Maintenance & problems

Where is the damp in your Hymer and what does it cost to repair?

A Hymer that feels soft at the roof edge or around the roof hatch is almost certainly dealing with penetrating damp.

Damp patches in the interior of a Hymer camper

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Where is the damp in your Hymer and what does it cost to repair?

A Hymer that feels soft at the roof edge or around the roof hatch is almost certainly dealing with penetrating damp. Repair is possible, but often expensive and time-consuming. Sometimes selling is the better choice.

The exact cost depends on how far the damp has penetrated and whether wood rot has developed.

Hymer and water damage: a known problem

Hymer is known for its solid construction, but no camper is immune to water damage. The most common weak points on a Hymer are the roof, roof hatches, corner joints and window rubbers. Especially on models from before 2005, the sealant around roof hatches and roof edges can dry out and crack, allowing water to seep in slowly. The corner joints, where the side walls meet the roof, are also a classic source of moisture. A thorough moisture check is therefore essential when buying or maintaining one.

How does Hymer score on watertightness? Generally well, but age and maintenance play a big role. A Hymer that has always stood outside without regular sealant checks will leak sooner than one that has been stored. Look out for damp patches in the corners of the ceiling, a musty smell, or discoloured upholstery. These are often the first signs.

Repair or sell?

Small leaks, such as a roof hatch that needs to be resealed, are relatively quick to fix. But once moisture has got into the walls or roof, it becomes a different story. The interior lining then has to be removed, the insulation replaced and possibly wooden parts repaired. Costs then quickly add up, often between 1,500 and 5,000 euros or more, depending on the extent. Moreover, there is always a risk of hidden damage.

Water damage also has a major impact on the market value of your motorhome. A camper with a history of moisture is harder to sell and fetches considerably less. Some buyers immediately back off as soon as they hear the word 'moisture'. That is why it is important to be realistic: is the repair still worthwhile, or are you throwing money into a bottomless pit?

Check all sealant seams and rubbers annually.
If in doubt, have a professional moisture check carried out.
Weigh up the repair costs against the current value of your Hymer.
Consider selling if the damage is too extensive or the camper is getting older.

Are you unsure whether a repair is still worth it? Then make sure you get proper advice. Sometimes it is financially more attractive to sell the camper in its current state and invest in a younger model. We regularly buy campers with water damage and give you a fair price, even if there are moisture problems.

Frequently asked questions

Also frequently asked

How do I recognise water damage in my Hymer?

Look out for damp patches, a musty smell, discoloured upholstery or a wall that feels soft. A moisture meter will give you certainty.

What does it cost to repair a leaking roof on a Hymer?

A simple resealing costs a few hundred euros, but with penetrating damp and wood rot, the bill can quickly rise to 1,500 to 5,000 euros or more.

Can I still sell my Hymer with water damage?

Yes, but the price will be lower. Specialist buyers take over campers with damp damage, often at a fair price based on the condition.

How can I trace a leak in my Hymer?

You can trace a leak in your Hymer by shining a strong torch along roof edges, roof hatches, corner seams and window rubbers in daylight. Look for damp rings, discolouration, blistering paint or a musty smell. A moisture meter will give you certainty about elevated readings in walls or the roof.

How can I make my Hymer roof watertight?

To make the roof of your Hymer watertight, first clean the seams and sealant edges thoroughly and remove old, loose sealant. Then apply a suitable caravan or camper sealant to all seams, roof penetrations and roof hatches. Allow the sealant to cure for at least 24 hours before exposing the roof to water again.

How long is the warranty on a Hymer camper?

A new Hymer camper generally comes with a 2-year manufacturer's warranty, but for the watertightness of the bodywork, Hymer often gives 6 to 10 years of warranty, depending on the year and model. Always check the warranty conditions and the service booklet, as periodic sealant checks are usually mandatory to keep the warranty valid.