AJB Group (Carpentry) Ltd
Open plan kitchen with island and Belfast sink fitted by AJB Group in Whittlesey

Whittlesey, Cambridgeshire · Domestic clients

Whittlesey: a C24 joist set and an open plan kitchen remodel

Domestic carpentry in Whittlesey, Cambridgeshire, from the structural floor upwards. A traditional joist set in C24 8x2 at 400mm centres, and an open plan kitchen remodel built around a family sized island.

The brief

The same trade, at both ends of a house

Whittlesey has produced two jobs that between them show the whole range of what a carpentry contractor does inside a home. In June 2025 it was a traditional joist set, the structure of a floor, the part nobody ever sees once it is decked. In May 2026 it was a kitchen remodel, the part the client looks at every single morning.

Homeowners tend to think of those as two different trades and two different companies. They are not. They are the same carpenters, and the reason the finished kitchen looks right is often that somebody got the floor under it flat and solid first.

Both were private domestic clients rather than contract work. That changes the job in one important way: the client is living with the result, and they are standing in the room while it is being built.

What we did

A traditional joist set: C24, 400mm centres, 22mm Caberdex

The June 2025 job was a simple set of floor joists with a satisfying finish, fitted traditionally. The specification was straightforward and worth stating plainly, because it is the sort of detail most quotes leave out:

  • C24 8x2 timbers. C24 is the higher of the two common structural grades for softwood joists. For a given span it either reaches further or deflects less than the same section in C16, and it comes with a straighter, tighter-grained stick to work with.
  • 400mm centres. Closer than the 600mm you can often get away with. Closer centres support the deck better, reduce bounce and dramatically cut the chance of a squeak developing under a floor once the furniture is on it.
  • 22mm Caberdex flooring. A moisture-resistant tongue and groove chipboard flooring panel, laid and bonded so the deck acts as one sheet rather than a set of loose boards.

And, in Ashley's own words, a little bit of talent from the fitters. Traditional joisting is unglamorous work where the whole quality of the job lives in the setting out: level bearings, joists at consistent centres, noggins and strutting where they belong, and a deck glued and fixed properly. There is no way to fix a bouncy floor cheaply afterwards.

An open plan kitchen remodel

The May 2026 job was a kitchen remodel for a domestic client in the same town: an open plan kitchen with a family seating area, a genuinely one off room, beautifully installed. It was a Wren kitchen, chosen by the client, and it featured:

  • A Belfast sink, which needs its own base unit modification and a properly supported, level bearing to sit on
  • Quartz worktops, which are templated after the units are set and fixed, so the carcasses have to be dead level and dead square before the templater ever arrives
  • A family sized island to sit around, with services brought up through the floor

Open plan is the harder layout to fit well. In a galley kitchen a wall hides a multitude of tolerances. In an open plan room the island is seen from every side, the run of units is read against a long sight line, and any drift in the levels between one end of the room and the other is obvious. The floor, the walls and the ceiling are all usually out by something, and the fitter's job is to absorb that quietly so the finished room looks square.

Your choice, your style, our touch

The kitchen was supplied and fitted, which is one of two ways AJB Group works. Some clients want the company to source and install the whole thing. Others have already chosen and bought a kitchen and need it fitted properly by carpenters rather than by a delivery-day installer. Both are fine. What does not change is who turns up: employed carpenters who also fit second fix on commercial contracts.

At a glance

Location
Whittlesey, Cambridgeshire
Client
Private domestic clients
Sector
Domestic renovation
Scope
Traditional joist set and an open plan kitchen remodel with family seating area
Joist spec
C24 8x2 timbers, 400mm centres, 22mm Caberdex flooring
Kitchen spec
Wren kitchen, Belfast sink, quartz worktops, family sized island
Dates
Joist set June 2025, kitchen remodel May 2026
Status
Both complete

Services proven here

Floors
Floor joists
Kitchens
Kitchen fitting
Second fix
Second fix carpentry
Renovation
Extensions and renovations

On site

Whittlesey, Cambridgeshire

Open plan kitchen with island and Belfast sink fitted by AJB Group in Whittlesey
Open plan kitchen remodel completed at Whittlesey
Quartz worktops and Belfast sink in the kitchen fitted at Whittlesey
New timber joist set over a single storey extension against a brick house
C24 8x2 joists set at 400mm centres on a traditional fit in Whittlesey
Looking up at new timber roof joists spanning the blockwork walls of an extension shell

The result

A solid floor and a room the family actually uses

The joist set went in as a traditional fit with a satisfying finish: C24 8x2 at 400mm centres under 22mm Caberdex, which is a floor specified to be quiet and stiff rather than merely adequate. The kitchen came out as an open plan room with a family seating area, a Belfast sink, quartz tops and an island big enough to sit around, which is what the client asked for and what open plan is actually for.

Both jobs make the same point about choosing a contractor for work inside your home. The specification is the promise. If a quote will not tell you the timber grade, the centres and the deck, or which kitchen and which worktop, it is not really a quote, it is a number. AJB Group's carpenters give you the specification up front and then build to it.

Whittlesey sits inside AJB Group's daily patch, close to Peterborough and well within the Cambridgeshire coverage, so a site visit for a job like this is straightforward to arrange.

Common questions

About this project

What timber specification was used for the Whittlesey joist set?

C24 8x2 timbers at 400mm centres, decked in 22mm Caberdex flooring. C24 is the higher of the two common structural grades for softwood, so for a given span it either goes further or deflects less than the same section in C16.

Why fit joists at 400mm centres rather than 600mm?

Closer centres give a stiffer, quieter floor. Building regulations are a minimum standard, not a target, and a floor set at 400mm centres carries the deck better, bounces less and is far less likely to develop a squeak once the furniture is on it. It costs a little more in timber and it is the difference between a floor that passes and a floor that feels solid.

Can you supply the kitchen as well as fit it?

Both options are available. The Whittlesey kitchen was a Wren kitchen chosen by the client and installed by our carpenters, with a Belfast sink, quartz worktops and a family sized island. Supply and fit or fit only, whichever suits the project.

Do you cover Whittlesey and Cambridgeshire?

Yes. Cambridgeshire is one of our three core counties alongside Lincolnshire and Norfolk, and we work across the area daily from our base in Spalding, on domestic renovations as well as commercial contracts.

Related project

Another structural floor

AJB Group carpentry work at King's Lynn, Norfolk

King's Lynn barn conversion

A traditional joist set installed to create a new first floor inside a tight barn structure, then structural floors, ceilings, external walls and a full first fix.

King's Lynn · Eastern Construction Consultants

Planning a kitchen or a new floor?

Supply and fit or fit only, with the specification written down before we start. Book a free site visit.

Call 07716 954091 Get a quote