Homeowners, know your flanges, pickled finishes, ball cocks and space balls with the trade term dictionary

When the inevitably January DIY turns to failure and you need to turn to the help of a professional it can be a daunting experience if you don’t know your ball cocks from your flanges, and while we try to play it cool when a tradesman is in our house, we all get lost in a sea of trade lingo from time to time.

But not to worry, leading tradespeople comparison site, HaMuch.com, has compiled a trade term dictionary so you can converse like a pro and keep on top of what’s happening in your home.

Trades

Let’s start simple. Most of us will know the slang for different trades, but if your trade person advises you need a bricky, chippie or sparky, it simply means a builder, carpenter or electrician.

Unintended Connotations

You may think your tradesperson is being a tad rude with certain phrases but the chances are they’re not. A ball cock may bring a snigger, but it’s actually a mechanism used to fill water tanks, most commonly found in a toilet.

A flange may seem like the feminine term for a ball cock, but again, it’s not. It’s simply an external or internal rim to add strength to a structure.

A plumb bob? It’s just a weighted object on a line that establishes a straight line. A pickled finish sounds interesting but it’s just the process of finishing wood in a lighter colour rather than a dark varnish.

An access panel provides an easy route to any wires or pipes hidden behind walls, while space balls are small rubber balls used to center panels in cabinet doors.

If your tradesperson tells you they are sweating a joint, don’t be alarmed, they’re just soldering copper piping together.

If you hear your tradesperson say on the piss, don’t worry, they aren’t out drinking on the job, it means a line, cut or edge is far from straight. However, if they are talking about POETS day, you could be paying for a half days work as that translates to piss off early, tomorrow’s Saturday.

Materials

When discussing materials and methods, trade lingo may leave you lost. However, it’s often pretty simple. Aggregate is nothing more than crushed stone or rock in most cases, while cladding is a thin layer applied to the outside of a building, more often than not for decorative reasons.

Eggshell is a type of paint that sits between matt and high gloss finish, while grout is used to fill gaps between bricks or tiles. Lagging isn’t their state from a wild night before, it’s an insulation that covers pipes to regulate temperature, while quoin can be the corner of a wall or a specific block used to construct the corner of a wall.

Skim is a final layer of plaster to provide a smooth finish and a soldier’s course are bricks laid vertically rather than horizontally.

Structures

Don’t be alarmed if your tradesperson mentions a carcass, carcasses refer to kitchen cabinets or any other item of furniture shaped like a box. A catch is simply the mechanism that keeps cupboard doors shut.

A party wall isn’t as fun as it sounds, it simply refers to a shared boundary as you would have in a semi-detached property. A rafter is a series of sloping wooden beams typically found in a pointed roof and a throat is the narrowed part of a chimney above a fireplace.

The Rest

Other terms you may hear range from drafting, which means having architectural plans drawn up for a job. The first and second fix refers to the work needed to get a building from the foundation stage to plaster on the wall, with the second fix bringing a neater finish to the work.

Grain is nothing more than the direction of wood fibres and snags or snagging is taking care of any final minor issues to finish a project.

So there you have it, now you can converse with a tradesperson like a pro and avoid the awkward situation of nodding and smiling while having no clue what they are talking about.

Founder and CEO of HaMuch.com, Tarquin Purdie, commented:

“It’s no surprise that tradespeople across all sectors have their own industry lingo in the same way we all have in our respective areas of work. However, for some reason, the fact that they often conduct their work within our homes forces us to feel we should know this vast range of slang and industry terminology or risk extreme embarrassment.

While some of this stems from a desire to stay in the know and avoid being taken for a ride, it’s far less stressful to hire a trusted tradesperson and leave the work and chat to them, while you go about your daily life instead.”

