You can often smell and sense damp before you can see it. When it finally does appear it’s a costly, unhealthy nuisance that has to be dealt with fast.

Rising damp destroys the comfort of a home, creating musty smells and causing or aggravating asthma and allergies.

If left untreated, rising damp can carry soluble salts up into the masonry, causing what’s known as efflorescence, which can eventually destroy foundations and in severe cases result in once solid masonry eroding and crumbling away.

Right now parts of Australia are in the grip of a rising damp and mould scourge.

According to Scott Lambert, national managing director of Dr Damp, it’s the worst he’s seen in 15 years of business.

5. Mildew on walls

5. Mildew on walls
Handyman Magazine

Warm, damp bathrooms encourage mould.

Fix it by using an anti-mould spray, ventilating and wiping walls dry after showering.

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6. Tide marks

6. Tide marks
Handyman Magazine

Paint and plaster show water stains and peeling.

Fix this by checking for and treating the source or replace the damp proof course.

Treat efflorescence

Treat efflorescence
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Damage occurs when soluble salts in the wall materials become moist then dry out, forming a shiny surface layer called efflorescence.

If the layer crystallises it can erode even the strongest materials.

Treatment begins with fixing leaks and a new damp proof course.

Regular maintenance should be done on plumbing, clearing the roof and gutters, plus checking potential drainage or underfloor ventilation.