Rising damp in Semaphore, South Australia

If a wall in your Semaphore house is blooming white, shedding render or losing its mortar, the useful first step is a diagnosis rather than a quote. Rising Damp Adelaide arranges that: readings through the wall, the levels outside, and a written finding.

Salt damp in Semaphore

Semaphore adds a complication the inland suburbs do not have. Close to the water the groundwater itself carries more salt, and the sea air deposits more on the outside of the wall, so masonry here can be loading salt from both faces at once. Limestone in particular suffers, being soft and highly porous. When we assess coastal stock the readings are taken at more heights than usual, because the profile of a wall drawing salt from the ground looks different from one weathering from the outside, and the treatments are not the same.

Why it shows up when it does

Semaphore is largely limestone, sandstone and brick, 1880s onward, and the damp course position is none in the oldest stock. Those two facts narrow the diagnosis a long way before anyone touches the wall — the material decides whether the water travels in the stone or in the mortar, and the era decides whether there is a barrier to have failed in the first place.

Worth remembering that Adelaide is not a wet city. It gets less rain than Hobart does. What it has is the swing between a wet winter and a genuinely hot dry summer, and that swing is the engine that drives salt into the stone.

Arranging an assessment in Semaphore

Assessment and written diagnosis cost nothing. A fixed price follows, itemised, so you can see what is drainage, what is damp course and what is stone repair.

Nearby: Port Adelaide, Thebarton, Brompton, Glenelg.