Perhaps the solution to your problem is in the list of questions below?

The answers to the questions below, are indicative only, only the compromise and deed of sale are the contractual documents.

As the owner or tenant you are responsible for the maintenance of your home and its equipment. We advise you to perform all necessary maintenance, or those prescribed by the manufacturer.

  • Control that all your technical systems are working properly and that there are no error messages, strange noises or smell.
  • Regularly check your electrical, gas and water meters. Unusually high consumption is a good sign that something is wrong.
  • Control yearly all “soft joints” (silicone) interior (mostly bathroom) and exterior (usually around windows) for cracks. If you find cracks they must be redone typically every 2-5years. Silicone joints is not covered by any guarantee
  • Control and clean all sewers, interior and exterior yearly at least twice.
  • Regular maintenance of heating system by a professional (delay depends on your type of system).
  • Regular cleaning of your ventilation system and all ventilation roosters.
  • If you have drain holes in windows and window doors, these must be kept clean (does not apply to the outgoing triple glass windows of the zero energy house)
  • Façade wood, needs to be treated with oil/varnish/paint at regular intervals depending on sun/wind/rain for a house, this this is your responsibility, for an apartment, this should be done by the coownership. Make sure the right product is used as described in the DIU documents you have received.

The ten-year liability is a legal guarantee that must be paid by the manufacturer and covers the repair of the origin of certain damages for a period of 10 years starting for the date of the final delivery.

The guarantee applies to the first owner, but also to new buyers in the event of a resale.

The ten-year liability refers to shortcomings in the construction, and more particularly to serious defects that endanger the stability of the building; bearing walls that crack abnormally, significant problems with water infiltration, poor quality foundations, crumbling reinforced concrete, poor sealing of the roof are all examples of serious problems.

However, other matters relating to light infiltration (without affecting general stability), problems with the floor covering or problems with the removable cover cannot be considered as such.

Interior damages as a result of stability or water tightness problems is NOT covered in the 10-year guarantee. The guarantee only covers the direct repairs of the CAUSE for the problems. If you have damage to your paint, floors, ceilings furniture etc, you must claim this to the fire insurance of the building (so for apartments, you must ALWAYS contact the syndique to open a file with the insurance when you have damage).

The law of 9 July 1971, better know as the “Breyne law”, protects both the prospective builder and the prospective buyer of a house to be built or which is under construction against the risk of insolvency of the contracting party. To guarantee this protection, most legal provisions are required in such a way that they cannot be deviated from. The protection that the Breyne law offers lies mainly in the conclusion of a clear and complete contract. In particular, it guarantees the future owner:

  •  Complete and correct information
  •  A compulsory financial guarantee (which means that the work can be completed in the event of the manufacturer’s bankruptcy).
  •  A fixed total price, strict payment conditions and the limitation of down payments.
  •  Transparent lead times.
  •  A double mandatory receipt (see FAQ provisional delivery and final delivery).
  •  Strict liability rules (in particular to protect the buyer in the event of bankruptcy of the promoter’s subcontractors).
  •  An adequate sanction regime in case of non-compliance with the above procedures.

Consult the deed of sale.

See provisional delivery and final delivery for further explanation.

The provisional delivery of the building is a site visit where the builder and the buyer jointly note the completion of the work. This means that the building is habitable and ready for normal use. Subsequently, possible comments will be mentioned about matters (less important points that do not prevent the living area of the home) that still have to be made or adjusted. After the deed of purchase, the provisional acceptance usually entails acceptance of the works (excluding hidden defects) and then the handling over of the keys and the passing on of the energy meters. From this moment the apartment or house is at your disposal and you can continue with the move.

After the provisional delivery, we will proceed to complete any comments in the report of the provisional delivery. This as soon as possible.

Then we guarantee you the necessary repairs for hidden defects that would be in your building / house for a period that is traditionally set at one year.

In the course of the year following the provisional reception, the building will indeed be exposed to the climates of the four seasons and the use of sanitary equipment, kitchen, stove, etc…, this period will therefore reveal the potential problems.

The final delivery, traditionally one year after the provisional delivery, marks the end of our intervention on the site, and therefore also the completion of all comments about the provisional delivery and the resolution of the hidden defects that were reported in the past year. After the final delivery, you still benefit from the 10-year warranty. See the FAQ regarding the ten-year liability.

Note that the provisional and final delivery is organized according to the Breyne law, see the FAQ on this subject.

For sales outside the Breyne legislation, an inventory replaces the procedure in question. Consult the deed of sale.

