House subsidence is when the ground beneath your home sinks or shifts, causing your foundation to move unevenly. It often leads to cracks in walls, sloping floors, sticking windows and long-term structural problems.

Typical signs include cracks in walls, gaps around windows and doors, uneven or sloping floors, sticking doors, cracks in brickwork, and gaps between skirting boards and the floor.

Mainmark repairs subsidence using non-invasive resin injection and re-levelling technologies. Our Teretek® engineered resin fills voids, strengthens weak ground, and lifts settled foundations with minimal disruption.

Most residential subsidence repairs using resin injection are completed in just one day, depending on the size of the home and the extent of ground movement.

Yes. Resin injection strengthens and stabilises the ground beneath your foundation, reducing the risk of future movement when combined with good site drainage and property maintenance.

Mainmark provides subsidence repair services across Australia, including Sydney, Melbourne, Brisbane, Perth, Adelaide, Hobart, Canberra and regional areas.

Subsidence usually worsens over time. Cracks grow, floors become more uneven, doors and windows jam, and repair costs increase. Early intervention is the most cost-effective approach.

Insurance coverage varies. Many policies do not cover gradual ground movement, but they may cover sudden events such as burst pipes contributing to subsidence. Always check your policy or speak with your insurer.

Subsidence can lead to structural instability if left untreated. Early signs may look minor, but ongoing ground movement can compromise the safety and value of your home.

You can contact Mainmark to arrange a professional site inspection. Our engineers will assess the cause of the subsidence and recommend the best repair solution for your home.