Serving all of the United Kingdom
Void filling covering underground voids in the United Kingdom
Describe what you are seeing at the property. A specialist looks at the signs, explains what is likely sitting below and sets out the filling method that fits the ground.
- Void survey first
- Fill checked after pumping
- Records for building control
Our void filling services
Sinkhole remediation
Identifying and repairing sinkhole collapses safely, wherever they occur in the UK.
Read about sinkhole remediationSoil stabilisation
Strengthening weak or unstable ground beneath structures throughout the UK.
Read about soil stabilisationVoid filling
Restoring ground support under floors, foundations and roads across the UK.
Read about void filling3 Services covered 20 Towns across the United Kingdom Free Initial quote
Does your property show these signs?
Voids leave traces in the fabric of a building and in historical records. Any of the following is worth a void survey, even where the underlying cause turns out to be straightforward.
Signs worth having checked
- A concrete floor slab that rings hollow when tapped or has pulled away from the surrounding walls
- Cracks in walls or floor surfaces that have been widening over time
- A dip or sunken area in a driveway, garden or road surface
- Water disappearing underground following a burst pipe or leaking drain
- A mining report, old site plan or ground investigation showing shafts, cellars, wells or tanks below the site
- A requirement from a building control officer or mortgage lender for the ground to be stabilised before work can proceed
What causes voids to open up underground in the United Kingdom
Ground across the United Kingdom can conceal mine workings, buried structures and eroded soil that together account for most void filling jobs. The causes seen most often are:
- Old mine shafts or workings left open beneath the site
- Soil carried away from under a floor slab or hard standing by a leaking drain or moving water
- Disused cellars, wells, culverts or tanks left unfilled after a building was demolished
- Gaps that have grown around poorly backfilled trenches or shallow foundations over time
Void survey first, fill second
Ground that appears firm at the surface can conceal a large empty space, and the correct filling material depends on what created it. Where underground voids are suspected, a local specialist carries out a void survey using probe drilling or ground penetrating radar to establish the extent and depth. From those findings, the specialist selects grout, foam concrete or resin to match the size of the void, the surrounding ground and the structure sitting above.
Towns and areas covered
Pick your town below to see local detail on void filling work. Specialists are active across the United Kingdom.
Get a free quote today
Describe the problem and a specialist covering your area will come back with a clear answer on the cause, the work needed, and the cost.