This is perhaps the most popular form of underpinning as it allows you to drill down to great depths to find bearing capacity, as per engineer specifications, for new footings. We have the capability to drill piers from 75mm to 750 mm in diameter and up to 10 metres in depth with our vast array of machinery. We have drilling rigs to suit all conditions from commercial drilling machines to portable rigs that can be used inside restricted areas when ceilings are as low as 1.8 metres, for example, inside your home. These portable rigs have the capability of drilling down to a 6 metre depth.







Firstly, a small pit is dug to a depth of 600 - 700mm below the bottom of the existing footing. Then we proceed to drill to the required depth as per your engineer’s specification. Once we are at the required depth we will dig under the existing footing to the width of that footing.

A steel reinforcing cage the depth of the pier is then placed down the pier with another cage known as a headstock joined from the top of the cage to underneath the existing footing. The pier is then filled with concrete which covers the headstock. A void is left between the top of the headstock and the bottom of the existing footing. This void is where a jack is placed for jacking to bring the walls of the building as close to original level as possible. Once the building is jacked the void is packed with dry pack grout and the pit is backfilled.