Foundation problems in Bromley, sorted properly.

The problems we see most

Stepped cracking through brickwork, doors and sash windows that have stopped closing, floors that slope towards a bay, gaps opening where a rear extension meets the original house, tile-line steps above the lintels. In Bromley these usually trace back to shrinkable London Clay drying out under mature street trees through a long summer, shallow Victorian footings that were never deep enough for today's drier ground, or a slow leak from a cracked clay drain quietly washing fines out from under a footing.

What actually fixes it

There are three real routes, depending on what the ground and the cracks are telling you.

• Resin injection. Structural polyurethane geopolymer pumped through small ports into the soil under the footing. Lifts and re-levels a property in 24 to 48 hours with no excavation and no need to move out. The right answer where the ground will take it.
• Traditional mass-concrete underpinning in hand-dug pins. The long-life answer where movement is serious, the soil rules resin out, or an insurer wants belt-and-braces.
• Cause-side repair. Drain lining or replacement, root barriers, tree management. Often the real fix, because stopping the water or the roots stops the movement without lifting a single brick.

A proper survey (level monitoring, CCTV drain survey, trial pits where needed) tells you which of the three your house actually needs.