Does buildings insurance cover underfloor heating leaks in Germany?
In short
Yes. In Germany, buildings insurance with mains water cover (Leitungswasser) pays for underfloor heating leaks: leak detection, opening and closing the screed, the pipe repair, drying and the floor covering. It does not pay for wear without a leak, sludge in the circuits or a faulty actuator. Leak detection usually costs EUR 200 to 600.
Published prices for leak detection, drying and smaller pipe damage, as of 2026.
Example
Typical range
Leak detection, depending on the method
about EUR 200 to 600
Building dryer hired from a specialist
about EUR 6 to 15 net a day
Electricity per dryer
about EUR 3 to 7 a day
Drying a wet insulation layer
about 2 to 8 weeks
Local pipe damage, drying and plaster repair
about EUR 800 to 2,800
Guide values as of October 2026 from published trade and hire prices.
The costs for opening and closing the screed,
the pipe joint and the floor covering in the example are guide values from quoting practice.
Worked example
Living room of 30 square metres, tiles, pressure falling for weeks
The owner tops up water more and more often, then a damp edge appears on the wall. He reports the damage and has the leak located.
Leak detection with thermal imaging and pressure test
about EUR 200 to 600
Open the screed, join the pipe, close the screed
about EUR 600 to 1,500
Two dryers for three weeks, hire and electricity
about EUR 380 to 920
Replace tiles in the affected area
about EUR 800 to 2,000
Together about EUR 2,000 to 5,000. With mains water cover the buildings insurance pays, minus any agreed deductible. Without it the owner pays everything.
Why underfloor heating counts as mains water
The heating pipes in the screed are pipes of a heating system. The German insurers' model terms count water escaping from heating systems as mains water, including heating water with antifreeze. They also cover breakage of heating pipes inside the building, from frost and from other causes.
Inside the building means the whole structure including the floor slab. Pipes below the floor slab are only covered under the model terms if agreed. For underfloor heating in the screed this rarely matters, for supply pipes under the house it does.
Cause
Does buildings insurance pay?
Heating pipe in the screed leaks, water escapes
yes: pipe, consequential damage and drying
Pipe hit when drilling
yes as breakage, possible cut for gross negligence
Frost damage in an unheated house
yes, but cut if it was neither heated nor drained
Leaking fitting on the manifold
consequential damage yes, the part itself depends on the tariff
Circuit stays cold, air or sludge
no, no escaping water and no breakage
Circulation pump or actuator faulty
no, that is wear
Pipe below the floor slab
only if included in the policy
What is paid in a claim
If the loss is insured, the insurer pays the leak search as costs of establishing the loss, as far as they were reasonable (section 85(1) VVG). It also pays for opening the screed at the leak, repairing the pipe, closing it, the floor covering in the affected area and drying screed and insulation.
Tiles, parquet or carpet fixed to the house belong to the building. If the tiles can no longer be bought, there is often a dispute about whether the whole room is relaid. Clarify this with the insurer before you place the order. If the insurer may cut its payment for gross negligence, section 85(3) VVG allows it to cut the search costs in the same way.
How to spot a leak
The most important sign is the system pressure: if it keeps falling on the gauge and you often top up water, the heating is losing water somewhere. Other signs are damp or dark patches on the floor, loose tiles, a musty smell or damp in the wall below.
The model terms require water-carrying systems to be kept in proper condition and defects to be fixed without delay. If you top up for months and do nothing, you risk a cut when the screed below is soaked.
Gross negligence when drilling
A drilled heating pipe is a common claim after fitting furniture or a door. Under section 81(2) VVG the insurer may cut its payment for gross negligence in proportion to the degree of fault. Drilling into a heated floor without a pipe plan or thermal image can count as that.
Many tariffs waive this defence. If your policy says so, the insurer pays in full.
Tenants and owner-occupied flats
In a rented flat, the underfloor heating is part of the building. Report the damage to the landlord at once; the landlord's buildings insurance is responsible. Your own furniture and rugs are covered by your contents insurance.
In an owner-occupied flat, the property manager reports the damage to the owners' association's buildings insurance. Even if the heating is only in your flat, that policy usually applies.
Step by step
If water is visible, close the affected circuit at the manifold.
Photograph damp patches, the pressure gauge and note how much you top up.
Report the damage to your buildings insurer; as a tenant, to your landlord.
Ask whether the insurer sends a specialist or you appoint one yourself.
Have the leak located before any screed is opened.
Let drying finish with moisture readings before the floor is closed.
Submit readings, photos and invoices together.
Checklist
Mains water cover including breakage of heating pipes
Search and exposure costs named in the policy
Gross negligence covered
Pipes below the floor slab included if pipes run there
System pressure checked regularly
Pipe layout plan kept
Common mistakes
Topping up water for months without having the pressure loss checked
Breaking open large areas of screed before the leak is located
Drilling into a heated floor without a pipe plan
Closing the screed before the insulation is dry
Hiring tradespeople yourself as a tenant instead of telling the landlord
Questions and answers
Frequently asked
Does contents insurance pay for a leaking underfloor heating?
Only for your movable belongings such as furniture and loose rugs.
The pipe, screed and fixed floor covering are a matter for the buildings insurance.
What does repairing a leaking underfloor heating cost?
Detection, opening, pipe joint, drying and covering usually add up to EUR 2,000 to 5,000.
Large areas or several leaks can cost much more.
Does the insurer pay if the heating only loses pressure?
Pressure loss points to a leak.
If the search finds a pipe break with escaping water, it is covered.
If no insured cause is found, you often pay for the search yourself.
Is a faulty heating manifold covered?
If water escapes, the consequential damage to the building is covered.
Whether the part itself is replaced depends on whether it broke and on your tariff.
Do I have to declare underfloor heating when taking out cover?
With a policy based on the 1914 value, the valuation form asks about fittings,
and underfloor heating belongs there.
Otherwise the sum insured may be too low.
Who pays if a tradesperson drills into the pipe?
First your buildings insurance.
As far as it pays, your claim against the firm passes to the insurer under section 86(1) VVG,
