Damp, mildew and mould in Motorhomes

Damp, mildew and mold in Motorhomes

Dealing with damp in Motorhomes

Controlling damp and water ingress in your motorhome

The importance of motorhome damp checks. In motorhomes, one of the biggest serious problems is water ingress and damp. Water ingress can occur because of ill-fitting windows or roof lights, as well as accessories such as bike racks and ladders, anything, where a hole is drilled into the bodywork, can cause problems. The inside framework is most vulnerable and, by the time you’re aware of anything it could be too late. That’s opposed to damp, which could just manifest itself as a result of poor ventilation and/or a build-up of condensation from inside the vehicle from normal daily use.  How are motorhomes built?

Damp, mildew and mould in Motorhomes

Checking For And Dealing With Damp In Motorhomes

How to prevent mold and mildew in your motorhome. Prevention is better than cure, and it is far easier to try and stop damp, mildew and mould setting in than it is to get rid of. Taking care of mold problems will prevent permanent damage to your motorhome as well as such health problems as sneezing and asthma.

Here are some tips to help you try and avoid damp in your motorhome.

      • Try and keep some flow-through of air, with lower and upper-level ventilation around the living quarters.
      • Park your camper in direct sunlight when possible and open it completely. Sunlight inhibits further mold growth and kills live spores.
      • Avoid bringing wet or damp objects into your vehicle.
      • Always open the bathroom windows as much as possible, particularly straight after the shower has been used
      • We create a lot of condensation when we are sleeping, so try to have some ventilation at night when possible.
      • Always cook with your ventilator on or at least have the kitchen window open.
      • Regular cleaning of your campers interior will help keep dampness away. You can wipe down surfaces with an disinfectant product, remember to make sure everything is properly clean and dry before you lock up again.
      • If your motorhome is not in use for a while open all inside cupboards / cabinets.and doors. Remove all clothing.
      • If something gets spilled or water is splashed in the kitchen or bathroom, always clean it immediately.
      • Turn all cushions and mattresses on there sides
      • Sometimes you can see or smell mold, so have a check.
      • Never use jet washers or powerful hoses to wash your motorhome, as these can cause damage to external surfaces and force water into tiny gaps.
      • Use only mild soaps to avoid weakening seal and rubber fittings.
      • Most caravan er motorhome dealers can do a dampness check for you. It might be a good investment once a year. You could invest in your own damp meter. Although some can be brought for as little as £20, a good professional unit will cost  £100 – £200 new.

        Damp Meters – Moisture Meters


Portable, pin-type (resistance) moisture meters, are specialized yet versatile tools ideal for use in a wide range of commercial and domestic situations. Pin-type moisture meters are acknowledged as a reliable way to obtain percentage moisture readings in a wide range of materials. Wood and paper products are very sensitive to their moisture content. Physical properties are strongly affected by moisture content and high moisture content for a period of time may progressively degrade a material.

Average meter readings
Damp meters give reading indicating the presence of water expressed as a percentage.
• 0-15% are fine
• 15-20% needs attention
• 21-30% indicates remedial action is required
• Over 30% means structural damage and deterioration is occurring
Note that all wood in your motorhome contains some moisture, the amount can vary depending on time of year and current weather conditions.

What is tested during a Habitation check ?

A habitation check is a detailed examination of the living area of your motorhome or caravan. Basically this covers basics from checking seals, catches, cabinet doors all the way through to more advanced tests i.e. full gas pressure testing, damp checks and electrical charging functionality. It covers dangers such as fire risk, ventilation and gas systems as well as problem areas like damp, water systems, electrical systems and bodywork. You receive a full report afterwards with observations of problems identified and action required.

How Much Will it cost ?
Habitation Servicing appears to have an extremely wide price band, but usually take from 2-3 hours depending on the checklist. Workshops typically charge anything from £50-100 an hour.

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