A musty cabin, fogged-up windows or damp cushions: during the winter, moisture can accumulate unnoticed on board. Using your boat less does not mean the interior will stay dry on its own. By inspecting, cleaning, ventilating and checking, you can reduce the risk of moisture problems. These eight tips will help you get started.
Tip 1: make a distinction between condensation and leaks
Condensation can occur when moist air cools against cold windows, the hull or other surfaces. Leaks, on the other hand, bring water in from the outside. Therefore, do not only look for fogged-up windows, but also for moisture rings around hatches, wet storage compartments and water returning after rain. A moisture absorber cannot repair a leaking hatch.
Tip 2: check windows, hatches and seals
Inspect accessible seals and joints for visible damage. For deck and emergency hatches, look for dirty edges and signs of water ingress. Clear drains without damaging rubbers or sealant joints. Have recurring leaks inspected; applying extra sealant randomly can hide the cause from view.
Tip 3: store textiles clean and dry
Remove wet towels, clothing and bedding from on board. Dry boat cushions completely before storing them. If loose cushions can go to a dry storage area, that is often practical. If they stay on board, place them where possible so that air can circulate around them. Do not put damp textiles in a sealed bag or cupboard.
Tip 4: let air circulate without letting rain in
Good ventilation helps remove moist air when conditions allow. Keep existing ventilation facilities clear and check that a winter cover does not block them. Only leave cupboard doors or sofa covers open where it is safe and practical. Leaving a hatch open unattended is not a good solution if rain can get in.
Tip 5: make hidden moisture spots visible
Check under mattresses, behind back cushions and in corners where little air reaches. For suitable applications, you can look at an anti-condensation mat, but first check its suitability for the surface and use. Such a tool does not replace a dry surface or addressing water ingress. Also check whether the bilge and storage spaces retain unnecessary moisture.
Tip 6: use a moisture absorber as support
A moisture absorber can support the absorption of humidity in a limited space. For example, look at the Absodry 450g box dehumidifier or the NO DAMP hanging moisture absorber bag. Read for each product what application it is intended for and how to place or hang it safely.
Make sure a collection reservoir cannot fall over and prevent collected liquid from coming into contact with textiles, wood or metal. Check regularly whether emptying or replacement is necessary. Its effectiveness depends on the conditions; a moisture absorber is no guarantee against mould.
Tip 7: do not use electrical appliances without checking
An electric dehumidifier or heater requires a suitable installation and setup according to the manual. Check whether the device is intended for the temperature and space in which you want to use it. Discuss unattended use and shore power with the storage facility or marina. A household appliance is not automatically suitable for long-term use on board.
Tip 8: plan regular inspection times
Check the cabin during the winter and after prolonged rain or strong winds. Look for new moisture spots, a recurring smell and the condition of textiles and woodwork. Note what you find, so you can see whether a measure helps. Arrange someone who can check when you are not at the boat yourself for a longer period.
What do you do if you already see mould?
First address the moisture source. For cleaning, choose a product that is suitable for the affected material and follow the usage and safety instructions. Do not mix cleaning products. Have extensive, recurring or hard-to-reach damage assessed by a specialist instead of just wiping away the visible spots.
A dry winter starts with a regular routine
Check for leaks, let textiles dry and keep ventilation facilities clear. Look at the dehumidifier and maintenance product collections at Bootland to choose suitable aids. Always combine them with regular checks of your boat.