Dictionary Term
Definition
Aggregate
Crushed stone or rock – it can mean sand, ballast, gravel, or other loose building material.
Bricky
A brick-layer / builder
Carcasses
Refers to kitchen cabinets. In builder/carpenter terms, carcasses are any item of storage furniture shaped like a box, as opposed to something that has a surrounding frame, like a table or a chair.
Catch
Usually describes the mechanism that helps keep cupboard doors shut.
Chippie
Chippie is a quick way of referring to softwood boards, often known as chipboard. However, it is also often used as a term for a joiner/carpenter or anyone who works with wood.
Cladding
The thin layer of material applied to the outside of a building, usually for decorative reasons. It can consist of natural, for example, stone, or man-made materials. It involves the application of one material over another to provide a layer. In construction, cladding is used to provide a degree of thermal insulation and weather resistance, and to improve the appearance of buildings. It can also be a fire risk based on design or material used.
Drafting
Getting blueprints or architectural plans drawn up for a given structure/design.
Eggshell
A type of paint used by decorators. It gives a glossier finish than matt paint but isn’t quite high gloss. Comparing it to more commonly found finishes, it has less of a sheen than satin or silk but more than that of matt emulsion paint or satinwood.
First and second fix
The first fix comprises all the work needed to take a building from the foundation to putting plaster on the internal walls. This includes constructing walls, floors, and ceilings, as well as inserting cables for electrical supply and pipes for water supply. The second fix comprises all the work after the plastering to a finished house. Electrical fixtures are connected to the cables, sinks, and baths connected to the pipes, and doors fitted into doorframes. The second fix requires a neater finish than the first fix.
Grain
The direction of wood fibres in a piece of timber – thus it is bad to ‘go against the grain’.
Grout
The material used to fill in the gaps between tiles in bathrooms and kitchens. Grout is generally a mixture of water, cement, and sand, and is used in pressure grouting, embedding the mixture in masonry walls, connecting sections of pre-cast concrete, filling voids, and sealing joints such as those between tiles.
Jigsaw
The name of a tool used to intricately cut wood. It consists of an electric motor and a reciprocating saw blade.
Lagging
The insulation that covers pipes to regulate temperature. Pipe lagging is a special type of insulation fitted around water pipes. It keeps heat within the pipes – thus being useful for saving energy as well as preventing pipes from freezing and bursting. Lagging also prevents condensation from forming on cold pipes.
Party Wall
A shared property boundary, such as a wall in a semi-detached house, that both sides have legal rights to. It is a wall that stands along the boundary of land belonging to two (or more) different owners.
Quoin
Quoins are both the corners of walls and the specific blocks used to construct the corner, even if they are only decorative and not structurally important. Some quoins are structural, providing strength for a wall made with inferior stone or rubble, while many of the other blocks merely add aesthetic detail to a corner.
Rafter
A series of sloping, diagonal, wooden beams that hold the structure of a typical pointed house roof. They are designed to support the roof and its associated loads. A pair of rafters is called a couple. In home construction, rafters are normally made of wood, while exposed rafters are a feature of some traditional roof styles.
Skim
A final layer of plaster. It provides a smooth finish to be subsequently painted/decorated.
Snags
Any minor issues during the project or even after work has been done – ideally, the tradesperson will rectify these to finish off the project.
Soldier course
Bricks that are laid vertically rather than horizontally
Sparky
An electrician
Throat
The narrowed part of a chimney above stoves or fireplaces. It is a part of a chimney immediately above the fireplace where the walls of the flue are gathered or brought close together to increase the draft.
Ball Cock
A mechanism used to fill water tanks, mostly found in toilets.
Flange
an internal or external rim used to add strength to a structure.
Plumb Bob
A weighted object to establish a straight line.
Pickled Finish
Finishing wood with a lighter finish rather than a dark varnish.
Access Panel
An entry point within a wall to allow you to reach any pipes or wiring.
Space Balls
Hard rubber balls—about the size of a miniature pea—used to help center the panels in frame-and-panel cabinet doors and prevent them from rattling.
Sweating a Joint
“Sweating” and “soldering” are synonymous home improvement terms used to describe the process of using heat and solder to join copper pipe and fittings to one another.
On the piss
When a line, edge or wall is skewed rather than straight.
POETS day
Piss off early, it’s Saturday tomorrow.

Properganda PR

National and local media coverage for property businesses. Journo quotes delivered in minutes.

You May Also Enjoy

Breaking News

Renters’ Rights Act will be enforced from May 1st 2026

Lettings experts outline key changes landlords must prepare for Following the announcement that the Renters’ Rights Act will begin being implemented from May 1st, lettings and compliance experts at Beresfords Group are advising landlords to start preparing now for the most significant reform to the private rented sector in decades. The government has confirmed that…
Read More
Estate Agent Talk

The Compliance Curve: Meeting Landlord Safety Standards Through Smart Heating Upgrades

In today’s rental market, compliance isn’t just about ticking boxes — it’s about protecting investments, safeguarding tenants, and staying ahead of fast-evolving regulations. For landlords across the UK, particularly those managing older housing stock, staying compliant has become a strategic exercise in property value preservation. Among the many areas demanding attention, heating systems stand out…
Read More
Breaking News

Government confirms ban on no fault evictions to begin in May

The Government has confirmed that no fault evictions will officially end by May next year, marking one of the most significant reforms to the private rented sector in a generation. Under the updated Renters’ Rights Act timetable, Section 21 will be abolished from May 2026, with ministers pledging greater security for England’s 11 million private…
Read More
Breaking News

Landlords must ‘act quickly’ after Renters Rights Act launch date is announced

A leading estate and lettings agent says that landlords must “act quickly” after the Government announced that the controversial Renters Rights Act will be implemented from May 1st next year. The changes, which include the end of Section 21 “no-fault” evictions, represent the biggest upheaval in the landlord and tenant sector in a generation. The…
Read More
Estate Agent Talk

Landlord EICRs Compliance in 2026: EICR Rules, Costs & Risks — Interview with Ethem from Efficient Home Energy

With thousands of landlords approaching their next round of electrical safety renewals, 2026 is shaping up to be a crucial year for safety compliance. In this exclusive interview, Ethem, an electrical safety expert from Efficient Home Energy, breaks down the risks, the regulations and the practical steps landlords and letting agents must take to stay compliant and protect…
Read More
Breaking News

Mortgage arrears and possessions Q3 2025

UK Finance today releases its latest mortgage arrears and possessions data for Q3 2025, while highlighting continuing lender support for any customers facing financial difficulty. Key Information  The number of homeowner mortgages in arrears fell by four per cent in Q3 2025 compared to the previous quarter. The number of buy-to-let (BTL) mortgages in arrears…
Read More