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Calculate the antifreeze, winterise the cooling circuit

To winterise with protection down to minus twenty-five degrees,

calculate on a mix of roughly forty per cent concentrate.

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The colder it gets, the more concentrate: for -25 degrees about 40 per cent in the circuit.

The cooling circuit, the heads, the water tank and the pipework must be drained or protected before the first frost. A burst heat exchanger costs more than ten winters of antifreeze, and it often does not split open until the spring, when nobody is thinking about winter any more.

Frost damage is not covered in most policies: frost counts as normal exposure to the weather and therefore as a matter of maintenance, not as a loss event.

What is covered is consequential damage arising from an insured event. If a storm tears open the canvas cover and water gets in and then freezes, the cause is the storm. Anyone who forgets the winter check, by contrast, is left with a maintenance problem.

Frequently asked questions

Is frost damage insured?

Usually not.

Frost counts as normal exposure to the weather and therefore as a maintenance matter.

What about consequential damage?

If an insured event set off the frost damage, for instance a storm that tears the cover open,

then it is the cause that counts.

Worked out for your type of boat

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