How Much Does It Cost to Plaster a Room on Teesside?

What the price is actually made of

The cost to plaster a room is set by three things, and floor area is only one of them. Whether the existing plaster can be skimmed over or has to come off. How much of the work is ceiling rather than wall. And how many separate visits the job needs, because plaster has to dry before anything goes on top of it.

That is why nobody prices it down the phone from a room size. A 1990s bedroom in Ingleby Barwick with sound walls, and a Victorian front room in Linthorpe with lath overhead and blown lime plaster below, are the same square metres and a very different job.

We do not publish a price per room, and a national average quoted online is describing a house nobody has looked at.

Skimming over, or hacking off and starting again

This is the biggest single fork in the price, and it is settled in two minutes with the back of a hand. Sound plaster gives a dull, solid sound. Plaster that has parted from the brick behind sounds hollow, and nothing stuck to it lasts.

A skim is a finish coat of two or three millimetres over what is already there. It is what people mean when they ask to skim plaster a room, and across a lot of Teesside housing it is genuinely the right answer.

Hacking off is a different job. The old plaster comes off to the brick, the waste has to be bagged and taken away, and the wall is then dot and dabbed with board or floated out with a backing coat before the finish goes on. It is the only honest answer where the plaster has blown, where a leak has been through it, or where somebody has patched at four different levels.

Why ceilings cost more than walls

Ceilings are priced higher per square metre than walls almost everywhere, for two reasons. Working overhead is slower and unforgiving, and it is done off boards. And ceilings are where the awkward existing construction lives.

Artex is the usual complication, and it went onto a great many ceilings across Billingham, Thornaby and the Middlesbrough estates. Anything applied before the year 2000 can contain asbestos, so it gets overboarded or skimmed over rather than scraped off. That is a different price from a plain ceiling.

Size, height and the twelve by twelve question

Room size matters less than people expect. Ceiling height matters more.

A room twelve feet by twelve with a standard ceiling carries roughly 36 square metres of wall and about 13 square metres of ceiling. Go to fourteen by fourteen and the walls grow by about a sixth, but the ceiling, the dearer surface, grows by more than a third. Give that same footprint a three metre Victorian ceiling and you have added about a quarter to the wall area before anyone climbs anything.

Lime, lath and the Victorian terraces

What a solid, lime-plastered wall does with moisture is Historic England's subject rather than a plasterer's preference, and on a listed building the choice of material can be a consent question in its own right — whether a property is listed being checkable by address.

In pre-1919 stock, and there is plenty around Linthorpe, Ayresome, Oxbridge and the Saltburn jewel streets, the original plaster is lime, and upstairs it usually sits on timber laths.

Lath and plaster works by being squeezed through the gaps to form nibs on the back, and those nibs are the only thing holding the ceiling up. A century and a half of slammed doors, lifted floorboards and the odd leak breaks them, which is why an old ceiling can look perfect and sound hollow.

That leaves two honest options at different prices. Take it down, which is dirty and makes real waste but lets everyone see the joists and the wiring above them. Or overboard through to the joists and skim, which is quicker and cheaper but keeps the old ceiling and its weight up there. Neither is wrong. Being told which one you are buying is the point.

Gypsum on a solid wall, and the damp that arrives later

Putting modern gypsum plaster on a solid wall built to breathe is one of the commonest causes of damp that turns up a year after the work finished.

These walls have no cavity and no modern damp proof course. They take in moisture and give it back by evaporation, through porous brick, lime mortar and lime plaster. Gypsum is far less permeable than lime, so across the inside face it closes that route. The moisture travels sideways and upward instead, salts come to the surface, and the new plaster softens and blows.

It does not fail every time. Plenty of period property here has been gypsum skimmed and is perfectly dry, usually because the wall was dry to start with. It is a bad bet on a wall that is already damp, and our decorators meet the consequences constantly, because the first sign is paint lifting rather than plaster failing.

Drying time is part of the price

New plaster is wet and it dries at its own pace rather than yours. A skim over sound plaster or fresh board is usually days in a warm, ventilated room. A full backing coat on bare brick holds far more water and is usually weeks.

The tell is colour rather than a date. Plaster goes from dark patches to an even pale tone, and the last places to change are the corners and the strip behind the radiator. When those match the rest it is ready, and the first thing on it should be a mist coat, a thinned contract matt, because bare plaster drinks whatever you put on it.

That is what makes plastering a job of several visits. Plasterer, then a gap nobody controls, then the decorator. On a rented property that gap is empty weeks, so it belongs in the plan rather than the apology. Our between-tenancy checklist covers where plastering has to sit in a turnaround for the dates to work.

When a re-plaster becomes building control's business

The threshold is building regulations approval, and the standards a re-plaster can trigger — insulation on a solid wall, ventilation, fire protection to a ceiling — sit in the Approved Documents.

A skim is not notifiable work. Stripping an external wall back to the brick can be, and that is worth knowing before the walls come off.

Under the Building Regulations 2010, renovating a thermal element means providing a new layer or replacing an existing one, and the definition excludes decorative finishes. Stripping an external wall to the brick and re-lining it is replacing a layer. Regulation 23 says that where the work covers more than half that element's surface, the whole element has to be brought up to standard, which Approved Document L puts at 0.30 W/m²K for a wall insulated internally or externally. There is relief where that is not technically or functionally feasible, or would not pay back inside fifteen years.

The practical point is timing. Insulated board rather than plain board is a modest extra while the wall is open and a job of its own afterwards. Your building control body decides how this applies to your house, so it belongs at the quote stage, and where a re-plaster is part of something larger our building team handles the notification.

One caution belongs to the age of the room rather than the wall: a textured ceiling coating applied before 2000 gets tested rather than scraped, under the HSE's asbestos task sheets, and the wider asbestos guidance explains why that cut-off matters.

Where we are the wrong firm

If you want one ceiling patched next week, a one-man plasterer will usually be cheaper and there sooner, and we will say so. Our value is on jobs where the plastering is tangled up with wiring, pipework or a tenancy date.

We will not skim over plaster that sounds hollow to keep a quote down. We will not agree a decorating start that ignores drying. And we will not put gypsum on a wall we think needs lime without saying plainly why first.

Getting a figure for your room

Someone comes and looks at the room. They tap the walls, work out what the ceiling is made of, check for anything wet, and tell you which of the two jobs you are buying before there is a number on anything. You get a fixed written price you can read, keep and accept online, and there is no call-out fee on quoted work.

Because plastering sits with the same team as our decorators, the making good and the mist coat come on one quote rather than two firms blaming each other's timing. The Linthorpe decorating page covers how that runs in the older Middlesbrough stock. Tell us the useful things when you get in touch: an old leak, a crack that returns every winter, paper that predates you.