If you no longer have hot water or heating, you can check the following,

  •  Check on the distribution board wither the fuses have not been switched off.
  •  For a gas boiler check whether the gas has not undergone a temporary interruption in the street. If in doubt about a possible leak, call the emergency numbers of your network operator directly (Ores, Fluvius, etc…).
  •  In case of an error message on the boiler, consult the manual to identify the error and the action to be taken.
  •  Operate the pressure valve. If the pressure is not between 1 and 2,5 bar, use the taps to add water or reduce the pressure.
  •  If the water is not hot enough, consult the manual to eventually increase the outlet temperatures. Note: this can be dangerous or damage the equipment. Consult a service technician if necessary.
  • If the K&W warranty period is still running, and the above points have not solved the problem, you can contact the boiler installer, or our company using the form below. afterwards, by transmitting the available information concerning your problem.
  •  Check whether all fuses in your electrical cabinet are still on. Re-enable everything if necessary.
  •  Check that the main circuit breaker has not failed. Re-enable if necessary.
  •  Check whether the problem is present everywhere in the building (in this case contact the syndic).
  •  If the problem also concerns other buildings in the street, contact your network operator (Ores, Fluvius, etc…).
  • If the K&W warranty period has expired, please contact your professional installer who will maintain your devices.
  •  Check whether all fuses are still switched on. Re-enable if necessary.
  •  If an error message appear on the device, consult the manual to identify the error and the action to be taken.
  •  Repeated odors or the appearance of mold may indicate a lack of ventilation. Open ventilation grilles and increase the extraction speed (system C) or increase the supply / extraction speed (system D). Note: The system is configured with sufficiently high flow rates during delivery.
  •  In case of repeated failure, unusual reactions or if the air is no longer blown or sucked in through the ventilation openings despite the set flow rates, it is possible that your ventilation system will experience a malfunction due to a lack of maintenance or aging. Contact your service technician.
  •  With a ventilation D system its advisable to clean the filters every 2 months and change them about once every year.
  • If the K&W warranty period has expired, please contact your professional installer who will maintain your devices.

The evacuations of the sinks are equipped with odor traps that can be opened and cleaned. If necessary, contact your sanitary technician for this minor regular maintenance. The frequency of this maintenance depends on the use. It is obviously necessary to avoid certain things from ending up in the there. Residual soap can ultimately also form blockage in the pipes. Bathtubs or showers have partial removable siphons to mainly remove the hair, etc… that can block the pipes. The frequency of the maintenance depends on the number of users (and the length of the hair).

The tubs or shower tubs are provided with partially removable siphons to mainly remove hair, etc … which can clog the pipes. The frequency of this maintenance depends on the number of users (and the length of the hair).

If in doubt about the procedure to be followed to dismantle and reassemble the siphons and other elements of the sanitary supply / drainage pipes, please refer to the technical documentation, or call a professional sanitarist. Improper installation of siphons and sterfputs can cause water leaks and damage to neighboring apartments!

There may be specialized drain cleaners on the market, contact the syndic in advance to check the type of product (ecological, not aggressive for the pipes, adapted for septic tank, etc…)

If the problem persists despite this initial intervention, or if the problem is found for several residents at the same time, contact the syndic for a check of the common facilities/pipes.

The syndicus will also ensure regular maintenance of the common pipes by specialized companies has been done accordingly.

It is completely normal, they are not missing, we cannot place thermostatic valves in this room (usually the living room) because the thermostat that controls the system is located here.


The thermostat measures the ambient temperature and detects a need for heating, it starts the boiler. In this situation, the radiators provide heat to each room depending on the opening of the thermostatic valve. When the desired temperature is reached, the boiler stops.

If the radiator valve of a radiator is completely closed, this radiator produces no heat and by consequence the room is not heated. That’s why installing thermostatic valves in every room is a problem. If you closed all the thermostatic valves on all radiators, the boiler runs in a a closed circuit and produces continuous heat without the radiators being able to heat any rooms. It is therefore necessary to fully open the radiator valves of the room where the thermostat is always located, the room serves as a reference for the thermostat. The other thermostatic valves can be more or less open depending on the desired heat.

The Zero Energy houses and apartments have been specially designed to take the greatest advantage of the prefabricated construction of timber frame construction (record construction times, optimal implementation), while maintaining maximum flexibility in the layout of the house. Thanks to the most innovative techniques (solar panels, heat pump, underfloor heating, ventilation group with heat recovery) the energy consumption costs of the house are covered by renewable energy sources. This total package ensure a “Zero Energy Home”.

The customizable apartments are also an innovative concept, they are designed to be easily adapted to a person with reduced mobility or another disability. An adaptable home is a home that adapts to the resident who must be able to move freely if, for example, his movement abilities decrease, etc… The home is designed so that the owner can choose to get the adaptable version. This means that the architecture is designed in such a way that only small or prepared adjustments are needed to transform the “normal” apartment into a home where a person with reduced mobility can live.

We have also demonstrated in quartier Heris that adaptable homes are no more expensive than standard homes, as long as they are integrated into the project early, because it affects the entire design of the building.

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