It is a question we get asked a lot and it is a fair one. There are several different piling methods out there and unless you work in construction, there is no reason you would know which one is right for your project. The honest answer is that it depends on your ground conditions, your site constraints, and what you are trying to build. But we can give you a decent overview of what we see most often across the North West and why.
We have been working across Lancashire, Greater Manchester, Merseyside, and the surrounding areas since 2010, and over that time you develop a feel for the ground. Not literally, obviously. But you start to recognise the patterns. Certain areas come with certain challenges, and having done hundreds of jobs across the region means we can generally give people a pretty accurate steer before we have even been out to the site.
Mini Piling: The One We Use Most
If you are a homeowner in the North West planning an extension, there is a good chance mini piling is what you are going to need. It is the most common solution we use for domestic projects across the region and for good reason. It works well in restricted spaces, it does not require heavy machinery that would never fit down a side passage, and it gets you down to a solid bearing layer without causing chaos on a residential street.
The way it works is straightforward enough. We drive steel piles into the ground, using our Cobra D500 rigs or Grundomat-style moles, until they reach a stratum that can properly support the load. Depending on the ground, that might be three metres down or it might be eight or nine. In Manchester and Wigan, the older housing stock means we are almost always dealing with shallow original foundations that were never built to carry the kind of loads a modern extension puts on them. Mini piling solves that problem cleanly and efficiently.
It is also the go-to solution when the ground in the upper layers is weak, made up, or simply too unstable to build on conventionally. A lot of older plots in the North West have ground that has been disturbed over the years, particularly in areas with industrial heritage, and mini piling bypasses all of that and anchors into something reliable underneath.
Auger Piling: When the Site Allows for It
Auger piling tends to come into play on commercial projects or larger new build developments where there is more space to work with and the loads being placed on the ground are considerably higher. The process involves boring into the ground with a large rotating auger and then filling the resulting hole with concrete to form the pile. It is a clean method and relatively quiet compared to some alternatives, which makes it workable even on sites close to existing buildings.
Across parts of Lancashire and Greater Manchester, where you have deep cohesive clays, auger piling performs very well. In areas like Preston and Burnley, we use it on commercial developments where the ground conditions suit it and where the project scale justifies bringing in the relevant equipment. For most domestic jobs it is not the right fit, but when the conditions are right it is a very efficient solution.
Restricted Access Piling: The One That Opens Up Awkward Sites
This is possibly the service we are most asked about by homeowners who have already been told by another contractor that their site is too difficult to work on. The North West has a huge amount of terraced housing, particularly in Liverpool, Blackburn, and across Greater Manchester, where access to rear gardens is often through a narrow passage or a shared back entry. Standard piling rigs simply cannot get through those gaps.
Our restricted access piling capability uses compact, low-headroom equipment that is specifically designed for these kinds of sites. We can work in spaces with very limited overhead clearance and very limited width. It means that homeowners in terraced housing are not automatically ruled out of extending their homes because of the site layout, which is something that matters a lot to us. We would rather find a way to help than tell someone it cannot be done.
Underpinning: When the House Itself Is the Problem
Not every job starts with a new build or an extension. Sometimes we get called out because an existing property is showing signs of movement, cracking, or subsidence. That is a different kind of problem and it calls for a different approach.
Our underpinning work involves strengthening and deepening the existing foundation so that the building has a stable base going forward. In the North West, the clay-heavy soils are one of the main culprits when it comes to subsidence. Clay shrinks when it dries out in a hot summer and swells again when the rain returns, and that cycle of movement gradually takes its toll on older shallow foundations. We carry out underpinning across the region as part of our wider groundwork services and it is work we take seriously because the consequences of getting it wrong are significant.
So Which One Do You Need?
The straightforward answer is that you need someone to come and look at your site. There is only so much we can tell you without seeing the ground conditions, understanding your access constraints, and knowing what the build is going to put on the foundations. That is why we offer a free site visit with no obligation attached.
If you are based in Lancaster, Bolton, Morecambe, or anywhere else across the North West, give us a call or fill in the form on our contact page. Our North West number is 01254 314010 and we are in the office Monday to Friday.
