Kitchen plumbing in Belgium
Kitchen plumbing mostly plays out under the sink unit: hot and cold supply, the trap, the dishwasher branch and the tap above the worktop. A leak, a slow waste or a poor appliance branch shows there first, between pipes, trap and cabinet floor. Van Dijk Home diagnoses under the cabinet, repairs or adapts supply and waste, and makes a soft handoff to unblocking when grease or scraps clog further along.
- Final price given before we start
- Up to 2 years warranty on labour
- Emergency line available 24/7
- Direct phone contact: +32 2 000 00 00
Our approach
Kitchen plumbing with under-cabinet diagnosis
We start under the sink unit, separate supply leak from waste leak, repair trap or branch with focus, and give a soft referral to unblocking when grease sits further along the pipe.
- 01
Clear the zone and look under the cabinet
We ask for access to the sink unit and inspect supply, trap, dishwasher hose and tap flexible hoses. That first look separates a pressurised leak from a waste leak or condensation on cold pipes.
- 02
Name the cause and the fix
We tell you whether it is a seal, coupling, trap, tap or appliance branch, or a blockage that belongs with drainage. The proposed fix follows before we start dismantling or repair.
- 03
Repair supply, trap or branch
We replace worn seals, fit a correct trap or tee, and set supply and waste without stress or kinks. Valves stay reachable behind or under the run.
- 04
Test and hand over the cabinet
Supply goes back under pressure, the sink is flushed and the dishwasher branch is checked for leak or backflow. The zone stays dry and you know how to clean the trap later.
- 05
Handoff for grease or a deeper blockage
If the waste stays slow despite a clear trap, we schedule focused unblocking. Kitchen plumbing and drainage stay separate: water works here, pipe clearing there.
Common causes
Why kitchen pipes fail under the cabinet
Under the sink, flexible hoses, seals and a trap sit next to hot water, washing products and moving doors. Worn O-rings, over-tightened couplings or a trap hanging askew first leave a puddle on the cabinet floor.
A dishwasher or other appliance on a makeshift branch often leaks after the first cycle. Without a real shut-off or with a pinched waste hose, water finds its way under the unit.
Grease and food scraps slow the waste first in the trap, then further along the pipe. Soft handoff to drainage means: restore trap and connection here, clear the deeper blockage there, without mixing the two problems.
Related jobs
From sink fit to emergency under the kitchen
Not every kitchen job follows the same path. We match fitting, appliance, tap, leak repair or emergency to what we measure under the cabinet.
- Sink installation - bowl, tap and trap correctly on supply and waste
- Dishwasher connection - dedicated shut-off, inlet and trap branch
- Tap replacement - kitchen tap with pressure and tightness checks
- Leak repair - supply or waste leak under or behind the unit
- Emergency plumber - when water keeps running and damage is growing
Signals to watch
Spotting problems under the sink
These signs point to a kitchen plumbing job or a handoff to unblocking. The earlier you call, the more limited the damage under the cabinet stays.
- A puddle or damp patch on the cabinet floor under the sink.
- Dripping at a flex, tap base or trap coupling when the tap is open.
- The waste runs slow even after the trap was recently cleaned.
- Dishwasher or another appliance leaves water under the unit after a cycle.
- A musty smell or mould on the back of the sink cabinet.
- The water meter turns while no kitchen tap is open.
Until we arrive
What to do while you wait for the plumber
A few steps limit water damage under the cabinet and speed up diagnosis. Do not force couplings that already leak.
- 01
Close the shut-off under the sink
Turn the local valves off. If they stick, use the main stopcock so the puddle does not grow.
- 02
Catch the water and clear the cupboard
Place a bucket or cloths under the leak and remove cleaning products from the sink unit so we can work safely.
- 03
Switch off electricity near wet zones
If moisture is near a socket or the dishwasher, switch off the circuit involved. Do not touch wet electrical parts.
- 04
Describe leak, branch or slow drain
Say whether you see a puddle, whether an appliance just ran, or whether the sink empties slowly. That helps us bring the right materials.
Clear pricing
What determines the price
Our call-outs start from €63.60 incl. VAT (6 % for homes over 10 years old, otherwise 21 %).
Price depends on access under the cabinet, whether the fault is a seal, trap, tap or appliance branch, and whether a separate unblocking step is needed. Replacing a trap is not charged like moving a pipe run.
You get a price agreement after the on-site finding, before we start dismantling or repair. Call for a first indication, no obligation. Our line is available 24/7; planning follows depending on the area and availability.
Benefits
- Under-cabinet diagnosis: supply, trap, dishwasher branch and tap
- Reachable valves and trap after fitting or repair
- Soft handoff to unblocking when grease or a slow run sits further along
- Supply leak test and waste fall checked before handover
Equipment & techniques
FAQ
Frequently asked questions
Question not on the list? We answer it by phone, no obligation.
+32 2 000 00 00What does under-sink kitchen plumbing cost?
Our call-outs start from €63.60 incl. VAT (6 % for homes over 10 years old, otherwise 21 %). The final price depends on the cause (trap, fitting, flexible hose or waste pipe), access under the cabinet, the parts needed and the size of the repair.
Water is leaking under the sink. What should I do?
Close the valves under the unit or the main stopcock, catch the water and clear the cupboard. Call us with what you see: puddle at the trap, at a flex or after a dishwasher cycle. We locate the leak under the cabinet and repair with focus.
Can I have a dishwasher or other appliance branched onto the kitchen plumbing?
Yes, with a dedicated shut-off on the cold supply and a correct trap branch or standpipe. A makeshift tee without a valve often leaks under the unit. We fit or check the branch and test supply and waste before handover.
The sink drains slowly. Is that plumbing or unblocking?
We first check the trap, connections and dishwasher backflow. If that zone is clear but the pipe further along stays blocked by grease or scraps, a soft handoff to unblocking follows. You do not pay twice for the same problem.
Does the kitchen furniture need to be opened or moved?
Usually we work through the sink-unit doors. Only when pipes sit behind a fixed panel or are too tight is wider dismantling needed. We keep that opening limited to what diagnosis and repair require.
Do I get a warranty on the work?
Up to 2 years warranty on labour; parts carry the manufacturer’s warranty.
When should you call a plumber straight away?
Some signs are worth acting on straight away: a leak you cannot stop, water coming through a ceiling or a wall, a damp patch that keeps spreading, a sudden drop in pressure throughout the house, or water near a consumer unit or an electrical appliance. Close the main stop valve first: it limits the damage while the cause is being traced.
Present in Brussels, in Wallonia and in Flanders
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