Caernarfon · Gwynedd
Retaining wall repairs in Caernarfon
Retaining wall repairs in Caernarfon begin with height and what sits on top. A low wall behind a flower bed is a very different job from one holding up a drive, and the taller or more heavily loaded walls need an engineer’s design.
Guide price from£460per wall inc VAT
- Postcodes
- LL55
- Population
- about 10,000
- Area
- Gwynedd
- Pricing region
- Wales
Is Gwynedd prone to ground movement?
We cover Caernarfon and its postcode districts LL55, part of Gwynedd, with a population of roughly 10,000. Neighbouring towns we cover: Llangefni (8 miles), Bangor (9 miles) and Pwllheli (18 miles).
Shrinkable clay is less common in Gwynedd than in south-east England. Old metal-mine shafts and workings are recorded in places, so mining searches are routine for some properties. Housing stock in Gwynedd: Slate and stone terraces, chapels and cottages, Victorian seaside houses and post-war estates.
Methods for retaining wall repairs
Rebuilding on new footings
Where the whole wall is failing, it is replaced with a new retaining wall on a properly sized footing, with free-draining backfill, a membrane, weep holes and a drain at the base. Reinforced blockwork faced in brick or stone is common, so the wall matches its surroundings.
Best for: Walls failing along their length, or retaining significant height
Structural repair and partial rebuild
A leaning or bulging section is taken down, the soil behind dug out and supported, and the wall rebuilt on a new footing with drainage and, where specified, reinforcement tied into the sound wall either side. The engineer’s design sets footing size and wall thickness.
Best for: A section that has moved while the rest stays sound
From first photo to finished repair
Photos and measurements
Send photos of the whole wall from the front and the end, so any lean shows, plus close-ups of cracks and weep holes. Tell us roughly how tall it is and what sits at the top, such as lawn, patio, drive or a building.
Written quote
You receive a no-obligation written quote covering demolition, excavation, temporary support, the footing, the new or repaired wall, drainage and spoil removal. It becomes a fixed price in writing once the repair is specified.
Build and drain
The failing section is taken down, the soil supported in short lengths, and the footing cast. The wall is rebuilt with drainage behind it, backfilled with free-draining material, and building control inspects where the work needs it.
Symptoms that point to retaining wall repairs
- No weep holes, or weep holes that never seem to drain
- Wall leaning forward, or bulging out in the middle of its length
- Bricks or blocks pushed out of line, or coping stones sliding off
Guide prices for retaining wall repairs in Caernarfon
Guide prices below are for homes in Caernarfon, on Wales rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Minor repairs and drainage | £460 – £1,850 | per wall |
| Structural repair or partial rebuild | £2,750 – £13,800 | per wall |
| New retaining wall | £185 – £415 | per m² of wall face |
Rules for retaining 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.
Frequently asked questions
What is the price of retaining wall repairs in Caernarfon?
Guide prices for retaining wall repairs in Caernarfon start from about £460 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 carry out retaining wall repairs in Caernarfon?
Yes. We take enquiries from across Caernarfon, including LL55, and from nearby places such as Llangefni and Bangor. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Caernarfon cause cracking?
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.
Can a bulging retaining wall be saved?
Sometimes, if the bulge is small, the wall is low and the cause is mainly poor drainage. Improving drainage and repairing the face may stop further movement. A wall that has bulged a lot, cracked through or moved at its base usually needs that section rebuilding on a proper footing.
What are weep holes in a retaining wall?
Weep holes are small openings near the base of a retaining wall that let water drain out from the soil behind it. Without them, water builds up and adds hydrostatic pressure that can push the wall over. They work best with a drainage layer behind the wall, and they need to be kept clear.
More repairs we carry out in Caernarfon
- Bay window subsidence repairs
- Concrete repairs
- Floor joist repairs
- Brick arch repairs
- Chimney stack repairs
Retaining wall repairs near Caernarfon
For a guide price on retaining wall repairs in Caernarfon, use the quote tool or send photos with the wall’s rough height and what sits behind it.