Mini and small concrete pumps let you place concrete for a house extension or renovation without a mixer truck ever reaching the back of the property. The pump sits at the kerb, a hose runs down the side alley or through the house, and the concrete lands where the formwork is.
For most domestic pours in Hatfield and London, that is the difference between a two hour job and a full day of barrowing. Easypump Concrete Ltd pumps extension footings, slabs and internal floors every week, and this guide covers what happens on site.
What Counts as a Mini and Small Concrete Pump
A mini concrete pump, usually called a line pump or trailer pump, is a compact unit towed behind a van and parked on the road or driveway. Concrete is tipped from the mixer truck into the pump hopper and pushed through a hose line to the pour area.
The unit is roughly the size of a small car and needs one parking bay. Typical domestic figures are a 65mm to 100mm hose, runs of 30m to 100m, lifts of one or two storeys, and 10 to 40 cubic metres per hour depending on mix and line length.
The alternative is a boom pump, a lorry mounted arm that places concrete from above. It moves volume faster and reaches over buildings, but needs a firm, open setup area with overhead clearance. On a residential street with parked cars, a line pump is usually the only realistic option, which is why Easypump Concrete Ltd sends one to most extension jobs.
Why Barrowing Concrete Rarely Works on Extension Jobs
Barrowing is still the default on small builds, and it is where extension pours go wrong. Concrete has a working window, so a slow barrow chain can leave the last loads stiffening before placement, creating cold joints in a slab that should have been poured in one go.
The labour maths rarely gets checked either. Four people barrowing for six hours is 24 man hours, which often costs more than the pump hire itself, before you count the damage and the risk:
- Wheelbarrow wheels rut lawns and spill on block paving and patios
- A loaded barrow does not fit through a 700mm side gate with a step in it
- Running barrows over scaffold boards and uneven ground causes injuries
- Concrete spilled inside a finished house is expensive to put right
Extension and Renovation Jobs That Suit a Small Pump
Trench fill footings for a rear extension are the classic small pump job. The trenches sit behind the house, volumes land between 6 and 20 cubic metres, and the hose is walked along the trench so concrete drops where it is needed instead of being shovelled along.
Once blockwork is up, the oversite slab has a new problem: the walls are now in the way. Internal pours are the strongest case of all, because there is no barrow route that does not involve carrying concrete through a finished home.
Jobs Easypump Concrete Ltd regularly pumps:
- Rear extension footings and trench fill, single and double storey
- Ground floor oversite slabs, fed over blockwork or through a door opening
- Garage conversions and internal floors, with the hose run through a window or temporary opening
- Basement, cellar and lightwell pours, where hand lowering is unsafe
- Garden room bases, sheds and driveways at the far end of a long garden
- First floor slabs and liquid screeds, where pumping is effectively the only method
Access Situations a Small Pump Solves
Most extension pours fail on access rather than volume. A 65mm hose fits through gaps that nothing else does, and only the pump needs kerb space while the mixer truck feeds it from behind.
Terraced properties with no rear access are handled by running hose through the hallway or over the roof. Sloping plots, soft lawns and landscaped gardens are fine because no vehicle crosses the ground.
Common access problems solved on site:
- Narrow side alleys and gates that stay in place
- Long back gardens needing 40m to 80m of hose
- Restricted street parking where only one bay is available
- Renovation interiors where the route runs through finished rooms
If you are unsure whether your site works, a short video of the route from the road to the pour area answers it in seconds.
Working Out How Much Concrete You Need
Volume is length x width x depth in metres, plus 5 to 10 percent for over dig. Trench fill catches people out, since 50mm of extra width across a long footing run adds up fast.
Rough guides for domestic work:
| Job | Typical volume |
| Single storey rear extension footings | 6 to 12 m³ |
| Ground floor oversite slab (20m² at 150mm) | 3 to 4 m³ |
| Garage conversion floor | 2 to 4 m³ |
| Driveway (50m² at 100mm) | 5 to 6 m³ |
| Garden room base | 2 to 3 m³ |
This is where volumetric or onsite mixed concrete earns its place. Easypump Concrete Ltd batches the mix on your site, so quantities can be adjusted as the pour progresses and you pay for what you actually use instead of ordering a full extra load you cannot return.
Mix design matters too. Footings usually take C25 or GEN3 and slabs sit between C25 and C35, but pumped concrete needs the right slump and aggregate size to travel cleanly, so tell your supplier it is being pumped.
What Happens on Pour Day
The crew arrives ahead of the concrete, positions the pump and runs out the hose line, which takes 30 to 45 minutes. The line is then primed with grout so the first concrete does not block.
Once the truck starts discharging, one operative controls the hose end while your team levels and tamps behind. The operator controls flow, so it slows for detailed areas and opens up across a slab.
The order of the day:
- Pump positioned and hose line run out
- Line primed
- Concrete discharged into the hopper
- Placing, with your team finishing behind the hose
- Line washed out and hose packed down
Preparing Your Site Before the Pump Arrives
A prepared site is the biggest factor in how fast the pour goes. Waiting time is dead time and the most avoidable cost on the job.
Have this ready before the day:
- The hose route cleared of tools, materials and vegetation
- A parking bay reserved for the pump plus space for the mixer truck
- Formwork, DPM, insulation and reinforcement installed and signed off
- Mix, volume and any admixtures confirmed with your supplier
- Enough labour on site to finish at the pump’s rate
- A washout area, water access and protection on internal routes
What Affects the Cost of Small Pump Hire
There is no flat rate for pump hire, but the variables are predictable. Volume, hose length and vertical lift drive most of it, since longer lines mean more setup, more washout and more time on site.
Setup complexity is the other factor, particularly when pumping through a house or over a roof. Booking concrete and pump from Easypump Concrete Ltd together usually costs less than coordinating two suppliers and risking a gap between delivery and placement.
Frequently Asked Questions
Can a concrete pump reach the back garden of a terraced house?
Yes. A line pump parked on the street can run hose through the property, along a side alley or over the roof. Terraced rear extensions are one of the most common jobs Easypump Concrete Ltd pumps.
Do I need a mini pump or a boom pump for my extension?
For most domestic extensions a mini line pump is the right choice. A boom pump becomes worthwhile on larger volumes, high vertical lifts, or open sites with room for a lorry to set up on outriggers.
How long does an extension pour take?
Many domestic pours are finished within two to four hours from arrival to pack down, depending on volume, line length and how many people are finishing behind the pump.
How much notice do I need to book?
Book as early as possible, particularly for morning slots. Short notice and next day bookings are often possible in Hatfield and nearby areas, subject to availability.
Can you supply the concrete and the pump together?
Yes. Easypump Concrete Ltd supplies ready mix, volumetric and onsite mixed concrete along with the pump and a trained operator, so there is one point of contact and one schedule.
Booking a Pump for Your Extension
If your pour sits behind the house, up a slope, through a gate or inside a building, a mini concrete pump is almost always the faster and cleaner way to place it. Easypump Concrete Ltd covers London, Hertfordshire, Bedfordshire, Buckinghamshire, Essex and Northampton from Hatfield.
Call 01582 550287 or email admin@easypump.co.uk with your site address, pour date, estimated volume and a photo of the access route, and we will confirm the right pump and send a clear, no obligation quote.
Easypump Concrete Ltd 165 Parkhouse Ct, Hatfield AL10 9RD 01582 550287 | admin@easypump.co.uk