I’ve handled property damage claims for eleven years, and the file that changed how I look at trees was a modest single-story house with a silver maple standing about nine feet from the corner of the foundation. The owners had lived there for eighteen years with no issues, then one dry summer produced a series of cracks through the foundation wall and a door that stopped closing properly almost overnight. The claim got denied — gradual, foreseeable soil movement from root activity isn’t the kind of sudden event most policies are written to cover — and the homeowners were furious that nobody had ever told them a healthy, established tree could do this to a house that had stood fine for decades.
Category: Site & Groundwork
Soil Type and What It Does to Slabs
I spent six years running penetrometer tests and reading soil reports for a geotechnical firm before I started doing slab assessments on the inspection side, and the sample that changed how I explain this to buyers came from a house in Adelaide with a crack running diagonally across the garage floor. The owner assumed it was a shrinkage crack from when the slab was poured. The soil test told a different story: Keswick clay directly under the slab, no engineered fill between them, and a crack pattern that lined up exactly with where the clay had been drying and shrinking fastest through the previous summer.
Cut-and-Fill Problems Under the Slab: A Christchurch Inspection View
The crack in the garage floor was only 4 mm wide, but it ran arrow-straight from the roller door corner back toward the house, and it lined up almost exactly with a line I could see in the section’s old survey plan — the point where the original ground had been cut back half a metre to level the building pad. The agent wanted to call it shrinkage. I’d already probed both sides of that line with a hand auger, and the fill side gave way another 40 mm before hitting anything firm. That’s not shrinkage. That’s eleven years of a cut-and-fill pad settling unevenly, and the slab had been quietly telling everyone about it the whole time.
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Spalling Concrete: Why It Shows Up on Every Adelaide Report
I’ve bought three houses in Adelaide’s inner north and middle ring over the past nine years, and every single pre-purchase report has flagged spalling somewhere on the property — twice on the driveway, once on a side path nobody had walked on in years. The first time I saw the word I assumed it meant the concrete was structurally compromised and nearly walked away from a deal I still own and rent out today. It wasn’t structural. It was surface damage, and once I understood what actually causes it, I stopped panicking every time it showed up on a report.
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Retaining Wall Failure Signs on Christchurch Sections
The wall was bulging maybe 40mm out of true at its midpoint, and the vendor had painted it the same colour as the fence the year before, which is a trick I’ve seen often enough that I now check for suspiciously fresh paint on any retaining structure over a metre high. This particular section in the eastern suburbs had come through the earthquake sequence with a TC2 land classification, and the wall’s lean lined up almost exactly with the direction the ground had shifted during liquefaction. The builder’s report flagged it as requiring further investigation, and that single line changed the negotiation.
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Paving Settlement and Trip Hazards: A Perth Inspection Checklist
I laid pavers for eleven years before I picked up an inspection licence, so when I crouch down at a front entry and rock a paver with my palm, I’m not guessing what I’m feeling for. On a job in Perth’s outer eastern suburbs last month, six pavers near the letterbox rocked under light pressure, and when I lifted one the bedding sand underneath had washed into a hollow the size of a dinner plate. The owners had no idea — from standing height it just looked like a slightly uneven path.
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Concrete Driveway Cracks: What Inspectors Flag in Newcastle Homes
The crack ran from the expansion joint near the garage door in a dead straight diagonal, maybe 4mm wide at its widest point, and the vendor’s agent had already told the buyers it was “just concrete doing what concrete does.” I’ve written that exact line into more contract negotiations than I can count, and it’s rarely the whole story. On this one, in a suburb built over old workings from the Hunter coalfield, that diagonal crack combined with a step in the slab where it crossed the joint told me the movement was ongoing, not historical. The buyers renegotiated by close to $3,000 before settlement.
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