Partition walls
Plasterboard partitions on a metal frame, with or without insulation, to re-plan a floor, create meeting rooms or separate a storage area from a reception space.
Construction & works
Plastering and insulation: partitions, ceilings and dry lining for businesses
Partitions, suspended ceilings, dry lining, thermal and acoustic insulation for offices, shops and business premises: describe your project and compare quotes from firms.
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Plastering and insulation shape the inside of a building: they divide up spaces, line walls, conceal services, set the thermal and acoustic comfort and contribute to fire safety. For a facilities manager, a shop owner or a managing agent, it is often the first work package in a refurbishment, an office re-plan or a compliance upgrade.
The trade covers several skills. The drylining fitter installs partitions, dry lining and ceilings in plasterboard on a metal frame, through to the taping and skim coat that prepare the surface for painting. The plasterer carries out renders, mouldings and repairs to old substrates. The insulation installer fits thermal and acoustic insulation from the inside, from the outside or in roof spaces. Many firms combine these skills and add suspended ceilings, demountable partitions or passive fire protection.
This page helps you write a usable quote request: the services available, materials, price factors, precautions to take in an older building and questions to ask firms before you choose.
Common services
Partitions with specific performance
Fire-rated boards for compartmentation, moisture-resistant boards for wet rooms, walls with high sound reduction for meeting rooms: the system is chosen to suit the requirement.
Suspended ceilings
Continuous plasterboard ceilings or tiled ceilings on a grid, which hide ducts and cables, leave access to services and can take lighting and acoustic treatment.
Dry lining and wall finishes
Bonded or framed dry lining in front of an external or party wall: it improves thermal comfort, hides services and gives paint a flat surface again.
Thermal insulation
Internal or external insulation, of roof spaces, rafters and ground floors: the insulant and its thickness depend on the wall, the space available and how the premises are used.
Acoustic insulation
Lined partitions, absorbent ceilings, decoupled floors: the firm deals with airborne and impact noise using systems whose performance is backed by test results.
Plastering, finishing and repairs
Plaster coats, repair of old substrates, mouldings, joint tape and paint-ready finishing coats: precision work on which the final look of the paint depends.
Materials used
Standard, moisture-resistant, fire-rated and high-impact plasterboardMetal frames: tracks, studs and hangersMineral wool (glass wool, stone wool)Expanded polystyrene and polyurethane (PIR)Bio-based insulation: cellulose wadding, wood fibreMineral or metal ceiling tilesPlasters, joint tape and plaster
Types of project
- Re-planning an office floor into partitioned spaces
- Meeting rooms, booths and soundproofed offices
- Suspended ceilings and acoustic treatment for shops, restaurants and rooms open to the public
- Dry lining and insulation of business premises, converted warehouses and workshops
- Reinstatement after damage or at the end of a lease
- Fire compartmentation and loft insulation in commercial buildings
What affects the price
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1
Area, height and complexity of the layout
The length of partitions and area of ceilings matter, but ceiling height and the number of corners, returns and openings weigh just as much. A floor divided into small rooms costs more than a large open space of the same area.
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2
Performance required
Fire resistance, sound insulation, impact or moisture resistance: each requirement calls for a specific system (boards, thicknesses, insulation, frame) and sometimes an extra check.
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3
Level of finish
Rough joints behind furniture do not call for the same work as a wall viewed in raking light before a high-quality paint finish. State the finish you expect and the covering that will follow.
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4
Condition of the substrate and strip-out
Out-of-plumb walls, damp substrates, old dry lining to remove, possible asbestos in an older building: preparation, strip-out and waste disposal often account for a large share of a quote.
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5
Working conditions
Occupied building, night or weekend work, no goods lift, limited storage, phasing by zone: these operating constraints extend durations and show up in the price.
Tips for a successful request
Post a request- Attach a dimensioned plan or photos of the area, stating ceiling heights, access routes and the existing work to be kept or removed.
- Describe the level of performance expected (fire resistance, acoustic target, insulation target) and attach the inspection body’s report or the specification if there is one.
- State the finish: boards ready for painting or painting included, tiled ceiling, junctions with joinery and light fittings.
- Give the year the building was constructed and attach the pre-works asbestos survey if one exists.
- Detail the operating constraints: working hours, areas to be vacated, presence of the public, removal of rubble and cleaning at the end of the project.
