Through-lounge knock-throughs · Causeway Coast and Glens
Through-lounge knock-throughs in Causeway Coast and Glens
Through-lounge knock-throughs across Causeway Coast and Glens, designed by a structural engineer and signed off by building control.
- Survey, design and installation in one
- Covering BT49, BT51, BT52, BT53
- Inspected before it is covered
- Free survey visit
- Engineer's calculations arranged
- Building control handled
- Fixed written price once scope is agreed
- England, Wales, mainland Scotland & NI
Through-lounge knock-throughs in Causeway Coast and Glens: how it works
If you are planning through-lounge knock-throughs in Causeway Coast and Glens, the order of work matters as much as the steel: survey, calculations, approval, propping, installation, inspection and making good. That includes Ballycastle, Ballymoney and Limavady, plus smaller towns and villages nearby. We run that sequence for you as one job with one point of contact.
Worth knowing before you start
- In most terraced houses the wall between the front and back rooms runs across the house and carries the floor above, plus the wall between the front and back bedrooms. It is normally load-bearing, but the engineer still checks before any design is drawn up.
- Many owners leave short nibs of wall at each end of the opening rather than going fully wall to wall. Nibs can give the beam a bearing, line up with the chimney breasts and keep the feel of two linked rooms, but the engineer decides whether they are adequate.
- Ornate cornicing often runs around both rooms and stops at the wall being removed. Where practical, the run is extended across the opening by matching the profile, either run in place or cast, so the joined room looks original rather than patched.
- If the house is listed, internal structural alterations need listed building consent as well as building regulations approval. Conservation area status does not usually affect internal work, but flats within converted period houses normally need the freeholder's consent.
- The steel commonly needs fire protection to meet building regulations, usually by boxing it in fire-rated plasterboard and skimming it. In period rooms the box can be finished with a matching cornice so it reads as part of the original ceiling.
From survey to sign-off in Causeway Coast and Glens
Survey in Causeway Coast and Glens
We visit, look at the wall and what sits above it, measure the opening and note services, access and how the steel can be brought in.
Engineer's design
A structural engineer sizes the beam, padstones and any posts, and sets out the temporary support needed while the wall is out.
Building control
A full plans application or building notice goes to Causeway Coast and Glens Borough Council under the Building Regulations (Northern Ireland) 2012 before work begins.
Install and sign-off
Props go in, the opening is formed, the steel is set and packed, building control inspects it, and we make good.
What do through-lounge knock-throughs cost in Causeway Coast and Glens?
As a guide, budget £2,150–£4,750 including VAT for through-lounge knock-through in Causeway Coast and Glens, based on published UK cost guides adjusted for prices in Northern Ireland (-14%).
| Job | Typical guide range | What it usually covers |
|---|---|---|
| Through-lounge knock-through | £2,150–£4,750 | Wall between front and back reception rooms, steel beam, approvals, plastering and floor infill |
| Load-bearing wall removal with steel beam | £1,700–£4,300 | Typical internal wall up to about 4 m: calculations, building control, propping, steel, padstones, fitting, fire protection and making good |
| Kitchen-diner knock-through | £2,150–£5,150 | Internal structural wall between kitchen and dining room, steel beam, approvals and making good (kitchen fitting extra) |
| Plastering and making good | £260–£1,030 | Boxing the beam, bead and skim, reveals, floor infill where the wall stood and tidy-up |
Figures include our approximate regional adjustment for prices in Northern Ireland (-14%) and are rounded. How these figures are worked out.
Approvals in Causeway Coast and Glens
Removing a load-bearing wall in Northern Ireland needs building control approval from the council. Causeway Coast and Glens Borough Council covers Causeway Coast and Glens. The engineer's calculations support the application, and a completion certificate is issued after the final inspection.
The Party Wall etc. Act does not extend to Northern Ireland. Shared walls are dealt with under your title and the general law, so we recommend agreeing access and the work with your neighbour before it starts.
Through-lounge knock-throughs by town
Local questions answered
Which towns in Causeway Coast and Glens do you cover?
We cover towns including Coleraine, Ballymoney, Limavady and Portrush, plus the villages and smaller towns around them.
How much do through-lounge knock-throughs cost in Causeway Coast and Glens?
As a guide, budget £2,150–£4,750 including VAT for through-lounge knock-through in Causeway Coast and Glens, based on published UK cost guides adjusted for prices in Northern Ireland (-14%). The exact figure depends on the span, what the wall carries, access and the finish, and is fixed in writing once the scope is agreed.
Is the wall between two reception rooms load-bearing?
In most period terraces and semis it is, because it carries the floor joists and the wall between the bedrooms above. Some later houses have lighter partitions in this position, so the only way to be sure is an engineer's inspection. We arrange this during the survey and design stage.
How wide can a through-lounge opening be?
That depends on what the wall carries and how the beam ends can be supported, and the structural engineer sets it. Many owners go nearly full width, keeping short nibs at each end, while others choose a narrower opening to keep two distinct rooms. Wider spans need heavier steel and sometimes columns.
Will the ceiling crack when the wall is removed?
Some minor cracking in old lath and plaster ceilings is possible, even with careful propping, because the structure is being disturbed. We prop to spread the load and protect ceilings where we can, and any cracks are filled or repaired as part of making good. Sound plaster normally stays intact.
Should I keep the chimney breasts when knocking through?
Most people do, because the breasts frame the opening and support the stack above. Removing a chimney breast is a separate structural job needing its own design and approval, and it affects your neighbour if the stack is shared. Keeping them usually simplifies the steelwork and preserves the character of the room.
Who approves through-lounge knock-throughs in Causeway Coast and Glens?
Structural work in Causeway Coast and Glens needs a full plans application or building notice to Causeway Coast and Glens Borough Council. We prepare and submit it with the structural engineer's calculations and arrange the inspections, so the completion paperwork follows the job.