone?
These listings recommend two people, so plan for a second pair of hands. Item weights run from 25kg to 60.5kg across the models above, and a second person mainly helps with holding the back and side panels square while the first fixings are started.
Q: What if the bolt holes do not line up?
Stop and loosen the neighbouring fixings so the frame can shift. Start every bolt loosely, square the sofa, then tighten. Forcing a bolt into a misaligned bracket is how threads and finishes get damaged.
Q: How do I know the sofa will fit through my door?
Compare your narrowest doorway with the minimum door width on the product page. Among these models that figure is 30cm, 34cm and 55cm on the three listings that publish it. Where it is not published, measure the largest carton dimension when it arrives.
Q: Should I keep the packaging?
Keep it until every component is checked, the mechanism has been cycled and any vacuum-packed cushion has had its stated rebound time. The Consumer Contracts Regulations 2013 provide cancellation rights for many online purchases, subject to the conditions and exceptions in the legislation, and large-item return procedures still need confirming with the retailer. [6]
Key takeaways
- Check minimum door width, package count, recommended people and tools included before opening any carton.
- Published minimum door width does not track sofa weight: 30cm on a 25kg model, 34cm on a 60.5kg model and 55cm on a 48.7kg model.
- Wait for every carton; four of the five models here ship in two packages and the pull-out L-shaped model ships in three.
- Thread all fixings loosely, square and level the frame, then tighten across it and fit the legs last.
- Cycle every published recline position before the final tightening pass, and allow vacuum-packed cushions the three to four days the listing states.
Prices, ratings and specifications were captured from aosom.co.uk product pages on 17 August 2026. They may reflect promotions; confirm live details and the instruction sheet supplied with your model before assembly.
References
- HOMCOM 4-in-1 Velvet-Feel Double Sofa Bed with Pillows — Aosom UK
- HOMCOM Loveseat Sofa Bed, Convertible Bed Settee with Side Pockets — Aosom UK
- HOMCOM Three-Way Two-Seater Sofa Bed — Aosom UK
- HOMCOM Three-Seater Storage Sofa Bed — Aosom UK
- HOMCOM 3-Seater Pull-Out L-Shaped Sofa Bed with Storage — Aosom UK
- Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 (legislation.gov.uk)