Fire, acoustics, thermal: choosing the right system
A partition is not just a panel: it is a system (boards, frame, insulation, screws, joints) whose performance is certified for the whole assembly installed according to a precise fixing specification. Replacing one component or reducing a thickness can lose the stated performance. Your request should therefore name the requirement rather than stop at an area.
| Need | Common solution | What to check |
|---|---|---|
| Fire compartmentation | Fire-rated boards on a suitable frame, sealing of penetrations | Fire resistance rating (EI), system test report, junctions |
| Acoustic comfort | Lined partition with insulation, absorbent ceiling, decoupled walls | Sound reduction index (Rw, in dB), flanking leaks (sockets, ducts) |
| Thermal insulation | Dry lining, insulation of roof spaces or rafters, external insulation | Thermal resistance R (m².K/W), continuity of the insulation, moisture |
The fire requirement depends on the regulations that apply to your premises (public-access building, workplace, office building): have it confirmed by your inspection body or project manager. In France, firms work to the DTU (technical building standards), notably NF DTU 25.41 for plasterboard work and NF DTU 58.1 for suspended ceilings: ask for the quote to cite the systems and references chosen.
Insulating business premises: what to know before you sign
Insulating a commercial building follows an overall logic: insulating one wall without dealing with ventilation, thermal bridges and moisture can move a problem rather than solve it. A good firm first looks at what is there (type of wall, condition of the roof, moisture) and justifies its choice of insulation.
- Performance is read in thermal resistance (R), expressed in m².K/W, and not in thickness: two insulants of the same thickness do not insulate in the same way.
- Installation matters as much as the product: continuity of the insulation, treatment of junctions, vapour control layer or vapour barrier where required.
- Any available grants, such as energy savings certificates in France, can impose criteria on the product, its performance or the firm’s qualification (the RGE mention, for example): find out before you sign.
In France, a commercial building of at least 1,000 m² may fall under the “Éco Énergie Tertiaire” scheme, which sets energy consumption reduction targets for 2030, 2040 and 2050. Insulation contributes to this, along with ventilation, lighting and controls. External insulation changes the appearance of the façade and may require planning permission: check with the local authority.
Older buildings, asbestos and working in occupied premises
In an older building, do not drill, sand or demolish anything before you know what the materials contain. In France, buildings for which the building permit was issued before 1 July 1997 may contain asbestos (flock coatings, floor tiles, adhesives, renders, boards). The client must have an asbestos survey carried out before works and hand it to the firms, ideally before the tender so that each one prices the same situation. Removal is a job for specialist, certified firms, never for an ordinary drylining contractor.
In occupied premises, phasing determines success: areas vacated in stages, adjusted hours, protected circulation routes, control of dust and noise, access for deliveries. Where several firms are on site, the project owner must appoint a health and safety coordinator (SPS coordinator in France). Finally, allow for removal of rubble and end-of-works cleaning, which are often missing from quotes.
Partitioning often leads to follow-on work in masonry, electrical work and painting: for any project with several trades, see the premises refurbishment page. To structure your need, use our specification generator, then post your request.
Suppliers: plastering & insulation
Related expertise
Painting & finishes
Interior and exterior painting, flooring, tiling
Premises refurbishment
Refurbishment and fit-out of offices, shops and workshops
Building electrical work
Installations, compliance upgrades, lighting, low-voltage systems
Joinery & closures
Doors, windows, shutters, gates, roller shutters
Frequently asked questions
A question not answered here? Visit the help centre or write to us.
What is the difference between a drylining fitter, a plasterer and an insulation installer?
The drylining fitter installs partitions, dry lining and ceilings in plasterboard on a frame. The plasterer applies renders, mouldings and repairs to old substrates. The insulation installer fits thermal or acoustic insulation. Many firms do several of these trades. In your request, describe the result you want (a partition, a ceiling, a level of performance) rather than the trade.
Do I need an insurance certificate for partitions or suspended ceilings?
Yes, always ask for one. In France, builders must hold ten-year liability insurance (assurance décennale), and it is wise to also require a professional liability certificate. Not every service falls under the ten-year guarantee, which covers structural works, but the certificate remains the reference document: check that it is valid and that it mentions plastering or insulation as a covered activity.
How can I get quotes that can be compared?
Provide a plan or dimensions, the ceiling height, the type of partition and the performance expected. Ask each quote to detail quantities, the systems and references used, finishes and waste removal. A site visit before pricing remains the best way to avoid discrepancies: every firm then prices the same situation.
What changes in an older building for insulation work?
You first need to identify the type of walls and any moisture, then look for asbestos in buildings whose building permit dates from before 1 July 1997 (in France). An unsuitable insulant or vapour barrier can trap moisture in an old wall. Ask the firm to justify the material and installation method it proposes.
Can we stay in the premises during plastering work?
It is often possible with phasing by zone, protection and adapted hours, but the project takes longer and the cost may rise. Tell the firms from the outset: they will price protection, cleaning and moving furniture. For very noisy or dusty work, partly vacating the premises is often preferable.
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