Llangefni · Gwynedd
Bowing wall repairs in Llangefni
In Llangefni, as in most UK towns, bowing walls turn up mainly in older solid-walled terraces, where the floors were never properly tied to the front or side walls. Most can be held where they are with remedial restraint, without rebuilding.
Guide price from£920per wall inc VAT

- Postcodes
- LL77
- Population
- about 5,500
- Area
- Gwynedd
- Pricing region
- Wales
What is the ground like in Gwynedd?
We cover Llangefni and its postcode districts LL77, part of Gwynedd, with a population of roughly 5,500. Nearby places we cover include Bangor (8 miles), Caernarfon (8 miles) and Holyhead (14 miles).
Most of Gwynedd is on firmer ground than the clay belts of the south-east. Old metal-mine shafts and workings are recorded in places, so mining searches are routine for some properties. Across Gwynedd, most homes are slate and stone terraces, chapels and cottages, Victorian seaside houses and post-war estates.
What happens when we carry out bowing wall repairs in Llangefni?
Assess the bow
We look at where the wall bows, how far it is out of plumb and how the floors and roof meet it. Photographs from your phone held flat against the wall often show the shape clearly before anyone visits.
Open up inside
Floorboards or a ceiling strip are lifted along the affected wall to expose the joists. We fit noggins where joists run alongside, and plan furniture moves with you, since this is the most disruptive part of the job.
Close up and make good
Boards are relaid, plaster and outside fixings made good, and cracked joints repointed. You receive a record of the restraint positions, which helps if you sell or if an engineer needs to check the wall again later.
Signs you may need bowing wall repairs
- Internal plaster cracks where a wall meets the ceiling
- Gutters or the roof edge no longer lining up with the wall
- A visible belly in the wall when you sight along it
How much will bowing wall repairs cost in Llangefni?
These are guide prices for Llangefni, using Wales rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Lateral restraint for a typical gable | £920 – £2,750 | per wall |
| Remedial restraint ties installed | £25 – £55 | per tie |
| Partial rebuild of a badly distorted sectionest. | £2,750 – £7,350 | per section |
Which repair method suits a home in Llangefni?
Lateral restraint straps
Galvanised or stainless straps are fixed across three or more joists or rafters, turned down against the inside face of the wall and fixed into the masonry. They work well at ceiling and roof level, where the fixings stay hidden.
Best for: Gables and walls bowing near ceiling or roof level
Restraint ties into the floor
Stainless restraint ties are drilled through the wall and fixed into the floor joists or into blocking between them. Where joists run parallel, noggins are fitted across several joists so the tie has something solid to hold. A neat plate or a buried fixing is left on the outside face.
Best for: Walls bowing at floor level where joists run alongside
Rules for bowing wall repairs in Wales
In Wales, the Welsh version of the Building Regulations applies. Underpinning and other work that alters or strengthens the structure needs building control approval and inspection; like-for-like repairs often do not. The Party Wall etc. Act 1996 applies to work on party walls and excavation close to a neighbour’s foundations.
Bowing wall repairs in Llangefni: questions and answers
How much will bowing wall repairs cost in Llangefni?
Guide prices for bowing wall repairs in Llangefni start from about £920 per wall, including VAT, on Wales rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Llangefni?
Yes, Llangefni is covered, along with postcode districts LL77. We also cover nearby Bangor and Caernarfon.
Is the ground in Gwynedd prone to subsidence?
Gwynedd and Anglesey are mostly hard rock with glacial deposits, so clay shrinkage is uncommon. Historic slate quarrying and metal mining have left tips and workings in places. Only an investigation can say why a particular building has moved.
Do restraint ties show on the outside?
Some do and some do not. Certain ties leave a small round or square plate on the outside face, while others are fully recessed and pointed over. Straps fitted from inside leave no outside trace at all. We agree the finish with you before work starts.
What is lateral restraint?
Lateral restraint is the connection that stops a wall moving sideways, provided by tying it to the floors and roof. Older houses often have little or none, especially where joists run parallel to the wall. Remedial ties and straps add that connection after the event.
Other structural repairs in Llangefni
- Resin injection ground stabilisation
- Lintel replacement
- Floor joist repairs
- Subsidence repairs
- Crack stitching
Bowing wall repairs near Llangefni
A no-obligation written quote for a bowing wall in Llangefni sets out the ties, the straps and any rebuild as separate items.